Conversation

yum info rsh-server

The rsh-server package should be installed to enable remote access from other machines

No, no it should not.

yum info talk

Install talk if you'd like to use talk for chatting with users on different systems.

or… maybe don't do that.

yum info telnet-server

Telnet is a popular protocol for logging into remote systems over the Internet.

n…n-no.