安装tftp-server
1、安装tftp-server
      [root@localhost weijie]# yum install -y tftp-server
      Loaded plugins: fastestmirror, refresh-packagekit, security
      Running Transaction
        Installing : tftp-server-0.49-8.el6.i686                                  1/1 
        Verifying  : tftp-server-0.49-8.el6.i686                                  1/1 
      Installed:
        tftp-server.i686 0:0.49-8.el6                                                 
      Complete!

2、打开配置文件“/etc/xinetd.d/tftp“ 
      [root@localhost weijie]# gedit /etc/xinetd.d/tftp 
      service tftp
      {
             socket_type = dgram
      protocol = udp
      wait = yes
      user = root
      server = /usr/sbin/in.tftpd
      server_args = -s /var/lib/tftpboot          //默认目录
      disable = no                                //是否启动
      per_source = 11
      cps = 100 2
      flags = IPv4
      }

3、修改防火墙，允许udp端口号69
      [root@localhost weijie]# gedit /etc/sysconfig/iptables
      -A INPUT -m state --state NEW -m udp -p udp --dport 69 -j ACCEPT

4、重启服务
      [root@localhost weijie]# service iptables restart               //重启防火墙
      iptables：将链设置为政策 ACCEPT：filter nat                [确定]
      iptables：清除防火墙规则：                                 [确定]
      iptables：正在卸载模块：                                   [确定]
      iptables：应用防火墙规则：                                 [确定]
      iptables：载入额外模块：nf_conntrack_ftp                   [确定]
      You have new mail in /var/spool/mail/root
      [root@localhost weijie]# service xinetd restart              //重启xinetd，tftp依赖xinetd服务
      停止 xinetd：                                              [确定]
      正在启动 xinetd：                                          [确定]

5、测试
      [root@localhost weijie]# tftp 192.168.1.8           //连接服务器
      tftp> get 11.c                                           //获取文件
      tftp> quit                                                //退出
      You have new mail in /var/spool/mail/root
      [root@localhost weijie]# ls                           //查看文件，已经获取到
      1   11.c  1.zip  2.c.bz2  4.c  6.c~  rec000012.c.bz2
      1.  1.c   2.c    3.c      5.c  col   res.zip