计算机端口详解



计算机端口详解



一 摘要


端口是个网络应用中很重要的东西,相当于“门”了。

计算机“端口”是英文port的义译,可以认为是计算机与外界通讯交流的出口。其中硬件领域的端口又称接口,如:USB端口、串行端口等。软件领域的端口一般指网络中面向连接服务和无连接服务的通信协议端口,是一种抽象的软件结构,包括一些数据结构I/O(基本输入输出)缓冲区。

    可以先了解面向连接和无连接协议(Connection-Oriented and Connectionless Protocols) 
    面向连接服务的主要特点有:面向连接服务要经过三个阶段:数据传数前,先建立连接,连接建立后再传输数据,数据传送完后,释放连接。面向连接服务,可确保数据传送的次序和传输的可靠性。 
    无连接服务的特点是:无连接服务只有传输数据阶段。消除了除数据通信外的其它开销。只要发送实体是活跃的,无须接收实体也是活跃的。它的优点是灵活方便、迅速,特别适合于传送少量零星的报文,但无连接服务不能防止报文的丢失、重复或失序。

    区分“面向连接服务”和“无连接服务”的概念,特别简单、形象的例子是:打电话和写信。两个人如果要通电话,必须先建立连接——拨号,等待应答后才能相互传递信息,最后还要释放连接——挂电话。写信就没有那么复杂了,地址姓名填好以后直接往邮筒一扔,收信人就能收到。TCP/IP协议在网络层是无连接的(数据包只管往网上发,如何传输和到达以及是否到达由网络设备来管理)。而“端口”,是传输层的内容,是面向连接的。协议里面低于1024的端口都有确切的定义,它们对应着因特网上常见的一些服务。这些常见的服务可以划分为使用TCP端口(面向连接如打电话)和使用UDP端口(无连接如写信)两种。

    网络中可以被命名和寻址的通信端口是操作系统的一种可分配资源。由网络OSI(开放系统互联参考模型,Open System Interconnection Reference Model)七层协议可知,传输层与网络层最大的区别是传输层提供进程通信能力, 网络通信的最终地址不仅包括主机地址,还包括可描述进程的某种标识。所以TCP/IP协议提出的协议端口,可以认为是网络通信进程的一种标识符。 
 
    应用程序(调入内存运行后一般称为:进程)通过系统调用与某端口建立连接(binding,绑定)后,传输层传给该端口的数据都被相应的进程所接收,相应进程发给传输层的数据都从该端口输出。在TCP/IP协议的实现中,端口操作类似于一般的I/O操作,进程获取一个端口,相当于获取本地唯一的I/O文件,可以用一般的读写方式访问。 
 
    类似于文件描述符,每个端口都拥有一个叫端口号的整数描述符,用来区别不同的端口。由于TCP/IP传输层的TCP和UDP两个协议是两个完全独立的软件模块,因此各自的端口号也相互独立。如TCP有一个255号端口,UDP也可以有一个255号端口,两者并不冲突。 
 
    端口号有两种基本分配方式:第一种叫全局分配这是一种集中分配方式,由一个公认权威的*机构根据用户需要进行统一分配,并将结果公布于众,第二种是本地分配,又称动态连接,即进程需要访问传输层服务时,向本地操作系统提出申请,操作系统返回本地唯一的端口号,进程再通过合适的系统调用,将自己和该端口连接起来(binding,绑定)。TCP/IP端口号的分配综合了以上两种方式,将端口号分为两部分,少量的作为保留端口,以全局方式分配给服务进程。每一个标准服务器都拥有一个全局公认的端口叫周知口,即使在不同的机器上,其端口号也相同。剩余的为*端口,以本地方式进行分配。TCP和UDP规定,小于256的端口才能作为保留端口。

按端口号可分为3大类: 
(1)公认端口(Well Known Ports):从0到1023,它们紧密绑定(binding)于一些服务。通常这些端口的通讯明确表明了某种服务的协议。例如:80端口实际上总是HTTP通讯。  
(2)注册端口(Registered Ports):从1024到49151。它们松散地绑定于一些服务。也就是说有许多服务绑定于这些端口,这些端口同样用于许多其它目的。例如:许多系统处理动态端口从1024左右开始。  
(3)动态和/或私有端口(Dynamic and/or Private Ports):从49152到65535。理论上,不应为服务分配这些端口。实际上,机器通常从1024起分配动态端口。但也有例外:SUN的RPC端口从32768开始。

系统管理员可以“重定向”端口: 
    一种常见的技术是把一个端口重定向到另一个地址。例如默认的HTTP端口是80,不少人将它重定向到另一个端口,如8080。如果是这样改了,要访问本文就应改用这个地址http://wwd.3322.NET:8080/net/port.htm(当然,这仅仅是理论上的举例)。 
    实现重定向是为了隐藏公认的默认端口,降低受破坏率。这样如果有人要对一个公认的默认端口进行攻击则必须先进行端口扫描。大多数端口重定向与原端口有相似之处,例如多数HTTP端口由80变化而来:81,88,8000,8080,8888。同样POP的端口原来在110,也常被重定向到1100。也有不少情况是选取统计上有特别意义的数,象1234,23456,34567等。许多人有其它原因选择奇怪的数,42,69,666,31337。近来,越来越多的远程控制木马( Remote Access *s, RATs )采用相同的默认端口。如NetBus的默认端口是12345。Blake R. Swopes指出使用重定向端口还有一个原因,在UNIX系统上,如果你想侦听1024以下的端口需要有root权限。如果你没有root权限而又想开web服务,你就需要将其安装在较高的端口。此外,一些ISP的防火墙将阻挡低端口的通讯,这样的话即使你拥有整个机器你还是得重定向端口。


二 什么是端口


        在 Internet上,各主机间通过TCP/TP协议发送和接收数据报,各个数据报根据其目的主机的ip地址来进行互联网络中的路由选择。可见,把数据报顺 利的传送到目的主机是没有问题的。问题出在哪里呢?我们知道大多数操作系统都支持多程序(进程)同时运行,那么目的主机应该把接收到的数据报传送给众多同 时运行的进程中的哪一个呢?显然这个问题有待解决,端口机制便由此被引入进来。

  本地操作系统会给那些有需求的进程分配协议端口 (protocal port,即我们常说的端口),每个协议端口由一个正整数标识,如:80,139,445,等等。当目的主机接收到数据报后,将根据报文首部的目的端口 号,把数据发送到相应端口,而与此端口相对应的那个进程将会领取数据并等待下一组数据的到来。说到这里,端口的概念似乎仍然抽象,那么继续跟我来,别走 开。

  端口其实就是队,操作系统为各个进程分配了不同的队,数据报按照目的端口被推入相应的队中,等待被进程取用,在极特殊的情况下,这个队也是有可能溢出的,不过操作系统允许各进程指定和调整自己的队的大小。
不光接受数据报的进程需要开启它自己的端口,发送数据报的进程也需要开启端口,这样,数据报中将会标识有源端口,以便接受方能顺利的回传数据报到这个端口。


三 端口的分类

  在Internet上,按照协议类型分类,端口被分为TCP端口和UDP端口两类,虽然他们都用正整数标识,但这并不会引起歧义,比如TCP的80端口和UDP的80端口,因为数据报在标明端口的同时,还将标明端口的类型。 

  从端口的分配来看,端口被分为固定端口和动态端口两大类(一些教程还将极少被用到的高端口划分为第三类:私有端口):
  固定端口(0-1023):
   使用集中式管理机制,即服从一个管理机构对端口的指派,这个机构负责发布这些指派。由于这些端口紧绑于一些服务,所以我们会经常扫描这些端口来判断对方 是否开启了这些服务,如TCP的21(ftp),80(http),139(netbios),UDP的7(echo),69(tftp)等等一些大家熟 知的端口;
  动态端口(1024-49151):
  这些端口并不被固定捆绑某一服务,操作系统将这些端口动态的分配给各个进程, 同一进程两次分配有可能分配到不同的端口。不过一些应用程序并不愿意使用操作系统分配的动态端口,他们有其自己的‘商标性’端口,如oicq客户端的 4000端口,木马冰河的7626端口等都是固定而出名的。


四 端口在入侵中的作用

  有人曾经把服务器比作房子,而把端口比作通向不同房间(服务)的门,如果不考虑细节的话,这是一个不错的比喻。入侵者要占领这间房子,势必要破门而入(物理入侵另说),那么对于入侵者来说,了解房子开了几扇门,都是什么样的门,门后面有什么东西就显得至关重要。

   入侵者通常会用扫描器对目标主机的端口进行扫描,以确定哪些端口是开放的,从开放的端口,入侵者可以知道目标主机大致提供了哪些服务,进而猜测可能存在 的漏洞,因此对端口的扫描可以帮助我们更好的了解目标主机,而对于管理员,扫描本机的开放端口也是做好安全防范的第一步。


五 端口的相关工具

1 netstat -an 
  的确,这并不是一个工具,但他是查看自己所开放端口的最方便方法,在cmd中输入这个命令就可以了。如下:
C:/>netstat -an

Active Connections

Proto Local Address     Foreign Address    State
TCP  0.0.0.0:135      0.0.0.0:0       LISTENING
TCP  0.0.0.0:445      0.0.0.0:0       LISTENING
TCP  0.0.0.0:1025       0.0.0.0:0       LISTENING
TCP  0.0.0.0:1026       0.0.0.0:0       LISTENING
TCP  0.0.0.0:1028       0.0.0.0:0       LISTENING
TCP  0.0.0.0:3372       0.0.0.0:0       LISTENING
UDP  0.0.0.0:135      *:*
UDP  0.0.0.0:445      *:*
UDP  0.0.0.0:1027       *:*
UDP  127.0.0.1:1029     *:*
UDP  127.0.0.1:1030     *:*

  这是我没上网的时候机器所开的端口,两个135和445是固定端口,其余几个都是动态端口。

2 fport.exe和mport.exe 
  这也是两个命令行下查看本地机器开放端口的小程序,其实与netstat -an这个命令大同小异,只不过它能够显示打开端口的进程,信息更多一些而已,如果你怀疑自己的奇怪端口可能是木马,那就用他们查查吧。

3 activeport.exe(也称aports.exe)
  还是用来查看本地机器开放端口的东东,除了具有上面两个程序的全部功能外,他还有两个更吸引人之处:图形界面以及可以关闭端口。这对菜鸟来说是个绝对好用的东西,推荐使用喔。

4 superscan3.0
  它的大名你不会没听说过吧,纯端口扫描类软件中的NO.1,速度快而且可以指定扫描的端口,不多说了,绝对必备工具。

六 保护好自己的端口

  刚接触网络的朋友一般都对自己的端口很敏感,总怕自己的电脑开放了过多端口,更怕其中就有后门程序的端口,但由于对端口不是很熟悉,所以也没有解决办法,上起网来提心吊胆。其实保护自己的端口并不是那么难,只要做好下面几点就行了:

1) 查看:经常用命令或软件查看本地所开放的端口,看是否有可疑端口;

2) 判断:如果开放端口中有你不熟悉的,应该马上查找端口大全或木马常见端口等资料(网上多的很),看看里面对你那个可疑端口的作用描述,或者通过软件查看开启此端口的进程来进行判断;

3) 关闭:如果真是木马端口或者资料中没有这个端口的描述,那么应该关闭此端口,你可以用防火墙来屏蔽此端口,也可以用本地连接-TCP/IP-高级-选项-TCP/IP筛选,启用筛选机制来筛选端口;

  注意:判断时候要慎重,因为一些动态分配的端口也容易引起你多余的怀疑,这类端口一般比较低,且连续。还有,一些狡猾的后门软件,他们会借用80等一些常见端口来进行通信(穿透了防火墙),令人防不胜防,因此不轻易运行陌生程序才是关键。


常见端口表汇总


1 tcpmux TCP Port Service Multiplexer 传输控制协议端口服务多路开关选择器 
2 compressnet Management Utility     compressnet 管理实用程序 
3 compressnet Compression Process    压缩进程 
5 rje Remote Job Entry          远程作业登录 
7 echo Echo               回显 
9 discard Discard            丢弃 
11 systat Active Users          在线用户 
13 daytime Daytime            时间 
17 qotd Quote of the Day         每日引用 
18 msp Message Send Protocol       消息发送协议 
19 chargen Character Generator      字符发生器 
20 ftp-data File Transfer [Default Data] 文件传输协议(默认数据口)  
21 ftp File Transfer [Control]      文件传输协议(控制) 
22 ssh SSH Remote Login Protocol     SSH远程登录协议 
23 telnet Telnet             终端仿真协议 
24 ? any private mail system       预留给个人用邮件系统 
25 smtp Simple Mail Transfer       简单邮件发送协议 
27 nsw-fe NSW User System FE       NSW 用户系统现场工程师 
29 msg-icp MSG ICP            MSG ICP 
31 msg-auth MSG Authentication      MSG验证 
33 dsp Display Support Protocol     显示支持协议 
35 ? any private printer server     预留给个人打印机服务 
37 time Time               时间 
38 rap Route Access Protocol       路由访问协议 
39 rlp Resource Location Protocol    资源定位协议 
41 graphics Graphics           图形 
42 nameserver WINS Host Name Server   WINS 主机名服务 
43 nicname Who Is            "绰号" who is服务 
44 mpm-flags MPM FLAGS Protocol     MPM(消息处理模块)标志协议 
45 mpm Message Processing Module [recv] 消息处理模块  
46 mpm-snd MPM [default send]      消息处理模块(默认发送口) 
47 ni-ftp NI FTP             NI FTP 
48 auditd Digital Audit Daemon      数码音频后台服务  
49 tacacs Login Host Protocol (TACACS)  TACACS登录主机协议 
50 re-mail-ck Remote Mail Checking Protocol 远程邮件检查协议 
51 la-maint IMP Logical Address Maintenance IMP(接口信息处理机)逻辑地址维护 
52 xns-time XNS Time Protocol      施乐网络服务系统时间协议   
53 domain Domain Name Server       域名服务器 
54 xns-ch XNS Clearinghouse       施乐网络服务系统票据交换 
55 isi-gl ISI Graphics Language     ISI图形语言 
56 xns-auth XNS Authentication      施乐网络服务系统验证 
57 ? any private terminal access     预留个人用终端访问 
58 xns-mail XNS Mail           施乐网络服务系统邮件 
59 ? any private file service      预留个人文件服务 
60 ? Unassigned             未定义 
61 ni-mail NI MAIL            NI邮件? 
62 acas ACA Services           异步通讯适配器服务 
63 whois+ whois+              WHOIS+ 
64 covia Communications Integrator (CI) 通讯接口  
65 tacacs-ds TACACS-Database Service   TACACS数据库服务 
66 sql*net Oracle SQL*NET        Oracle SQL*NET 
67 bootps Bootstrap Protocol Server   引导程序协议服务端 
68 bootpc Bootstrap Protocol Client   引导程序协议客户端 
69 tftp Trivial File Transfer      小型文件传输协议 
70 gopher Gopher             信息检索协议 
71 netrjs-1 Remote Job Service      远程作业服务 
72 netrjs-2 Remote Job Service      远程作业服务 
73 netrjs-3 Remote Job Service      远程作业服务 
74 netrjs-4 Remote Job Service      远程作业服务 
75 ? any private dial out service    预留给个人拨出服务 
76 deos Distributed External Object Store 分布式外部对象存储  
77 ? any private RJE service      预留给个人远程作业输入服务 
78 vettcp vettcp             修正TCP? 
79 finger Finger             FINGER(查询远程主机在线用户等信息) 
80 http World Wide Web HTTP       全球信息网超文本传输协议 
81 hosts2-ns HOSTS2 Name Server     HOST2名称服务 
82 xfer XFER Utility           传输实用程序 
83 mit-ml-dev MIT ML Device       模块化智能终端ML设备 
84 ctf Common Trace Facility       公用追踪设备 
85 mit-ml-dev MIT ML Device       模块化智能终端ML设备 
86 mfcobol Micro Focus Cobol       Micro Focus Cobol编程语言 
87 ? any private terminal link      预留给个人终端连接 
88 kerberos Kerberos           Kerberros安全认证系统 
89 su-mit-tg SU/MIT Telnet Gateway    SU/MIT终端仿真网关 
90 dnsix DNSIX Securit Attribute Token Map DNSIX 安全属性标记图  
91 mit-dov MIT Dover Spooler       MIT Dover假脱机 
92 npp Network Printing Protocol     网络打印协议 
93 dcp Device Control Protocol      设备控制协议 
94 objcall Tivoli Object Dispatcher   Tivoli对象调度 
95 supdup SUPDUP             
96 dixie DIXIE Protocol Specification  DIXIE协议规范 
97 Swift-rvf Swift Remote Virtural File Protocol 快速远程虚拟文件协议  
98 tacnews TAC News           TAC(东京大学自动计算机?)新闻协议 
99 metagram Metagram Relay        

101/tcp hostname NIC Host Name Server 
102/tcp iso-tsap ISO-TSAP Class 0 
103/tcp gppitnp Genesis Point-to-Point Trans Net 
104/tcp acr-nema ACR-NEMA Digital Imag. & Comm. 300 
105/tcp cso CCSO name server protocol 
105/tcp csnet-ns Mailbox Name Nameserver 
106/tcp 3com-tsmux 3COM-TSMUX 
107/tcp rtelnet Remote Telnet Service 
108/tcp snagas SNA Gateway Access Server 
109/tcp pop2 Post Office Protocol - Version 2 
110/tcp pop3 Post Office Protocol - Version 3 
111/tcp sunrpc SUN Remote Procedure Call 
112/tcp mcidas McIDAS Data Transmission Protocol 
113/tcp ident 
114/tcp audionews Audio News Multicast 
115/tcp sftp Simple File Transfer Protocol 
116/tcp ansanotify ANSA REX Notify 
117/tcp uucp-path UUCP Path Service 
118/tcp sqlserv SQL Services 
119/tcp nntp Network News Transfer Protocol 
120/tcp cfdptkt CFDPTKT 
121/tcp erpc Encore Expedited Remote Pro.Call 
122/tcp smakynet SMAKYNET 
123/tcp ntp Network Time Protocol 
124/tcp ansatrader ANSA REX Trader 
125/tcp locus-map Locus PC-Interface Net Map Ser 
126/tcp unitary Unisys Unitary Login 
127/tcp locus-con Locus PC-Interface Conn Server 
128/tcp gss-xlicen GSS X License Verification 
129/tcp pwdgen Password Generator Protocol 
130/tcp cisco-fna cisco FNATIVE 
131/tcp cisco-tna cisco TNATIVE 
132/tcp cisco-sys cisco SYSMAINT 
133/tcp statsrv Statistics Service 
134/tcp ingres-net INGRES-NET Service 
135/tcp epmap DCE endpoint resolution 
136/tcp profile PROFILE Naming System 
137/tcp netbios-ns NETBIOS Name Service 
138/tcp netbios-dgm NETBIOS Datagram Service 
139/tcp netbios-ssn NETBIOS Session Service 
140/tcp emfis-data EMFIS Data Service 
141/tcp emfis-cntl EMFIS Control Service 
142/tcp bl-idm Britton-Lee IDM 
143/tcp imap Internet Message Access Protocol 
144/tcp uma Universal Management Architecture 
145/tcp uaac UAAC Protocol 
146/tcp iso-tp0 ISO-IP0 
147/tcp iso-ip ISO-IP 
148/tcp jargon Jargon 
149/tcp aed-512 AED 512 Emulation Service 
150/tcp sql-net SQL-NET 
151/tcp hems HEMS 
152/tcp bftp Background File Transfer Program 
153/tcp sgmp SGMP 
154/tcp netsc-prod NETSC 
155/tcp netsc-dev NETSC 
156/tcp sqlsrv SQL Service 
157/tcp knet-cmp KNET/VM Command/Message Protocol 
158/tcp pcmail-srv PCMail Server 
159/tcp nss-routing NSS-Routing 
160/tcp sgmp-traps SGMP-TRAPS 
161/tcp snmp SNMP 
162/tcp snmptrap SNMPTRAP 
163/tcp cmip-man CMIP/TCP Manager 
164/tcp cmip-agent CMIP/TCP Agent 
165/tcp xns-courier Xerox 
166/tcp s-net Sirius Systems 
167/tcp namp NAMP 
168/tcp rsvd RSVD 
169/tcp send SEND 
170/tcp print-srv Network PostScript 
171/tcp multiplex Network Innovations Multiplex 
172/tcp cl/1 Network Innovations CL/1 
173/tcp xyplex-mux Xyplex 
174/tcp mailq MAILQ 
175/tcp vmnet VMNET 
176/tcp genrad-mux GENRAD-MUX 
177/tcp xdmcp X Display Manager Control Protocol 
178/tcp nextstep NextStep Window Server 
179/tcp bgp Border Gateway Protocol 
180/tcp ris Intergraph 
181/tcp unify Unify 
182/tcp audit Unisys Audit SITP 
183/tcp ocbinder OCBinder 
184/tcp ocserver OCServer 
185/tcp remote-kis Remote-KIS 
186/tcp kis KIS Protocol 
187/tcp aci Application Communication Interface 
188/tcp mumps Plus Five‘s MUMPS 
189/tcp qft Queued File Transport 
190/tcp gacp Gateway Access Control Protocol 
191/tcp prospero Prospero Directory Service 
192/tcp osu-nms OSU Network Monitoring System 
193/tcp srmp Spider Remote Monitoring Protocol 
194/tcp irc Internet Relay Chat Protocol 
195/tcp dn6-nlm-aud DNSIX Network Level Module Audit 
196/tcp dn6-smm-red DNSIX Session Mgt Module Audit Redir 
197/tcp dls Directory Location Service 
198/tcp dls-mon Directory Location Service Monitor 
199/tcp smux SMUX 
200/tcp src IBM System Resource Controller 
201/tcp at-rtmp AppleTalk Routing Maintenance 
202/tcp at-nbp AppleTalk Name Binding 
203/tcp at-3 AppleTalk Unused 
204/tcp at-echo AppleTalk Echo 
205/tcp at-5 AppleTalk Unused 
206/tcp at-zis AppleTalk Zone Information 
207/tcp at-7 AppleTalk Unused 
208/tcp at-8 AppleTalk Unused 
209/tcp qmtp The Quick Mail Transfer Protocol 
210/tcp z39.50 ANSI Z39.50 
211/tcp 914c/g Texas Instruments 914C/G Terminal 
212/tcp anet ATEXSSTR 
214/tcp vmpwscs VM PWSCS 
215/tcp softpc Insignia Solutions 
216/tcp CAIlic Computer Associates Int‘l License Server 
217/tcp dbase dBASE Unix 
218/tcp mpp Netix Message Posting Protocol 
219/tcp uarps Unisys ARPs 
220/tcp imap3 Interactive Mail Access Protocol v3 
221/tcp fln-spx Berkeley rlogind with SPX auth 
222/tcp rsh-spx Berkeley rshd with SPX auth 
223/tcp cdc Certificate Distribution Center 
242/tcp direct Direct 
243/tcp sur-meas Survey Measurement 
244/tcp dayna Dayna 
245/tcp link LINK 
246/tcp dsp3270 Display Systems Protocol 
247/tcp subntbcst_tftp SUBNTBCST_TFTP 
248/tcp bhfhs bhfhs 
256/tcp rap RAP 
257/tcp set Secure Electronic Transaction 
258/tcp yak-chat Yak Winsock Personal Chat 
259/tcp esro-gen Efficient Short Remote Operations 
260/tcp openport Openport 
263/tcp hdap HDAP 
264/tcp bgmp BGMP 
280/tcp http-mgmt http-mgmt 
309/tcp entrusttime EntrustTime 
310/tcp bhmds bhmds 
312/tcp vslmp VSLMP 
315/tcp dpsi DPSI 
316/tcp decauth decAuth 
317/tcp zannet Zannet 
321/tcp pip PIP 
344/tcp pdap Prospero Data Access Protocol 
345/tcp pawserv Perf Analysis Workbench 
346/tcp zserv Zebra server 
347/tcp fatserv Fatmen Server 
348/tcp csi-sgwp Cabletron Management Protocol 
349/tcp mftp mftp 
351/tcp matip-type-b MATIP Type B 
351/tcp bhoetty bhoetty (added 5/21/97) 
353/tcp ndsauth NDSAUTH 
354/tcp bh611 bh611 
357/tcp bhevent bhevent 
362/tcp srssend SRS Send 
365/tcp dtk DTK 
366/tcp odmr ODMR 
368/tcp qbikgdp QbikGDP 
371/tcp clearcase Clearcase 
372/tcp ulistproc ListProcessor 
373/tcp legent-1 Legent Corporation 
374/tcp legent-2 

374/tcp legent-2 Legent Corporation 
375/tcp hassle Hassle 
376/tcp nip Amiga Envoy Network Inquiry Proto 
377/tcp tnETOS NEC Corporation 
378/tcp dsETOS NEC Corporation 
379/tcp is99c TIA/EIA/IS-99 modem client 
380/tcp is99s TIA/EIA/IS-99 modem server 
381/tcp hp-collector hp performance data collector 
383/tcp hp-alarm-mgr hp performance data alarm manager 
384/tcp arns A Remote Network Server System 
385/tcp ibm-app IBM Application 
386/tcp asa ASA Message Router Object Def. 
387/tcp aurp Appletalk Update-Based Routing Pro. 
388/tcp unidata-ldm Unidata LDM Version 4 
389/tcp ldap Lightweight Directory Access Protocol 
390/tcp uis UIS 
391/tcp synotics-relay SynOptics SNMP Relay Port 
393/tcp dis Data Interpretation System 
394/tcp embl-ndt EMBL Nucleic Data Transfer 
395/tcp netcp NETscout Control Protocol 
396/tcp netware-ip Novell Netware over IP 
397/tcp mptn Multi Protocol Trans. Net. 
398/tcp kryptolan Kryptolan 
399/tcp iso-tsap-c2 ISO Transport Class 2 Non-Control over TCP 
400/tcp work-sol Workstation Solutions 
401/tcp ups Uninterruptible Power Supply 
402/tcp genie Genie Protocol 
403/tcp decap decap 
404/tcp nced nced 
405/tcp ncld ncld 
406/tcp imsp Interactive Mail Support Protocol 
407/tcp timbuktu Timbuktu 
408/tcp prm-sm Prospero Resource Manager Sys. Man. 
409/tcp prm-nm Prospero Resource Manager Node Man. 
410/tcp decladebug DECLadebug Remote Debug Protocol 
411/tcp rmt Remote MT Protocol 
412/tcp synoptics-trap Trap Convention Port 
413/tcp smsp SMSP 
414/tcp infoseek InfoSeek 
415/tcp bnet BNet 
416/tcp silverplatter Silverplatter 
417/tcp onmux Onmux 
418/tcp hyper-g Hyper-G 
419/tcp ariel1 Ariel 
420/tcp smpte SMPTE 
421/tcp ariel2 Ariel 
422/tcp ariel3 Ariel 
423/tcp opc-job-start IBM Operations Planning and Control Start 
424/tcp opc-job-track IBM Operations Planning and Control Track 
425/tcp icad-el ICAD 
426/tcp smartsdp smartsdp 
427/tcp svrloc Server Location 
428/tcp ocs_cmu OCS_CMU 
429/tcp ocs_amu OCS_AMU 
430/tcp utmpsd UTMPSD 
431/tcp utmpcd UTMPCD 
432/tcp iasd IASD 
433/tcp nnsp NNSP 
434/tcp mobileip-agent MobileIP-Agent 
435/tcp mobilip-mn MobilIP-MN 
436/tcp dna-cml DNA-CML 
437/tcp comscm comscm 
438/tcp dsfgw dsfgw 
439/tcp dasp dasp Thomas Obermair 
440/tcp sgcp sgcp 
441/tcp decvms-sysmgt decvms-sysmgt 
442/tcp cvc_hostd cvc_hostd 
443/tcp https http protocol over TLS/SSL 
444/tcp snpp Simple Network Paging Protocol 
445/tcp microsoft-ds Microsoft-DS 
446/tcp ddm-rdb DDM-RDB 
447/tcp ddm-dfm DDM-RFM 
448/tcp ddm-ssl DDM-SSL 
449/tcp as-servermap AS Server Mapper 
450/tcp tserver TServer 
451/tcp sfs-smp-net Cray Network Semaphore server 
453/tcp creativeserver CreativeServer 
454/tcp contentserver ContentServer 
455/tcp creativepartnr CreativePartnr 
456/tcp macon-tcp macon-tcp 
457/tcp scohelp scohelp 
458/tcp appleqtc apple quick time 
459/tcp ampr-rcmd ampr-rcmd 
460/tcp skronk skronk 
461/tcp datasurfsrv DataRampSrv 
462/tcp datasurfsrvsec DataRampSrvSec 
463/tcp alpes alpes 
464/tcp kpasswd kpasswd 
465/tcp smtps smtp protocol over TLS/SSL (was ssmtp) 
466/tcp digital-vrc digital-vrc 
467/tcp mylex-mapd mylex-mapd 
468/tcp photuris proturis 
469/tcp rcp Radio Control Protocol 
470/tcp scx-proxy scx-proxy 
471/tcp mondex Mondex 
472/tcp ljk-login ljk-login 
473/tcp hybrid-pop hybrid-pop 
474/tcp tn-tl-w1 tn-tl-w1 
475/tcp tcpnethaspsrv tcpnethaspsrv 
476/tcp tn-tl-fd1 tn-tl-fd1 
477/tcp ss7ns ss7ns 
478/tcp spsc spsc 
479/tcp iafserver iafserver 
480/tcp iafdbase iafdbase 
481/tcp ph Ph service 
482/tcp bgs-nsi bgs-nsi 
483/tcp ulpnet ulpnet 
484/tcp integra-sme Integra Software Management Environment 
485/tcp powerburst Air Soft Power Burst 
486/tcp avian avian 
487/tcp saft saft Simple Asynchronous File Transfer 
488/tcp gss-http gss-http 
489/tcp nest-protocol nest-protocol 
490/tcp micom-pfs micom-pfs 
491/tcp Go-login go-login 
492/tcp ticf-1 Transport Independent Convergence for FNA 
493/tcp ticf-2 Transport Independent Convergence for FNA 
494/tcp pov-ray POV-Ray 
495/tcp intecourier intecourier 
496/tcp pim-rp-disc PIM-RP-DISC 
497/tcp dantz dantz 
498/tcp siam siam 
499/tcp iso-ill ISO ILL Protocol 
500/tcp isakmp isakmp 
501/tcp stmf STMF 
502/tcp asa-appl-proto asa-appl-proto 
503/tcp intrinsa Intrinsa 
504/tcp citadel citadel 
505/tcp mailbox-lm mailbox-lm 
506/tcp ohimsrv ohimsrv 
507/tcp crs crs 
508/tcp xvttp xvttp 
509/tcp snare snare 
510/tcp fcp FirstClass Protocol 
511/tcp passgo PassGo 
512/tcp exec remote process execution; 
513/tcp login remote login a la telnet; 
514/tcp shell cmd 
515/tcp printer spooler 
516/tcp videotex videotex 
517/tcp talk like tenex link, but across 
518/tcp ntalk 
519/tcp utime unixtime 
520/tcp efs extended file name server 
521/tcp ripng ripng 
522/tcp ulp ULP 
523/tcp ibm-db2 IBM-DB2 
524/tcp ncp NCP 
525/tcp timed timeserver 
526/tcp tempo newdate 
527/tcp stx Stock IXChange 
528/tcp custix Customer IXChange 
529/tcp irc-serv IRC-SERV 
530/tcp courier rpc 
531/tcp conference chat 
532/tcp netnews readnews 
533/tcp netwall for emergency broadcasts 
534/tcp mm-admin MegaMedia Admin 
535/tcp iiop iiop 
536/tcp opalis-rdv opalis-rdv 
537/tcp nmsp Networked Media Streaming Protocol 
538/tcp gdomap gdomap 
539/tcp apertus-ldp Apertus Technologies Load Determination 
540/tcp uucp uucpd 
541/tcp uucp-rlogin uucp-rlogin 
542/tcp commerce commerce 
543/tcp klogin 
544/tcp kshell krcmd 
545/tcp appleqtcsrvr appleqtcsrvr 
546/tcp dhcpv6-client DHCPv6 Client 
547/tcp dhcpv6-server DHCPv6 Server 
548/tcp afpovertcp AFP over TCP 
549/tcp idfp IDFP 
550/tcp new-rwho new-who 
551/tcp cybercash cybercash 
552/tcp deviceshare deviceshare 
553/tcp pirp pirp 
554/tcp rtsp Real Time Stream Control Protocol 
555/tcp dsf 
556/tcp remotefs rfs server 
557/tcp openvms-sysipc openvms-sysipc 
558/tcp sdnskmp SDNSKMP 
559/tcp teedtap TEEDTAP 
560/tcp rmonitor rmonitord 
561/tcp monitor 
562/tcp chshell chcmd 
563/tcp nntps nntp protocol over TLS/SSL (was snntp) 
564/tcp 9pfs plan 9 file service 
565/tcp whoami whoami 
566/tcp streettalk streettalk 
567/tcp banyan-rpc banyan-rpc 
568/tcp ms-shuttle microsoft shuttle 
569/tcp ms-rome microsoft rome 
570/tcp meter demon 
571/tcp meter udemon 
572/tcp sonar sonar 
573/tcp banyan-vip banyan-vip 
574/tcp ftp-agent FTP Software Agent System 
575/tcp vemmi VEMMI 
576/tcp ipcd ipcd 
577/tcp vnas vnas 
578/tcp ipdd ipdd 
579/tcp decbsrv decbsrv 
581/tcp bdp Bundle Discovery Protocol 
588/tcp cal CAL 
589/tcp eyelink EyeLink 
590/tcp tns-cml TNS CML 
593/tcp http-rpc-epmap HTTP RPC Ep Map 
594/tcp tpip TPIP 
596/tcp smsd SMSD 
599/tcp acp Aeolon Core Protocol 
600/tcp ipcserver Sun IPC server 
606/tcp urm Cray Unified Resource Manager 
607/tcp nqs nqs 
608/tcp sift-uft Sender-Initiated/Unsolicited File Transfer 
609/tcp npmp-trap npmp-trap 
610/tcp npmp-local npmp-local 
611/tcp npmp-gui npmp-gui 
613/tcp hmmp-op HMMP Operation 
620/tcp sco-websrvrmgr SCO WebServer Manager 
621/tcp escp-ip ESCP 
625/tcp dec_dlm DEC DLM 
626/tcp asia ASIA 
628/tcp qmqp QMQP 
630/tcp rda RDA 
631/tcp ipp IPP (Internet Printing Protocol) 
632/tcp bmpp bmpp 
634/tcp ginad ginad 
635/tcp rlzdbase RLZ DBase 
636/tcp ldaps ldap protocol over TLS/SSL (was sldap) 
637/tcp lanserver lanserver 
639/tcp msdp MSDP 
666/tcp doom doom Id Software 
667/tcp disclose campaign contribution disclosures - SDR Technologies 
668/tcp mecomm MeComm 
669/tcp meregister MeRegister 
670/tcp vacdsm-sws VACDSM-SWS 
671/tcp vacdsm-app VACDSM-APP 
672/tcp vpps-qua VPPS-QUA 
673/tcp cimplex CIMPLEX 
674/tcp acap ACAP 
675/tcp dctp DCTP 
704/tcp elcsd errlog copy/server daemon 
705/tcp agentx AgentX 
709/tcp entrust-kmsh Entrust Key Management Service Handler 
710/tcp entrust-ash Entrust Administration Service Handler 
729/tcp netviewdm1 IBM NetView DM/6000 Server/Client 
730/tcp netviewdm2 IBM NetView DM/6000 send/tcp 
731/tcp netviewdm3 IBM NetView DM/6000 receive/tcp 
741/tcp netgw netGW 
742/tcp netrcs Network based Rev. Cont. Sys. 
744/tcp flexlm Flexible License Manager 
747/tcp fujitsu-dev Fujitsu Device Control 
748/tcp ris-cm Russell Info Sci Calendar Manager 
749/tcp kerberos-adm kerberos administration 
750/tcp rfile 
751/tcp pump 
752/tcp qrh 
753/tcp rrh 
754/tcp tell send 
758/tcp nlogin 
759/tcp con 
760/tcp ns 
761/tcp rxe 
762/tcp quotad 
763/tcp cycleserv 
764/tcp omserv 
765/tcp webster 
769/tcp vid 
770/tcp cadlock 
771/tcp rtip 
772/tcp cycleserv2 
773/tcp submit 
774/tcp rpasswd 
776/tcp wpages 
780/tcp wpgs 
786/tcp concert Concert 
787/tcp qsc QSC 
801/tcp device 
873/tcp rsync rsync 
886/tcp iclcnet-locate ICL coNETion locate server 
887/tcp iclcnet_svinfo ICL coNETion server info 
888/tcp accessbuilder AccessBuilder 
900/tcp omginitialrefs OMG Initial Refs 
911/tcp xact-backup xact-backup 
990/tcp ftps ftp protocol, control, over TLS/SSL 
991/tcp nas Netnews Administration System 
992/tcp telnets telnet protocol over TLS/SSL 
993/tcp imaps imap4 protocol over TLS/SSL 
994/tcp ircs irc protocol over TLS/SSL 
995/tcp pop3s pop3 protocol over TLS/SSL (was spop3) 
996/tcp vsinet vsinet 
997/tcp maitrd 
998/tcp busboy 
999/tcp garcon 
1000/tcp cadlock 
1010/tcp surf surf 
1023/tcp Reserved Reserved 
1030/tcp iad1 BBN IAD 
1031/tcp iad2 BBN IAD 
1032/tcp iad3 BBN IAD 
1047/tcp neod1 Sun‘s NEO Object Request Broker 
1048/tcp neod2 Sun‘s NEO Object Request Broker 
1058/tcp nim nim 
1059/tcp nimreg nimreg 
1067/tcp instl_boots Installation Bootstrap Proto. Serv. 
1068/tcp instl_bootc Installation Bootstrap Proto. Cli. 
1080/tcp socks Socks 
1083/tcp ansoft-lm-1 Anasoft License Manager 
1084/tcp ansoft-lm-2 Anasoft License Manager 
1123/tcp murray Murray 
1155/tcp nfa Network File Access 
1212/tcp lupa lupa 
1222/tcp nerv SNI R&D network 
1239/tcp nmsd NMSD 
1248/tcp hermes 
1313/tcp bmc_patroldb BMC_PATROLDB 
1314/tcp pdps Photoscript Distributed Printing System 
1321/tcp pip PIP 
1345/tcp vpjp VPJP 
1346/tcp alta-ana-lm Alta Analytics License Manager 
1347/tcp bbn-mmc multi media conferencing 
1348/tcp bbn-mmx multi media conferencing 
1349/tcp sbook Registration Network Protocol 
1350/tcp editbench Registration Network Protocol 
1352/tcp lotusnote Lotus Note 
1353/tcp relief Relief Consulting 
1354/tcp rightbrain RightBrain Software 
1355/tcp intuitive-edge Intuitive Edge 
1356/tcp cuillamartin CuillaMartin Company 
1357/tcp pegboard Electronic PegBoard 
1358/tcp connlcli CONNLCLI 
1359/tcp ftsrv FTSRV 
1360/tcp mimer MIMER 
1361/tcp linx LinX 
1362/tcp timeflies TimeFlies 
1363/tcp ndm-requester Network DataMover Requester 
1364/tcp ndm-server Network DataMover Server 
1365/tcp adapt-sna Network Software Associates 
1366/tcp netware-csp Novell NetWare Comm Service Platform 
1367/tcp dcs DCS 
1368/tcp screencast ScreenCast 
1369/tcp gv-us GlobalView to Unix Shell 
1370/tcp us-gv Unix Shell to GlobalView 
1371/tcp fc-cli Fujitsu Config Protocol 
1372/tcp fc-ser Fujitsu Config Protocol 
1373/tcp chromagrafx Chromagrafx 
1374/tcp molly EPI Software Systems 
1375/tcp bytex Bytex 
1376/tcp ibm-pps IBM Person to Person Software 
1377/tcp cichlid Cichlid License Manager 
1378/tcp elan Elan License Manager 
1379/tcp dbreporter Integrity Solutions 
1380/tcp telesis-licman Telesis Network License Manager 
1381/tcp apple-licman Apple Network License Manager 
1382/tcp udt_os 
1383/tcp gwha GW Hannaway Network License Manager 
1384/tcp os-licman Objective Solutions License Manager 
1385/tcp atex_elmd Atex Publishing License Manager 
1386/tcp checksum CheckSum License Manager 
1387/tcp cadsi-lm Computer Aided Design Software Inc LM 
1388/tcp objective-dbc Objective Solutions DataBase Cache 
1389/tcp iclpv-dm Document Manager 
1390/tcp iclpv-sc Storage Controller 
1391/tcp iclpv-sas Storage Access Server 
1392/tcp iclpv-pm Print Manager 
1393/tcp iclpv-nls Network Log Server 
1394/tcp iclpv-nlc Network Log Client 
1395/tcp iclpv-wsm PC Workstation Manager software 
1396/tcp dvl-activemail DVL Active Mail 
1399/tcp cadkey-licman Cadkey License Manager 
1400/tcp cadkey-tablet Cadkey Tablet Daemon 
1402/tcp prm-sm-np Prospero Resource Manager 
1403/tcp prm-nm-np Prospero Resource Manager 
1404/tcp igi-lm Infinite Graphics License Manager 
1405/tcp ibm-res IBM Remote Execution Starter 
1406/tcp netlabs-lm NetLabs License Manager 
1407/tcp dbsa-lm DBSA License Manager 
1408/tcp sophia-lm Sophia License Manager 
1409/tcp here-lm Here License Manager 
1410/tcp hiq HiQ License Manager 
1411/tcp af AudioFile 
1412/tcp innosys InnoSys 
1413/tcp innosys-acl Innosys-ACL 
1414/tcp ibm-mqseries IBM MQSeries 
1415/tcp dbstar DBStar 
1416/tcp novell-lu6.2 Novell LU6.2 
1417/tcp timbuktu-srv1 Timbuktu Service 1 Port 
1418/tcp timbuktu-srv2 Timbuktu Service 2 Port 
1419/tcp timbuktu-srv3 Timbuktu Service 3 Port 
1420/tcp timbuktu-srv4 Timbuktu Service 4 Port 
1421/tcp gandalf-lm Gandalf License Manager 
1422/tcp autodesk-lm Autodesk License Manager 
1423/tcp essbase Essbase Arbor Software 
1424/tcp hybrid Hybrid Encryption Protocol 
1425/tcp zion-lm Zion Software License Manager 
1426/tcp sais Satellite-data Acquisition System 1 
1427/tcp mloadd mloadd monitoring tool 
1428/tcp informatik-lm Informatik License Manager 
1429/tcp nms Hypercom NMS 
1430/tcp tpdu Hypercom TPDU 
1431/tcp rgtp Reverse Gossip Transport 
1432/tcp blueberry-lm Blueberry Software License Manager 
1433/tcp ms-sql-s Microsoft-SQL-Server 
1434/tcp ms-sql-m Microsoft-SQL-Monitor 
1435/tcp ibm-cics IBM CICS 
1436/tcp saism Satellite-data Acquisition System 2 
1437/tcp tabula Tabula 
1438/tcp eicon-server Eicon Security Agent/Server 
1439/tcp eicon-x25 Eicon X25/SNA Gateway 
1440/tcp eicon-slp Eicon Service Location Protocol 
1441/tcp cadis-1 Cadis License Management 
1442/tcp cadis-2 Cadis License Management 
1443/tcp ies-lm Integrated Engineering Software 
1444/tcp marcam-lm Marcam License Management 
1445/tcp proxima-lm Proxima License Manager 
1446/tcp ora-lm Optical Research Associates License Manager 
1447/tcp apri-lm Applied Parallel Research LM 
1448/tcp oc-lm OpenConnect License Manager 
1449/tcp peport PEport 
1450/tcp dwf Tandem Distributed Workbench Facility 
1451/tcp infoman IBM Information Management 
1452/tcp gtegsc-lm GTE Government Systems License Man 
1453/tcp genie-lm Genie License Manager 
1454/tcp interhdl_elmd interHDL License Manager 
1455/tcp esl-lm ESL License Manager 
1456/tcp dca DCA 
1457/tcp valisys-lm Valisys License Manager 
1458/tcp nrcabq-lm Nichols Research Corp. 
1459/tcp proshare1 Proshare Notebook Application 
1460/tcp proshare2 Proshare Notebook Application 
1461/tcp ibm_wrless_lan IBM Wireless LAN 
1462/tcp world-lm World License Manager 
1463/tcp nucleus Nucleus 
1464/tcp msl_lmd MSL License Manager 
1465/tcp pipes Pipes Platform 
1466/tcp oceansoft-lm Ocean Software License Manager 
1467/tcp csdmbase CSDMBASE 
1468/tcp csdm CSDM 
1469/tcp aal-lm Active Analysis Limited License Manager 
1470/tcp uaiact Universal Analytics 
1471/tcp csdmbase csdmbase 
1472/tcp csdm csdm 
1473/tcp openmath OpenMath 
1474/tcp telefinder Telefinder 
1475/tcp taligent-lm Taligent License Manager 
1476/tcp clvm-cfg clvm-cfg 
1477/tcp ms-sna-server ms-sna-server 
1478/tcp ms-sna-base ms-sna-base 
1479/tcp dberegister dberegister 
1480/tcp pacerforum PacerForum 
1481/tcp airs AIRS 
1482/tcp miteksys-lm Miteksys License Manager 
1483/tcp afs AFS License Manager 
1484/tcp confluent Confluent License Manager 
1485/tcp lansource LANSource 
1486/tcp nms_topo_serv nms_topo_serv 
1487/tcp localinfosrvr LocalInfoSrvr 
1488/tcp docstor DocStor 
1489/tcp dmdocbroker dmdocbroker 
1490/tcp insitu-conf insitu-conf 
1491/tcp anynetgateway anynetgateway 
1492/tcp stone-design-1 stone-design-1 
1493/tcp netmap_lm netmap_lm 
1494/tcp ica ica 
1495/tcp cvc cvc 
1496/tcp liberty-lm liberty-lm 
1497/tcp rfx-lm rfx-lm 
1498/tcp sybase-sqlany Sybase SQL Any 
1499/tcp fhc Federico Heinz Consultora 
1500/tcp vlsi-lm VLSI License Manager 
1501/tcp saiscm Satellite-data Acquisition System 3 
1502/tcp shivadiscovery Shiva 
1503/tcp imtc-mcs Databeam 
1504/tcp evb-elm EVB Software Engineering License Manager 
1505/tcp funkproxy Funk Software, Inc. 
1506/tcp utcd Universal Time daemon (utcd) 
1507/tcp symplex symplex 
1508/tcp diagmond diagmond 
1509/tcp robcad-lm Robcad, Ltd. License Manager 
1510/tcp mvx-lm Midland Valley Exploration Ltd. Lic. Man. 
1511/tcp 3l-l1 3l-l1 
1512/tcp wins Microsoft‘s Windows Internet Name Service 
1513/tcp fujitsu-dtc Fujitsu Systems Business of America, Inc 
1514/tcp fujitsu-dtcns Fujitsu Systems Business of America, Inc 
1515/tcp ifor-protocol ifor-protocol 
1516/tcp vpad Virtual Places Audio data 
1517/tcp vpac Virtual Places Audio control 
1518/tcp vpvd Virtual Places Video data 
1519/tcp vpvc Virtual Places Video control 
1520/tcp atm-zip-office atm zip office 
1521/tcp ncube-lm nCube License Manager 
1522/tcp ricardo-lm Ricardo North America License Manager 
1523/tcp cichild-lm cichild 
1525/tcp orasrv oracle 
1525/tcp prospero-np Prospero Directory Service non-priv 
1526/tcp pdap-np Prospero Data Access Prot non-priv 
1527/tcp tlisrv oracle 
1528/tcp mciautoreg micautoreg 
1529/tcp coauthor oracle 
1530/tcp rap-service rap-service 
1531/tcp rap-listen rap-listen 
1532/tcp miroconnect miroconnect 
1533/tcp virtual-places Virtual Places Software 
1534/tcp micromuse-lm micromuse-lm 
1535/tcp ampr-info ampr-info 
1536/tcp ampr-inter ampr-inter 
1537/tcp sdsc-lm isi-lm 
1538/tcp 3ds-lm 3ds-lm 
1539/tcp intellistor-lm Intellistor License Manager 
1540/tcp rds rds 
1541/tcp rds2 rds2 
1542/tcp gridgen-elmd gridgen-elmd 
1543/tcp simba-cs simba-cs 
1544/tcp aspeclmd aspeclmd 
1545/tcp vistium-share vistium-share 
1546/tcp abbaccuray abbaccuray 
1547/tcp laplink laplink 
1548/tcp axon-lm Axon License Manager 
1549/tcp shivahose Shiva Hose 
1550/tcp 3m-image-lm Image Storage license manager 3M Company 
1551/tcp hecmtl-db HECMTL-DB 
1552/tcp pciarray pciarray 
1553/tcp sna-cs sna-cs 
1554/tcp caci-lm CACI Products Company License Manager 
1555/tcp livelan livelan 
1556/tcp ashwin AshWin CI Tecnologies 
1557/tcp arbortext-lm ArborText License Manager 
1558/tcp xingmpeg xingmpeg 
1559/tcp web2host web2host 
1560/tcp asci-val asci-val 
1561/tcp facilityview facilityview 
1562/tcp pconnectmgr pconnectmgr 
1563/tcp cadabra-lm Cadabra License Manager 
1564/tcp pay-per-view Pay-Per-View 
1565/tcp winddlb WinDD 
1566/tcp corelvideo CORELVIDEO 
1567/tcp jlicelmd jlicelmd 
1568/tcp tsspmap tsspmap 
1569/tcp ets ets 
1570/tcp orbixd orbixd 
1571/tcp rdb-dbs-disp Oracle Remote Data Base 
1572/tcp chip-lm Chipcom License Manager 
1573/tcp itscomm-ns itscomm-ns 
1574/tcp mvel-lm mvel-lm 
1575/tcp oraclenames oraclenames 
1576/tcp moldflow-lm moldflow-lm 
1577/tcp hypercube-lm hypercube-lm 
1578/tcp jacobus-lm Jacobus License Manager 
1579/tcp ioc-sea-lm ioc-sea-lm 
1580/tcp tn-tl-r1 tn-tl-r1 
1581/tcp mil-2045-47001 MIL-2045-47001 
1582/tcp msims MSIMS 
1583/tcp simbaexpress simbaexpress 
1584/tcp tn-tl-fd2 tn-tl-fd2 
1585/tcp intv intv 
1586/tcp ibm-abtact ibm-abtact 
1587/tcp pra_elmd pra_elmd 
1588/tcp triquest-lm triquest-lm 
1589/tcp vqp VQP 
1590/tcp gemini-lm gemini-lm 
1591/tcp ncpm-pm ncpm-pm 
1592/tcp commonspace commonspace 
1593/tcp mainsoft-lm mainsoft-lm 
1594/tcp sixtrak sixtrak 
1595/tcp radio radio 
1596/tcp radio-sm radio-sm 
1597/tcp orbplus-iiop orbplus-iiop 
1598/tcp picknfs picknfs 
1599/tcp simbaservices simbaservices 
1600/tcp issd 
1601/tcp aas aas 
1602/tcp inspect inspect 
1603/tcp picodbc pickodbc 
1604/tcp icabrowser icabrowser 
1605/tcp slp Salutation Manager (Salutation Protocol) 
1606/tcp slm-api Salutation Manager (SLM-API) 
1607/tcp stt stt 
1608/tcp smart-lm Smart Corp. License Manager 
1609/tcp isysg-lm isysg-lm 
1610/tcp taurus-wh taurus-wh 
1611/tcp ill Inter Library Loan 
1612/tcp netbill-trans NetBill Transaction Server 
1613/tcp netbill-keyrep NetBill Key Repository 
1614/tcp netbill-cred NetBill Credential Server 
1615/tcp netbill-auth NetBill Authorization Server 
1616/tcp netbill-prod NetBill Product Server 
1617/tcp nimrod-agent Nimrod Inter-Agent Communication 
1618/tcp skytelnet skytelnet 
1619/tcp xs-openstorage xs-openstorage 
1620/tcp faxportwinport faxportwinport 
1621/tcp softdataphone softdataphone 
1622/tcp ontime ontime 
1623/tcp jaleosnd jaleosnd 
1624/tcp udp-sr-port udp-sr-port 
1625/tcp svs-omagent svs-omagent 
1636/tcp cncp CableNet Control Protocol 
1637/tcp cnap CableNet Admin Protocol 
1638/tcp cnip CableNet Info Protocol 
1639/tcp cert-initiator cert-initiator 
1640/tcp cert-responder cert-responder 
1641/tcp invision InVision 
1642/tcp isis-am isis-am 
1643/tcp isis-ambc isis-ambc 
1645/tcp datametrics datametrics 
1646/tcp sa-msg-port sa-msg-port 
1647/tcp rsap rsap 
1648/tcp concurrent-lm concurrent-lm 
1649/tcp inspect inspect 
1650/tcp nkd nkd 
1651/tcp shiva_confsrvr shiva_confsrvr 
1652/tcp xnmp xnmp 
1653/tcp alphatech-lm alphatech-lm 
1654/tcp stargatealerts stargatealerts 
1655/tcp dec-mbadmin dec-mbadmin 
1656/tcp dec-mbadmin-h dec-mbadmin-h 
1657/tcp fujitsu-mmpdc fujitsu-mmpdc 
1658/tcp sixnetudr sixnetudr 
1659/tcp sg-lm Silicon Grail License Manager 
1660/tcp skip-mc-gikreq skip-mc-gikreq 
1661/tcp netview-aix-1 netview-aix-1 
1662/tcp netview-aix-2 netview-aix-2 
1663/tcp netview-aix-3 netview-aix-3 
1664/tcp netview-aix-4 netview-aix-4 
1665/tcp netview-aix-5 netview-aix-5 
1666/tcp netview-aix-6 netview-aix-6 
1667/tcp netview-aix-7 netview-aix-7 
1668/tcp netview-aix-8 netview-aix-8 
1669/tcp netview-aix-9 netview-aix-9 
1670/tcp netview-aix-10 netview-aix-10 
1671/tcp netview-aix-11 netview-aix-11 
1672/tcp netview-aix-12 netview-aix-12 
1673/tcp proshare-mc-1 Intel Proshare Multicast 
1674/tcp proshare-mc-2 Intel Proshare Multicast 
1675/tcp pdp Pacific Data Products 
1676/tcp netcomm1 netcomm1 
1677/tcp groupwise groupwise 
1678/tcp prolink prolink 
1679/tcp darcorp-lm darcorp-lm 
1681/tcp sd-elmd sd-elmd 
1682/tcp lanyon-* lanyon-* 
1683/tcp ncpm-hip ncpm-hip 
1684/tcp snaresecure SnareSecure 
1685/tcp n2nremote n2nremote 
1686/tcp cvmon cvmon 
1687/tcp nsjtp-ctrl nsjtp-ctrl 
1688/tcp nsjtp-data nsjtp-data 
1689/tcp firefox firefox 
1690/tcp ng-umds ng-umds 
1691/tcp empire-empuma empire-empuma 
1692/tcp sstsys-lm sstsys-lm 
1693/tcp rrirtr rrirtr 
1694/tcp rrimwm rrimwm 
1695/tcp rrilwm rrilwm 
1696/tcp rrifmm rrifmm 
1697/tcp rrisat rrisat 
1698/tcp rsvp-encap-1 RSVP-ENCAPSULATION-1 
1699/tcp rsvp-encap-2 RSVP-ENCAPSULATION-2 
1700/tcp mps-raft mps-raft 
1701/tcp l2f,l2tp l2f,l2tp 
1702/tcp deskshare deskshare 
1703/tcp hb-engine hb-engine 
1704/tcp bcs-broker bcs-broker 
1705/tcp slingshot slingshot 
1706/tcp jetform jetform 
1707/tcp vdmplay vdmplay 
1708/tcp gat-lmd gat-lmd 
1709/tcp centra centra 
1710/tcp impera impera 
1711/tcp pptconference pptconference 
1712/tcp registrar resource monitoring service 
1713/tcp conferencetalk ConferenceTalk 
1714/tcp sesi-lm sesi-lm 
1715/tcp houdini-lm houdini-lm 
1716/tcp xmsg xmsg 
1717/tcp fj-hdnet fj-hdnet 
1718/tcp h323gatedisc h323gatedisc 
1719/tcp h323gatestat h323gatestat 
1720/tcp h323hostcall h323hostcall 
1721/tcp caicci caicci 
1722/tcp hks-lm HKS License Manager 
1723/tcp pptp pptp 
1724/tcp csbphonemaster csbphonemaster 
1725/tcp iden-ralp iden-ralp 
1726/tcp iberiagames IBERIAGAMES 
1727/tcp winddx winddx 
1728/tcp telindus TELINDUS 
1729/tcp citynl CityNL License Management 
1730/tcp roketz roketz 
1731/tcp msiccp MSICCP 
1732/tcp proxim proxim 
1733/tcp siipat SIMS - SIIPAT Protocol for Alarm Transmission 
1734/tcp cambertx-lm Camber Corporation License Management 
1735/tcp privatechat PrivateChat 
1736/tcp street-stream street-stream 
1737/tcp ultimad ultimad 
1738/tcp gamegen1 GameGen1 
1739/tcp webaccess webaccess 
1740/tcp encore encore 
1741/tcp cisco-net-mgmt cisco-net-mgmt 
1742/tcp 3Com-nsd 3Com-nsd 
1743/tcp cinegrfx-lm Cinema Graphics License Manager 
1744/tcp ncpm-ft ncpm-ft 
1745/tcp remote-winsock remote-winsock 
1746/tcp ftrapid-1 ftrapid-1 
1747/tcp ftrapid-2 ftrapid-2 
1748/tcp oracle-em1 oracle-em1 
1749/tcp aspen-services aspen-services 
1750/tcp sslp Simple Socket Library‘s PortMaster 
1751/tcp swiftnet SwiftNet 
1752/tcp lofr-lm Leap of Faith Research License Manager 
1753/tcp translogic-lm Translogic License Manager 
1754/tcp oracle-em2 oracle-em2 
1755/tcp ms-streaming ms-streaming 
1756/tcp capfast-lmd capfast-lmd 
1757/tcp cnhrp cnhrp 
1758/tcp tftp-mcast tftp-mcast 
1759/tcp spss-lm SPSS License Manager 
1760/tcp www-ldap-gw www-ldap-gw 
1761/tcp cft-0 cft-0 
1762/tcp cft-1 cft-1 
1763/tcp cft-2 cft-2 
1764/tcp cft-3 cft-3 
1765/tcp cft-4 cft-4 
1766/tcp cft-5 cft-5 
1767/tcp cft-6 cft-6 
1768/tcp cft-7 cft-7 
1769/tcp bmc-net-adm bmc-net-adm 
1770/tcp bmc-net-svc bmc-net-svc 
1771/tcp vaultbase vaultbase 
1772/tcp essweb-gw EssWeb Gateway 
1773/tcp kmscontrol KMSControl 
1774/tcp global-dtserv global-dtserv 
1776/tcp femis Federal Emergency Management Information System 
1777/tcp powerguardian powerguardian 
1779/tcp pharmasoft pharmasoft 
1780/tcp dpkeyserv dpkeyserv 
1781/tcp answersoft-lm answersoft-lm 
1782/tcp hp-hcip hp-hcip 
1783/tcp fjris Fujitsu Remote Install Service 
1784/tcp finle-lm Finle License Manager 
1785/tcp windlm Wind River Systems License Manager 
1786/tcp funk-logger funk-logger 
1787/tcp funk-license funk-license 
1788/tcp psmond psmond 
1789/tcp hello hello 
1790/tcp nmsp Narrative Media Streaming Protocol 
1791/tcp ea1 EA1 
1792/tcp ibm-dt-2 ibm-dt-2 
1793/tcp rsc-robot rsc-robot 
1794/tcp cera-bcm cera-bcm 
1795/tcp dpi-proxy dpi-proxy 
1796/tcp vocaltec-admin Vocaltec Server Administration 
1797/tcp uma UMA 
1798/tcp etp Event Transfer Protocol 
1799/tcp netrisk NETRISK 
1801/tcp msmq Microsoft Message Que 
1804/tcp enl ENL 
1807/tcp fhsp Fujitsu Hot Standby Protocol 
1812/tcp radius RADIUS 
1813/tcp radius-acct RADIUS Accounting 
1814/tcp tdp-suite TDP Suite 
1815/tcp mmpft MMPFT 
1816/tcp harp HARP 
1818/tcp etftp Enhanced Trivial File Transfer Protocol 
1819/tcp plato-lm Plato License Manager 
1820/tcp mcagent mcagent 
1821/tcp donnyworld donnyworld 
1822/tcp es-elmd es-elmd 
1823/tcp unisys-lm Unisys Natural Language License Manager 
1824/tcp metrics-pas metrics-pas 
1850/tcp gsi GSI 
1863/tcp msnp MSNP 
1865/tcp entp ENTP 
1901/tcp fjicl-tep-a Fujitsu ICL Terminal Emulator Program A 
1902/tcp fjicl-tep-b Fujitsu ICL Terminal Emulator Program B 
1903/tcp linkname Local Link Name Resolution 
1904/tcp fjicl-tep-c Fujitsu ICL Terminal Emulator Program C 
1905/tcp sugp Secure UP.Link Gateway Protocol 
1906/tcp tpmd TPortMapperReq 
1908/tcp dawn Dawn 
1911/tcp mtp Starlight Networks Multimedia Transport Protocol 
1913/tcp armadp armadp 
1914/tcp elm-momentum Elm-Momentum 
1915/tcp facelink FACELINK 
1916/tcp persona Persoft Persona 
1917/tcp noagent nOAgent 
1921/tcp noadmin NoAdmin 
1944/tcp close-combat close-combat 
1945/tcp dialogic-elmd dialogic-elmd 
1946/tcp tekpls tekpls 
1947/tcp hlserver hlserver 
1948/tcp eye2eye eye2eye 
1949/tcp ismaeasdaqlive ISMA Easdaq Live 
1950/tcp ismaeasdaqtest ISMA Easdaq Test 
1951/tcp bcs-lmserver bcs-lmserver 
1973/tcp dlsrap Data Link Switching Remote Access Protocol 
1985/tcp hsrp Hot Standby Router Protocol 
1986/tcp licensedaemon cisco license management 
1987/tcp tr-rsrb-p1 cisco RSRB Priority 1 port 
1988/tcp tr-rsrb-p2 cisco RSRB Priority 2 port 
1989/tcp tr-rsrb-p3 cisco RSRB Priority 3 port 
1989/tcp mshnet MHSnet system 
1990/tcp stun-p1 cisco STUN Priority 1 port 
1991/tcp stun-p2 cisco STUN Priority 2 port 
1992/tcp stun-p3 cisco STUN Priority 3 port 
1992/tcp ipsendmsg IPsendmsg 
1993/tcp snmp-tcp-port cisco SNMP TCP port 
1994/tcp stun-port cisco serial tunnel port 
1995/tcp perf-port cisco perf port 
1996/tcp tr-rsrb-port cisco Remote SRB port 
1997/tcp gdp-port cisco Gateway Discovery Protocol 
1998/tcp x25-svc-port cisco X.25 service (XOT) 
1999/tcp tcp-id-port cisco identification port 
2000/tcp callbook 
2001/tcp dc 
2002/tcp globe 
2004/tcp mailbox 
2005/tcp berknet 
2007/tcp dectalk 
2012/tcp ttyinfo 
2013/tcp raid-am 
2014/tcp troff 
2015/tcp cypress 
2025/tcp ellpack 
2030/tcp device2 
2032/tcp blackboard 
2033/tcp glogger 
2035/tcp imsldoc 
2040/tcp lam 
2042/tcp isis isis 
2044/tcp rimsl 
2045/tcp cdfunc 
2046/tcp sdfunc 
2047/tcp dls 
2049/tcp shilp 
2049/tcp nfs Network File System - Sun Microsystems 
2065/tcp dlsrpn Data Link Switch Read Port Number 
2067/tcp dlswpn Data Link Switch Write Port Number 
2090/tcp lrp Load Report Protocol 
2091/tcp prp PRP 
2102/tcp zephyr-srv Zephyr server 
2103/tcp zephyr-clt Zephyr serv-hm connection 
2104/tcp zephyr-hm Zephyr hostmanager 
2105/tcp minipay MiniPay 
2200/tcp ici ICI 
2201/tcp ats Advanced Training System Program 
2213/tcp kali Kali 
2222/tcp unreg-ab2 Allen-Bradley unregistered port 
2232/tcp ivs-video IVS Video default 
2234/tcp directplay DirectPlay 
2236/tcp nani Nani 
2240/tcp recipe RECIPe 
2241/tcp ivsd IVS Daemon 
2242/tcp foliocorp Folio Remote Server 
2279/tcp xmquery xmquery 
2280/tcp lnvpoller LNVPOLLER 
2281/tcp lnvconsole LNVCONSOLE 
2282/tcp lnvalarm LNVALARM 
2283/tcp lnvstatus LNVSTATUS 
2284/tcp lnvmaps LNVMAPS 
2285/tcp lnvmailmon LNVMAILMON 
2286/tcp nas-metering NAS-Metering 
2287/tcp dna DNA 
2288/tcp netml NETML 
2300/tcp cvmmon CVMMON 
2307/tcp pehelp pehelp 
2308/tcp sdhelp sdhelp 
2313/tcp iapp IAPP (Inter Access Point Protocol) 
2316/tcp sent-lm SENT License Manager 
2321/tcp rdlap RDLAP over UDP 
2322/tcp ofsd ofsd 
2323/tcp 3d-nfsd 3d-nfsd 
2326/tcp idcp IDCP 
2327/tcp xingcsm xingcsm 
2329/tcp nvd NVD 
2330/tcp tscchat TSCCHAT 
2333/tcp snapp SNAPP 
2337/tcp ideesrv ideesrv 
2344/tcp fcmsys fcmsys 
2345/tcp dbm dbm 
2356/tcp gxtelmd GXT License Managemant 
2358/tcp futrix Futrix 
2390/tcp rsmtp RSMTP 
2396/tcp wusage Wusage 
2397/tcp ncl NCL 
2398/tcp orbiter Orbiter 
2401/tcp cvspserver cvspserver 
2407/tcp orion Orion 
2412/tcp cdn CDN 
2415/tcp comtest COMTEST 
2418/tcp cas cas 
2421/tcp g-talk G-Talk 
2423/tcp rnrp RNRP 
2427/tcp stgcp Simple telephony Gateway Control Protocol 
2428/tcp ott One Way Trip Time 
2429/tcp ft-role FT-ROLE 
2430/tcp venus venus 
2432/tcp codasrv codasrv 
2436/tcp topx TOP/X 
2438/tcp msp MSP 
2443/tcp powerclientcsf PowerClient Central Storage Facility 
2445/tcp dtn1 DTN1 
2447/tcp ovwdb OpenView NNM daemon 
2449/tcp ratl RATL 
2451/tcp netchat netchat 
2458/tcp griffin griffin 
2500/tcp rtsserv Resource Tracking system server 
2501/tcp rtsclient Resource Tracking system client 

2528/tcp ncr_ccl NCR CCL 
2529/tcp utsftp UTS FTP 
2532/tcp ovtopmd OVTOPMD 
2592/tcp netrek netrek 
2628/tcp dict DICT 
2634/tcp pk-electronics PK Electronics 
2636/tcp solve Solve 
2639/tcp aminet AMInet 
2641/tcp hdl-srv HDL Server 
2642/tcp tragic Tragic 
2646/tcp and-lm AND Licence Manager 
2653/tcp sonus Sonus 
2655/tcp unglue UNIX Nt Glue 
2656/tcp kana Kana 
2700/tcp tqdata tqdata 
2784/tcp www-dev world wide web - development 
2785/tcp aic-np aic-np 
2786/tcp aic-oncrpc aic-oncrpc - Destiny MCD database 
2787/tcp piccolo piccolo - Cornerstone Software 
2788/tcp fryeserv NetWare Loadable Module - Seagate Software 
2789/tcp media-agent Media Agent 
2908/tcp mao mao 
2912/tcp epicon Epicon 
2971/tcp netclip Net Clip 
2974/tcp signal Signal 
2975/tcp fjmpcm Fujitsu Configuration Management Service 
3000/tcp hbci HBCI 
3001/tcp redwood-broker Redwood Broker 
3003/tcp cgms CGMS 
3010/tcp gw Telerate Workstation 
3012/tcp twsdss Trusted Web Client 
3020/tcp cifs CIFS 
3047/tcp hlserver Fast Security HL Server 
3048/tcp pctrader Sierra Net PC Trader 
3049/tcp nsws NSWS 
3105/tcp cardbox Cardbox 
3130/tcp icpv2 ICPv2 
3141/tcp vmodem VMODEM 
3143/tcp seaview Sea View 
3147/tcp rfio RFIO 
3264/tcp ccmail cc:mail/lotus 
3266/tcp ns-cfg-server NS CFG Server 
3267/tcp ibm-dial-out IBM Dial Out 
3268/tcp msft-gc Microsoft Global Catalog 
3273/tcp sxmp Simple Extensible Multiplexed Protocol 
3275/tcp samd SAMD 
3279/tcp admind admind 
3281/tcp sysopt SYSOPT 
3284/tcp 4talk 4Talk 
3285/tcp plato Plato 
3286/tcp e-net E-Net 
3288/tcp cops COPS 
3289/tcp enpc ENPC 
3290/tcp caps-lm CAPS LOGISTICS TOOLKIT - LM 
3291/tcp sah-lm S A Holditch & Associates - LM 
3293/tcp fg-fps fg-fps 
3294/tcp fg-gip fg-gip 
3296/tcp rib-slm Rib License Manager 
3299/tcp pdrncs pdrncs 
3304/tcp opsession-srvr OP Session Server 
3306/tcp MySQL MySQL 
3309/tcp tns-adv TNS ADV 
3313/tcp uorb Unify Object Broker 
3314/tcp uohost Unify Object Host 
3315/tcp cdid CDID 
3318/tcp ssrip Swith to Swith Routing Information Protocol 
3319/tcp sdt-lmd SDT License Manager 
3321/tcp vnsstr VNSSTR 
3326/tcp sftu SFTU 
3327/tcp bbars BBARS 
3328/tcp egptlm Eaglepoint License Manager 
3329/tcp hp-device-disc HP Device Disc 
3330/tcp mcs-calypsoicf MCS Calypso ICF 
3333/tcp dec-notes DEC Notes 
3338/tcp anet-b OMF data b 
3339/tcp anet-l OMF data l 
3340/tcp anet-m OMF data m 
3341/tcp anet-h OMF data h 
3342/tcp webtie WebTIE 
3351/tcp btrieve BTRIEVE 
3352/tcp ssql SSQL 
3353/tcp fatpipe FATPIPE 
3354/tcp suitjd SUITJD 
3362/tcp dj-ilm DJ ILM 
3372/tcp tip2 TIP 2 
3378/tcp wsicopy WSICOPY 
3379/tcp socorfs SOCORFS 
3381/tcp geneous Geneous 
3383/tcp esp-lm Enterprise Software Products License Manager 
3390/tcp dsc Distributed Service Coordinator 
3391/tcp savant SAVANT 
3392/tcp efi-lm EFI License Management 
3395/tcp dyna-lm Dyna License Manager (Elam) 
3421/tcp bmap Bull Apprise portmapper 
3455/tcp prsvp RSVP Port 
3456/tcp vat VAT default data 
3457/tcp vat-control VAT default control 
3900/tcp udt_os Unidata UDT OS 
3984/tcp mapper-nodemgr MAPPER network node manager 
3985/tcp mapper-mapethd MAPPER TCP/IP server 
3986/tcp mapper-ws_ethd MAPPER workstation server 
4001/tcp newoak NewOak 
4008/tcp netcheque NetCheque accounting 
4096/tcp bre BRE (Bridge Relay Element) 
4132/tcp nuts_dem NUTS Daemon 
4133/tcp nuts_bootp NUTS Bootp Server 
4143/tcp oidsr Document Replication 
4321/tcp rwhois Remote Who Is 
4343/tcp unicall UNICALL 
4346/tcp elanlm ELAN LM 
4348/tcp itose ITOSE 
4444/tcp krb524 KRB524 
4444/tcp nv-video NV Video default 
4446/tcp n1-fwp N1-FWP 
4449/tcp privatewire PrivateWire 
4450/tcp camp Camp 
4451/tcp ctisystemmsg CTI System Msg 
4452/tcp ctiprogramload CTI Program Load 
4500/tcp sae-urn sae-urn 
4501/tcp urn-x-cdchoice urn-x-cdchoice 
4546/tcp sf-lm SF License Manager (Sentinel) 
4672/tcp rfa remote file access server 
4800/tcp iims Icona Instant Messenging System 
4801/tcp iwec Icona Web Embedded Chat 
4802/tcp ilss Icona License System Server 
4827/tcp htcp HTCP 
4868/tcp phrelay Photon Relay 
4885/tcp abbs ABBS 
5002/tcp rfe radio free ethernet 
5003/tcp fmpro-internal FileMaker, Inc. - Proprietary transport 
5004/tcp avt-profile-1 avt-profile-1 
5005/tcp avt-profile-2 avt-profile-2 
5010/tcp telelpathstart TelepathStart 
5020/tcp zenginkyo-1 zenginkyo-1 
5021/tcp zenginkyo-2 zenginkyo-2 
5050/tcp mmcc multimedia conference control tool 
5060/tcp sip SIP 
5150/tcp atmp Ascend Tunnel Management Protocol 
5190/tcp aol America-Online 
5191/tcp aol-1 AmericaOnline1 
5192/tcp aol-2 AmericaOnline2 
5193/tcp aol-3 AmericaOnline3 
5272/tcp pk PK 
5300/tcp hacl-hb # HA cluster heartbeat 
5301/tcp hacl-gs # HA cluster general services 
5304/tcp hacl-local # HA Cluster Commands 
5305/tcp hacl-test # HA Cluster Test 
5307/tcp sco-aip SCO AIP 
5310/tcp outlaws Outlaws 
5311/tcp tmlogin TM Login 
5400/tcp excerpt Excerpt Search 
5402/tcp mftp MFTP 
5404/tcp hpoms-dps-lstn HPOMS-DPS-LSTN 
5407/tcp foresyte-clear Foresyte-Clear 
5409/tcp salient-dtasrv Salient Data Server 
5410/tcp salient-usrmgr Salient User Manager 
5411/tcp actnet ActNet 
5414/tcp statusd StatusD 
5418/tcp mcntp MCNTP 
5419/tcp dj-ice DJ-ICE 
5500/tcp fcp-addr-srvr1 fcp-addr-srvr1 
5501/tcp fcp-addr-srvr2 fcp-addr-srvr2 
5502/tcp fcp-srvr-inst1 fcp-srvr-inst1 
5503/tcp fcp-srvr-inst2 fcp-srvr-inst2 
5504/tcp fcp-cics-gw1 fcp-cics-gw1 
5555/tcp personal-agent Personal Agent 
5602/tcp a1-msc A1-MSC 
5603/tcp a1-bs A1-BS 
5631/tcp pcanywheredata pcANYWHEREdata 
5632/tcp pcanywherestat pcANYWHEREstat 
5678/tcp rrac Remote Replication Agent Connection 
5679/tcp dccm Direct Cable Connect Manager 
5713/tcp proshareaudio proshare conf audio 
5714/tcp prosharevideo proshare conf video 
5715/tcp prosharedata proshare conf data 
5717/tcp prosharenotify proshare conf notify 
5729/tcp openmail Openmail User Agent Layer 
5741/tcp ida-discover1 IDA Discover Port 1 
5742/tcp ida-discover2 IDA Discover Port 2 
5745/tcp fcopy-server fcopy-server 
5746/tcp fcopys-server fcopys-server 
5755/tcp openmailg OpenMail Desk Gateway server 
5757/tcp x500ms OpenMail X.500 Directory Server 
5766/tcp openmailns OpenMail NewMail Server 
5767/tcp s-openmail OpenMail Suer Agent Layer (Secure) 
6000/tcp x11 X Window System 
6110/tcp softcm HP SoftBench CM 
6111/tcp spc HP SoftBench Sub-Process Control 
6112/tcp dtspcd dtspcd 
6123/tcp backup-express Backup Express 
6141/tcp meta-corp Meta Corporation License Manager 
6142/tcp aspentec-lm Aspen Technology License Manager 
6143/tcp watershed-lm Watershed License Manager 
6144/tcp statsci1-lm StatSci License Manager - 1 
6145/tcp statsci2-lm StatSci License Manager - 2 
6146/tcp lonewolf-lm Lone Wolf Systems License Manager 
6147/tcp montage-lm Montage License Manager 
6148/tcp ricardo-lm Ricardo North America License Manager 

6149/tcp tal-pod tal-pod 
6253/tcp crip CRIP 
6389/tcp clariion-evr01 clariion-evr01 
6500/tcp boks BoKS Master 
6558/tcp xdsxdm 
6665/tcp ircu IRCU 
6670/tcp vocaltec-gold Vocaltec Global Online Directory 
6672/tcp vision_server vision_server 
6673/tcp vision_elmd vision_elmd 
6790/tcp hnmp HNMP 
6831/tcp ambit-lm ambit-lm 
6969/tcp acmsoda acmsoda 
7010/tcp ups-onlinet onlinet uninterruptable power supplies 
7020/tcp dpserve DP Serve 
7070/tcp arcp ARCP 
7099/tcp lazy-ptop lazy-ptop 
7100/tcp font-service X Font Service 
7121/tcp virprot-lm Virtual Prototypes License Manager 
7174/tcp clutild Clutild 
7200/tcp fodms FODMS FLIP 
7201/tcp dlip DLIP 
7395/tcp winqedit winqedit 
7426/tcp pmdmgr OpenView DM Postmaster Manager 
7430/tcp xmpv7 OpenView DM xmpv7 api pipe 
7431/tcp pmd OpenView DM ovc/xmpv3 api pipe 
7491/tcp telops-lmd telops-lmd 
7511/tcp pafec-lm pafec-lm 
7544/tcp nta-ds FlowAnalyzer DisplayServer 
7545/tcp nta-us FlowAnalyzer UtilityServer 
7588/tcp sun-lm Sun License Manager 
7777/tcp cbt cbt 
7781/tcp accu-lmgr accu-lmgr 
7932/tcp t2-drm Tier 2 Data Resource Manager 
7933/tcp t2-brm Tier 2 Business Rules Manager 
7999/tcp irdmi2 iRDMI2 
8000/tcp irdmi iRDMI 
8032/tcp pro-ed ProEd 
8400/tcp cvd cvd 
8401/tcp sabarsd sabarsd 
8402/tcp abarsd abarsd 
8403/tcp admind admind 
8450/tcp npmp npmp 
8473/tcp vp2p Vitual Point to Point 
8888/tcp ddi-tcp-1 NewsEDGE server TCP (TCP 1) 
8889/tcp ddi-tcp-2 Desktop Data TCP 1 
8890/tcp ddi-tcp-3 Desktop Data TCP 2 
8891/tcp ddi-tcp-4 Desktop Data TCP 3: NESS application 
8892/tcp ddi-tcp-5 Desktop Data TCP 4: FARM product 
8893/tcp ddi-tcp-6 Desktop Data TCP 5: NewsEDGE/Web application 
8894/tcp ddi-tcp-7 Desktop Data TCP 6: COAL application 
9000/tcp cslistener CSlistener 
9006/tcp sctp SCTP 
9090/tcp websm WebSM 
9535/tcp man 
9594/tcp msgsys Message System 
9595/tcp pds Ping Discovery Service 
9876/tcp sd Session Director 
9992/tcp palace Palace 
9993/tcp palace Palace 
9994/tcp palace Palace 
9995/tcp palace Palace 
9996/tcp palace Palace 
9997/tcp palace Palace 
9998/tcp distinct32 Distinct32 
9999/tcp distinct distinct 
10000/tcp ndmp Network Data Management Protocol 
11000/tcp irisa IRISA 
11001/tcp metasys Metasys 
12753/tcp tsaf tsaf port 
13160/tcp i-zipqd I-ZIPQD 
13720/tcp bprd BPRD Protocol (VERITAS NetBackup) 
13721/tcp bpbrm BPBRM Protocol (VERITAS NetBackup) 
13782/tcp bpcd VERITAS NetBackup 
17219/tcp chipper Chipper 
18000/tcp biimenu Beckman Instruments, Inc. 
19410/tcp hp-sco hp-sco 
19411/tcp hp-sca hp-sca 
19541/tcp jcp JCP Client 
21845/tcp webphone webphone 
21846/tcp netspeak-is NetSpeak Corp. Directory Services 
21847/tcp netspeak-cs NetSpeak Corp. Connection Services 
21848/tcp netspeak-acd NetSpeak Corp. Automatic Call Distribution 
21849/tcp netspeak-cps NetSpeak Corp. Credit Processing System 
22273/tcp wnn6 wnn6 
22555/tcp vocaltec-wconf Vocaltec Web Conference 
22800/tcp aws-brf Telerate Information Platform LAN 
22951/tcp brf-gw Telerate Information Platform WAN 
24000/tcp med-ltp med-ltp 
24004/tcp med-ovw med-ovw 
24005/tcp med-ci med-ci 
25000/tcp icl-twobase1 icl-twobase1 
25001/tcp icl-twobase2 icl-twobase2 
25002/tcp icl-twobase3 icl-twobase3 
25003/tcp icl-twobase4 icl-twobase4 
25004/tcp icl-twobase5 icl-twobase5 
25005/tcp icl-twobase6 icl-twobase6 
25006/tcp icl-twobase7 icl-twobase7 
25007/tcp icl-twobase8 icl-twobase8 
25008/tcp icl-twobase9 icl-twobase9 
25009/tcp icl-twobase10 icl-twobase10 
25793/tcp vocaltec-hos Vocaltec Address Server 
26000/tcp quake quake 
26208/tcp wnn6-ds wnn6-ds 
45678/tcp eba EBA PRISE 
47557/tcp dbbrowse Databeam Corporation 
47806/tcp ap ALC Protocol 
47808/tcp bacnet Building Automation and Control Networks 

0 通常用于分析操作系统。这一方法能够工作是因为在一些系统中“0”是无效端口,当你试图使用一种通常的闭合端口连接它时将产生不同的结果。一种典型的扫描:使用IP地址为0.0.0.0,设置ACK位并在以太网层广播。

1 tcpmux TCP Port Service Multiplexer 传输控制协议端口服务多路开关选择器 
2 compressnet Management Utility   compressnet 管理实用程序 
3 compressnet Compression Process   压缩进程 
5 rje Remote Job Entry     远程作业登录 
7 echo Echo       回显 
9 discard Discard     丢弃 
11 systat Active Users     在线用户 
13 daytime Daytime      时间 
17 qotd Quote of the Day    每日引用 
18 msp Message Send Protocol    消息发送协议 
19 chargen Character Generator   字符发生器 
20 ftp-data File Transfer[Default Data]  文件传输协议(默认数据口)  
21 ftp File Transfer[Control]    文件传输协议(控制) 
22 ssh SSH Remote Login Protocol   SSH远程登录协议 
23 telnet Telnet     终端仿真协议 
24 any private mail system    预留给个人用邮件系统 
25 smtp Simple Mail Transfer    简单邮件发送协议 
27 nsw-fe NSW User System FE    NSW 用户系统现场工程师 
29 msg-icp MSG ICP      MSG ICP 
31 msg-auth MSG Authentication   MSG验证 
33 dsp Display Support Protocol   显示支持协议 
35 any private printer server   预留给个人打印机服务 
37 time Time       时间 
38 rap Route Access Protocol    路由访问协议 
39 rlp Resource Location Protocol   资源定位协议 
41 graphics Graphics     图形 
42 nameserver WINS Host Name Server   WINS 主机名服务 
43 nicname Who Is     "绰号" who is服务 
44 mpm-flags MPM FLAGS Protocol   MPM(消息处理模块)标志协议 
45 mpm Message Processing Module [recv]  消息处理模块  
46 mpm-snd MPM [default send]    消息处理模块(默认发送口) 
47 ni-ftp NI FTP     NI FTP 
48  auditd Digital Audit Daemon   数码音频后台服务49 tacacs Login Host Protocol (TACACS)  TACACS登录主机协议50 re-mail-ck Remote Mail Checking Protocol  远程邮件检查协议[未结束] 
51 la-maint IMP Logical Address Maintenance  IMP(接口信息处理机)逻辑地址维护 
52 xns-time XNS Time Protocol    施乐网络服务系统时间协议 
53 domain Domain Name Server    域名服务器 
54 xns-ch XNS Clearinghouse     施乐网络服务系统票据交换 55 isi-gl ISI Graphics Language   ISI图形语言 
56 xns-auth XNS Authentication   施乐网络服务系统验证 
57 ? any private terminal access   预留个人用终端访问 
58 xns-mail XNS Mail     施乐网络服务系统邮件 
59 any private file service    预留个人文件服务 
60 Unassigned      未定义 
61 ni-mail NI MAIL      NI邮件? 
62 acas ACA Services     异步通讯适配器服务 
63 whois+ whois+      WHOIS+ 
64 covia Communications Integrator (CI)  通讯接口  
65 tacacs-ds TACACS-Database Service   TACACS数据库服务 
66 sql*net Oracle SQL*NET    Oracle SQL*NET 
67 bootps Bootstrap Protocol Server   引导程序协议服务端 
68 bootpc Bootstrap Protocol Client   引导程序协议客户端 
69 tftp Trivial File Transfer    小型文件传输协议 
70 gopher Gopher     信息检索协议 
71 netrjs-1 Remote Job Service   远程作业服务 
72 netrjs-2 Remote Job Service   远程作业服务 
73 netrjs-3 Remote Job Service   远程作业服务 
74 netrjs-4 Remote Job Service   远程作业服务 
75 any private dial out service   预留给个人拨出服务 
76 deos Distributed External Object Store 分布式外部对象存储  
77 any private RJE service     预留给个人远程作业输入服务 
78 vettcp vettcp     修正TCP? 
79 finger Finger     查询远程主机在线用户等信息 
80 http World Wide Web HTTP     全球信息网超文本传输协议 81 hosts2-ns HOSTS2 Name Server   HOST2名称服务 
82 xfer XFER Utility     传输实用程序 
83 mit-ml-dev MIT ML Device     模块化智能终端ML设备 
84 ctf Common Trace Facility    公用追踪设备 
85 mit-ml-dev MIT ML Device     模块化智能终端ML设备 
86 mfcobol Micro Focus Cobol    Micro Focus Cobol编程语言 
87 any private terminal link   预留给个人终端连接 
88 kerberos Kerberos     Kerberros安全认证系统 
89 su-mit-tg SU/MIT Telnet Gateway   SU/MIT终端仿真网关 
90 dnsix DNSIX Securit Attribute Token Map  DNSIX 安全属性标记图91 mit-dov MIT Dover Spooler    MIT Dover假脱机 
92 npp Network Printing Protocol   网络打印协议 
93 dcp Device Control Protocol   设备控制协议 
94 objcall Tivoli Object Dispatcher   Tivoli对象调度 
95 supdup  SUPDUP     
96 dixie DIXIE Protocol Specification   DIXIE协议规范 
97 swift-rvf(Swift Remote Virtural File Protocol)快速远程虚拟文件协议98 tacnews TAC News      TAC新闻协议 


限制端口防非法入侵

一般来说,我们采用一些功能强大的反黑软件和防火墙来保证我们的系统安全,本文拟用一种简易的办法——通过限制端口来帮助大家防止非法入侵。

非法入侵的方式

简单说来,非法入侵的方式可粗略分为4种:

        1、扫描端口,通过已知的系统Bug攻入主机。
  2、种植木马,利用木马开辟的后门进入主机。
  3、采用数据溢出的手段,迫使主机提供后门进入主机。
  4、利用某些软件设计的漏洞,直接或间接控制主机。

  非法入侵的主要方式是前两种,尤其是利用一些流行的黑客工具,通过第一种方式攻击主机的情况最多、也最普遍;而对后两种方式来说,只有一些手段高超的黑客才利用,波及面并不广泛,而且只要这两种问题一出现,软件服务商很快就会提供补丁,及时修复系统。

  因此,如果能限制前两种非法入侵方式,就能有效防止利用黑客工具的非法入侵。而且前两种非法入侵方式有一个共同点,就是通过端口进入主机。

   端口就像一所房子(服务器)的几个门一样,不同的门通向不同的房间(服务器提供的不同服务)。我们常用的FTP默认端口为21,而WWW网页一般默认端 口是80。但是有些马虎的网络管理员常常打开一些容易被侵入的端口服务,比如139等;还有一些木马程序,比如冰河、BO、广外等都是自动开辟一个您不察 觉的端口。那么,只要我们把自己用不到的端口全部*起来,不就杜绝了这两种非法入侵吗?

限制端口的方法

  对于个人用户来说,您可以限制所有的端口,因为您根本不必让您的机器对外提供任何服务;而对于对外提供网络服务的服务器,我们需把必须利用的端口(比如WWW端口80、FTP端口21、邮件服务端口25、110等)开放,其他的端口则全部关闭。

  这里,对于采用Windows 2000或者Windows XP的用户来说,不需要安装任何其他软件,可以利用“TCP/IP筛选”功能限制服务器的端口。具体设置如下:

  1、右键点击“网上邻居”,选择“属性”,然后双击“本地连接”(如果是拨号上网用户,选择“我的连接”图标),弹出“本地连接状态”对话框。

  2、点击[属性]按钮,弹出“本地连接 属性”,选择“此连接使用下列项目”中的“Internet协议(TCP/IP)”,然后点击[属性]按钮。

  3、在弹出的“Internet协议(TCP/IP)”对话框中点击[高级]按钮。在弹出的“高级TCP/IP 设置”中,选择“选项”标签,选中“TCP/IP筛选”,然后点击[属性]按钮。

  4、在弹出的“TCP/IP筛选”对话框里选择“启用TCP/IP筛选”的复选框,然后把左边“TCP端口”上的“只允许”选上。

每一项服务都对应相应的端口,比如众如周知的WWW服务的端口是80,smtp是25,ftp是21,win2000安装中默认的都是这些服务开启的。对于个人用户来说确实没有必要,关掉端口也就是关闭无用的服务。


“控制面板”的“管理工具”中的“服务”中来配置。

1、关闭7.9等等端口:关闭Simple TCP/IP Service,支持以下TCP/IP服务:Character Generator,Daytime, Discard, Echo, 以及 Quote of the Day。

2、关闭80口:关掉WWW服务。在“服务”中显示名称为"World Wide Web Publishing Service",通过 Internet 信息服务的管理单元提供 Web 连接和管理。

3、关掉25端口:关闭Simple Mail Transport Protocol (SMTP)服务,它提供的功能是跨网传送电子邮件。

4、关掉21端口:关闭FTP Publishing Service,它提供的服务是通过 Internet 信息服务的管理单元提供 FTP 连接和管理。

5、关掉23端口:关闭Telnet服务,它允许远程用户登录到系统并且使用命令行运行控制台程序。

6、还有一个很重要的就是关闭server服务,此服务提供RPC支持、文件、打印以及命名管道共享。关掉它就关掉了win2k的默认共享,比如ipc$、c$、admin$等等,此服务关闭不影响您的其他操作。

7、还有一个就是139端口,139端口是NetBIOS Session端口,用来文件和打印共享,注意的是运行samba的unix机器也开放了139端口,功能一样。以前流光2000用来判断对方主机类型不太准确,估计就是139端口开放既认为是NT机,现在好了。

关闭139口听方法是在“网络和拨号连接”中“本地连接”中选取“Internet协议(TCP/IP)”属性,进入“高级TCP/IP设置”“WINS设置”里面有一项“禁用TCP/IP的NETBIOS”,打勾就关闭了139端口。

对于个人用户来说,可以在各项服务属性设置中设为“禁用”,以免下次重启服务也重新启动,端口也开放了。


谨防黑客通过“端口扫描”进行攻击


  黑客的探测方式里除了侦察IP,还有一项——端口扫描。通过“端口扫描”可以知道被扫描的计算机哪些服务、端口是打开而没有被使用的(可以理解为寻找通往计算机的通道)。

  一、端口扫描

  网上很容易找到远程端口扫描的工具,如Superscan、IP Scanner、Fluxay(流光)等( 
如图1),这就是用“流光”对试验主机192.168.1.8进行端口扫描后的结果。从中我们可以清楚地了解,该主机的哪些非常用端口是打开的;是否支持FTP、Web服务;且FTP服务是否支持“匿名”,以及IIS版本,是否有可以被成功攻破的IIS漏洞也显示出来。

  二、阻止端口扫描

  防范端口扫描的方法有两个:

  1.关闭闲置和有潜在危险的端口

   这个方法有些“死板”,它的本质是——将所有用户需要用到的正常计算机端口外的其他端口都关闭掉。因为就黑客而言,所有的端口都可能成为攻击的目标。换 句话说“计算机的所有对外通讯的端口都存在潜在的危险”,而一些系统必要的通讯端口,如访问网页需要的HTTP(80端口);QQ(4000端口)等不能 被关闭。

  在Windows NT核心系统(Windows 2000/XP/ 2003)中要关闭掉一些闲置端口是比较方便的,可以采用“定向关闭指定服务的端口”和“只开放允许端口的方式”。计算机的一些网络服务会有系统分配默认 的端口,将一些闲置的服务关闭掉,其对应的端口也会被关闭了(如图2)。进入“控制面板”、“管理工具”、“服务”项内,关闭掉计算机的一些没有使用的服 务(如FTP服务、DNS服务、IIS Admin服务等等),它们对应的端口也被停用了。至于“只开放允许端口的方式”,可以利用系统的“TCP/IP筛选”功能实现,设置的时候,“只允许” 系统的一些基本网络通讯需要的端口即可。

  2.检查各端口,有端口扫描的症状时,立即屏蔽该端口

  这种预防端口扫描的方式显然用户自己手工是不可能完成的,或者说完成起来相当困难,需要借助软件。这些软件就是我们常用的网络防火墙。

   防火墙的工作原理是:首先检查每个到达你的电脑的数据包,在这个包被你机上运行的任何软件看到之前,防火墙有完全的否决权,可以禁止你的电脑接收 Internet上的任何东西。当第一个请求建立连接的包被你的电脑回应后,一个“TCP/IP端口”被打开;端口扫描时,对方计算机不断和本地计算机建 立连接,并逐渐打开各个服务所对应的“TCP/IP端口”及闲置端口,防火墙经过自带的拦截规则判断,就能够知道对方是否正进行端口扫描,并拦截掉对方发 送过来的所有扫描需要的数据包。

  现在市面上几乎所有网络防火墙都能够抵御端口扫描,在默认安装后,应该检查一些防火墙所拦截的端口扫描规则是否被选中,否则它会放行端口扫描,而只是在日志中留下信息而已。






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