yum -y install telnet-server telnet
vim /etc/xinted.d/telnet
disable = no
vim /etc/pam.d/remote
#auth required pam_securetty.so
将‘pts/1’添加到/etc/securetty中，即可实现telnet的root用户登录
Centos6.5 telnet wireshark
原文：http://www.cnblogs.com/ruiy/p/4355480.html
