cent0s6.5telnet install

1.在centos6.5上安装telnet服务
download  from https://centos.pkgs.org
rpm -ivh xinetd-2.3.14-40.el6.x86_64.rpm
rpm -ivh telnet-server-0.17-48.el6.x86_64.rpm

安装客户端
rpm -ivh telnet-0.17-48.el6.x86_64.rpm

2.修改配置 /etc/xinetd.d/telnet
cat /etc/xinetd.d/telnet
# default: on
# description: The telnet server serves telnet sessions; it uses \
#    unencrypted username/password pairs for authentication.
service telnet
{
    flags        = REUSE
    socket_type    = stream        
    wait        = no
    user        = root
    server        = /usr/sbin/in.telnetd
    log_on_failure    += USERID
    disable        = yes
}
把disable = yes   修改为  disable = no


3.启动xinetd服务
service xinetd status
service xinetd start

service xinetd restart

service xinetd stop

4.添加用户
useradd ftpuser
passwd ftpuser

用wirshark观察TELNET明文传送用户名密码