I don't have a pocket PC (my PDA is a Zaurus, wife's is a Visor), but I just did a quick search and found these -
telnet:
http://www.globalshareware.com/Utili...-Pocket-PC.htm
(Ruksun - the maker of Telnet Force - has always done some great PDA software, based on my past experiences with them)
ssh:
http://www.pocketpcthoughts.com/foru...pic.php?t=9695 (GNU - free)
And this one looks VERY freaking cool... although it's a rather pricey -
http://www.sonicmobility.com/
edit - I should have looked around more... another good link
http://www.pocketpcmag.com/enc/subcat.asp?cat=68