RV110W telnet problems

I have Comcast Business internet, an SMC modem in "passthru" connected to the RV110W which in turn connects to my network. I have one server on the network that I want to telnet to. I have set-up port forwarding port 23 to 192.168.1.xx (server). On the internal LAN if I use a command prompt and telnet to the server, every thing is fine. If I try to access the server from a remote, It won't connect on port 23." could not open connection to the host on port 23". Where am I going wrong. I need the router because I have one static IP. On my old DSL connection everything was fine but I needed to switch because of mail server problems.

I have just created my login, and the other logins worked fine earlier. Nothing has been changed on the machine that I am aware of and a comprimise is highly unlikely in this situation. All logins freeze at the same place on the telnet login. Would it be possible that I need to create the user with admin rights? If so, how?
Also, The server is running a service of which I cannot break to shell ( chances are I just don't know how yet). Since I an in the application console, could that be a cause?
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