to enable a "saved" wifi connection from terminal follow
https://wiki.maemo.org/Phone_control...ved_connection

get the ip via ifconfig

no telnet but:

if you have ssh server installed you can just log in or remote mount it via sshfs.

if not you can install via https://wiki.maemo.org/SSH

Otherwise you may use something from
http://pentestmonkey.net/cheat-sheet...ll-cheat-sheet

depending on what you have installed.