Cool you did a loopback thing. I am working with a different method right now, one which uses a Lantronix serial device server. I figure since I'm running my own serial code I can do without AT commands and stuff, but the problem is how to host the UDS. See, TELNET to port 23 brings up a login to configure the UDS, not a direct serial tunnel. There is another port you connect to in order to make that work, and it's kinda confusing. The second problem is that the network I'm on right now is not my own, and as such I am not allowed to have port forwarding etc. Which is a pain. And if I'm going to use an old modem or even TCPSER I'm going to have to write my code with AT commands, which I really, REALLY do not want to do at all.

Anyone here use dynamic DNS places at all? Can I host my server with one of them if I don't have port forwarding? And how in the world would I make it work with a device which doesn't allow me to install things onto it or even allow PPP connections?