原理：

 

 

步骤：

1.安装vsftpd服务

# yum install vsftpd

# rpm -ql vsftpd

/etc/logrotate.d/vsftpd
/etc/pam.d/vsftpd
/etc/rc.d/init.d/vsftpd
/etc/vsftpd
/etc/vsftpd/ftpusers
/etc/vsftpd/user_list
/etc/vsftpd/vsftpd.conf
/etc/vsftpd/vsftpd_conf_migrate.sh
/usr/sbin/vsftpd
...
...
/var/ftp
/var/ftp/pub

# service vsftpd start

# chkconfig vsftpd on

# chkconfig --list | grep vsftpd

vsftpd             0:off    1:off    2:on    3:on    4:on    5:on    6:off

# mkdir /mnt/cdrom

# mount /dev/cdrom /mnt/cdrom

# cp -r /mnt/cdrom/. /var/ftp/    （把光盘上所有文件拷贝到ftp的根目录）

# du -sh /var/ftp

3.8G    /var/ftp

 

2.安装dhcp服务并配置

# yum install dhcp

# rpm -ql dhcp

/etc/dhcp
/etc/dhcp/dhcpd.conf
/etc/dhcp/dhcpd6.conf
/etc/openldap/schema/dhcp.schema
/etc/portreserve/dhcpd
/etc/rc.d/init.d/dhcpd
/etc/rc.d/init.d/dhcpd6
/etc/rc.d/init.d/dhcrelay
/etc/rc.d/init.d/dhcrelay6
/etc/sysconfig/dhcpd
/etc/sysconfig/dhcpd6
/etc/sysconfig/dhcrelay
/etc/sysconfig/dhcrelay6
/usr/bin/omshell
/usr/sbin/dhcpd
/usr/sbin/dhcrelay
/usr/share/doc/dhcp-4.1.1
/usr/share/doc/dhcp-4.1.1/3.0b1-lease-convert
/usr/share/doc/dhcp-4.1.1/IANA-arp-parameters
/usr/share/doc/dhcp-4.1.1/README.ldap
/usr/share/doc/dhcp-4.1.1/api+protocol
/usr/share/doc/dhcp-4.1.1/dhclient-tz-exithook.sh
/usr/share/doc/dhcp-4.1.1/dhcpd-conf-to-ldap
/usr/share/doc/dhcp-4.1.1/dhcpd.conf.sample
/usr/share/doc/dhcp-4.1.1/dhcpd6.conf.sample
/usr/share/doc/dhcp-4.1.1/draft-ietf-dhc-ldap-schema-01.txt
/usr/share/doc/dhcp-4.1.1/ms2isc
/usr/share/doc/dhcp-4.1.1/ms2isc/Registry.perlmodule
/usr/share/doc/dhcp-4.1.1/ms2isc/ms2isc.pl
/usr/share/doc/dhcp-4.1.1/ms2isc/readme.txt
/usr/share/doc/dhcp-4.1.1/sethostname.sh
/usr/share/doc/dhcp-4.1.1/solaris.init
/usr/share/man/man1/omshell.1.gz
/usr/share/man/man5/dhcpd.conf.5.gz
/usr/share/man/man5/dhcpd.leases.5.gz
/usr/share/man/man8/dhcpd.8.gz
/usr/share/man/man8/dhcrelay.8.gz
/var/lib/dhcpd
/var/lib/dhcpd/dhcpd.leases
/var/lib/dhcpd/dhcpd6.leases

# vim /etc/dhcp/dhcpd.conf

该配置文件内容为空，在低行模式下读取样例文件 

:r /usr/share/doc/dhcp-4.1.1/dhcpd.conf.sample

然后修改后内容如下：

option domain-name "itecs.cn";
option domain-name-servers 222.222.222.222, 114.114.114.114;

default-lease-time 600;
max-lease-time 7200;

log-facility local7;

subnet 192.168.80.0 netmask 255.255.255.0 {
  range dynamic-bootp 192.168.80.101 192.168.80.200;
  option subnet-mask 255.255.255.0;
  option routers 192.168.80.254;
}

# service dhcpd

Usage: /etc/init.d/dhcpd {start|stop|restart|force-reload|condrestart|try-restart|configtest|status}

# service dhcpd configtest

# service dhcpd start

# chkconfig dhcpd on

 

3.安装tftp-server