That's the telnet command, telnet has a specific use, but it's very good for testing TCP connections if you tell it to use a different port number.
Before it's worth bothering with things between the two networks we need to get it talking to things on the local network (aka the workstation).
If all the obvious things are done we need to find out if it can't create the connection because of something on the workstation, or because of something on the server. That's where the packet sniffer comes in, running that on the server will let us see if anything is getting to the server.
If you want to try it you can download it here:
http://www.wireshark.org/I want to warn you that I need to go to bed in about 45 minutes, work in the morning and such. Nothing personal :)
Chris