linux中开启指定端口

1.修改/etc/sysconfig/iptables文件,增加如下一行: 

 -A INPUT -m state --state NEW -m tcp -p tcp --dport 10000 -j ACCEPT 

-A RH-Firewall-1-INPUT -m state --state NEW -m tcp -p tcp --dport 10000 -j ACCEPT

重启 iptables

service iptables restart

2.重启防火墙,这里有两种方式重启防火墙  

service iptables start

3.或者用menu-system-administration-firewall ,去添加用户需要的端口。

By the way:

a. netstat -tanp 去显示端口状态。

 /usr/sbin/lsof -i 

b. telnet ipaddr port

to check if ip and port is available before making connection. 

参考

4.LINUX通过下面的命令可以开启允许对外访问的网络端口:

/sbin/iptables -I INPUT -p tcp --dport 8000 -j ACCEPT #开启8000端口

/etc/rc.d/init.d/iptables save #保存配置

/etc/rc.d/init.d/iptables restart #重启服务

/etc/init.d/iptables status # 查看端口是否已经开放 

5.Linux中如何开启8080端口供外界访问

1.修改文件/etc/sysconfig/iptables

[root@bogon ~]# cd /etc/sysconfig/
[root@bogon sysconfig]# vi iptables

文件内容如下,注意红色一行是新加的,目的是对外界开放8080端口

# Firewall configuration written by system-config-firewall
# Manual customization of this file is not recommended.
*filter
:INPUT ACCEPT [0:0]
:FORWARD ACCEPT [0:0]
:OUTPUT ACCEPT [0:0]
:RH-Firewall-1-INPUT - [0:0]
-A INPUT -j RH-Firewall-1-INPUT
-A RH-Firewall-1-INPUT -i lo -j ACCEPT
-A RH-Firewall-1-INPUT -p icmp --icmp-type any -j ACCEPT
-A RH-Firewall-1-INPUT -p 50 -j ACCEPT
-A RH-Firewall-1-INPUT -p 51 -j ACCEPT
-A RH-Firewall-1-INPUT -p udp --dport 5353 -d 224.0.0.251 -j ACCEPT
-A RH-Firewall-1-INPUT -p udp -m udp --dport 631 -j ACCEPT
-A RH-Firewall-1-INPUT -p tcp -m tcp --dport 631 -j ACCEPT
-A RH-Firewall-1-INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT
-A RH-Firewall-1-INPUT -m state --state NEW -m tcp -p tcp --dport 21 -j ACCEPT
-A RH-Firewall-1-INPUT -m state --state NEW -m tcp -p tcp --dport 22 -j ACCEPT
-A RH-Firewall-1-INPUT -m state --state NEW -m tcp -p tcp --dport 443 -j ACCEPT
-A RH-Firewall-1-INPUT -m state --state NEW -m tcp -p tcp --dport 80 -j ACCEPT
-A RH-Firewall-1-INPUT -m state --state NEW -m tcp -p tcp --dport 8080 -j ACCEPT
-A RH-Firewall-1-INPUT -j REJECT --reject-with icmp-host-prohibited
-A FORWARD -j REJECT --reject-with icmp-host-prohibited
COMMIT

这行文字实际是从上一行拷贝修改而来,在VI中拷贝一行用yy,拷贝多行用yyn,粘贴用p。还算方便的。

2.将iptables服务重启。

[root@bogon sysconfig]# service iptables restart
Flushing firewall rules:                                   [  OK  ]
Setting chains to policy ACCEPT: filter                    [  OK  ]
Unloading iptables modules:                                [  OK  ]
Applying iptables firewall rules:                          [  OK  ]
Loading additional iptables modules: ip_conntrack_ftp      [  OK  ]
[root@bogon sysconfig]# 

3.如若不想修改iptables表,可以直接输入下面命令:

iptables -I INPUT -p tcp --dport 8080 -j ACCEPT  # linux iptables开放端口命令

参考

上一篇:Centos 7安装python3(PY3.6)


下一篇:scikit-learn学习线性回归