Binary package “putty” in ubuntu disco

Telnet/SSH client for X

 This is the Unix port of the popular Windows SSH client, PuTTY. It supports
 flexible terminal setup, mid-session reconfiguration using Ctrl-rightclick,
 multiple X11 authentication protocols, and various other interesting things
 not provided by ssh in an xterm.
 .
 Pageant is an SSH authentication agent, and a tool for communicating with
 an already-running agent.