2009-02-28 02:59:59 UTC
GT.M uses port 22 and SSH for telnet connections. PuTTY is a free, downloadable telnet client. It is not as good as some of the other clients like Smarterm and Kea! but it does the job and it fairly configurable. Your IP address has to be a public address and not a local IP. If you are using a router, you will have to use port forwarding where anything that comes in on port 22 with SSH will be sent to the server IP.
Good luck.