SBS RWW Server Desktop connection has stopped working

After the ADSL router for this client died and was replaced this problem began.

I remotely support a client who runs a single SBS 2003 server SP2
This server runs Exchange 2003 and Sharepoint 2.0
ISA Server 2004 SP3 is installed.
Server has a single NIC.
Until 2 months ago I could connect to the Server Desktop from my home. I'd login to RWW and then use the Server Desktop link from there. Now it doesn't work.
I get the message "The client coul;d not connect to the remote computer" "Remote connections might not be enabled ... etc"
I can monitor the connection attempt on the SBS box using ISA Server Monitoring.
It lists Initiated Connection and then Closed Connection a short while later. The extra information with the latter has an error FWX_E_ABORTIVE_SHUTDOWN 0x80074e21.
I've looked this up on isaserver.org, but the article there only suggests that the listener is not running. The listener is running becuase if I try this conmnection from a client on the same LAN as the server it works fine.
ComputerFundiAsked:
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James MontgomeryCommented:
Chances are port 4125 have not been setup to forward following the replacement of the router.
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ComputerFundiAuthor Commented:
Thanks. Don't know why I didn't double-check the settings before.
I had setup a service called RWW for UDP port 4125 and placed it in the forwarding table (on this router setting up a service and then adding to the forward ports table are two separate steps). I had also setup service RWW1 for TCP 4125, but had omitted to place that service in the forwarding table. Now it's in the forwarding table and I can get at my server desktop again.

Glad it was a simple solution, wish I'd asked earlier!
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