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== Want to install telnet? =={{:CentOS_Linux_Distribution_Enable_Telnet}} telnet server is not recommended for security reasons, plain text over tcp/ip # yum install telnet telnet-server -y How about telnet client? It is not installed by default. #yum intall telnet -y The package is Package telnet.i686 == Enable TELNET as ROOT on GUEST CentOS system == Simply edit the file /etc/securetty and add the following to the end of the file: pts/0 pts/1 pts/2 pts/3 pts/4 pts/5 pts/6 pts/7 pts/8 pts/9 This will allow up to 10 telnet sessions to the server as root. note: Just one is probably fine ref: http://www.idevelopment.info/data/Unix/Linux/LINUX_TelnetFTPAsRoot.shtml