is my router / switch forwarding port 3389 for remote desktop?
Posted on 2006-05-15
I've had a problem that's finally just confused me.
I'm running a network with an SBS 2003 server and 7 Win XP Pro machines. The internet connection is ADSL and comes in via a CISCO 800 router. It then goes through a Surecom EP-816x switch to all the computers.
Currently i've set up remote desktop on the sbs server and it's no problem connecting via remote desktop from another computer on the LAN. However, when I try to connect externally from home, i get :
"The client could not connect to the remote computer. Remote connections might not be enabled or the computer might be too busy to accept new connections. It is also possible that network problems are preventing your connection. Please try your connection again later. If the problem continues to occur, contact your administrator."
I'm assuming my problem isn't with the way i've set up remote desktop on the server and i've checked that it is listening on port 3389.
The problem is I think that the ISP owns the router and i dont have access to it, i wrote to them saying please forward these ports, and they replied with:
"We provide you an ADSL service, with no NATing running…ie we pass all traffic through. We don’t block any traffic.
More importantly we don’t do any Port forwarding on the routers we provide…in this case it is really just an NTU. You will need to do this on your firewall."
So if that's the case I guess that the Surecom switch is my problem? I have no idea whether i can access it via an IP address and have no documentation or manuals on it =S would there be some way to find if it has an ip?
oh and btw, remote desktop is enabled on all computers so perhaps the switch doesn't know where to pass a port 3389 request, however at night, when only the server is on, i get the same error.
Any suggestions / comments would be greatly appreciated.