I have recently had an issue with
port forwarding on a
Draytek Vigor 2820n router. The job that I was working on was to configure port forwarding for
Remote Web Workplace (RWW) through to a Vista Business PC. To do this you need to forward ports 443 and 4125 through to the SBS 2003, as well as configure RWW on the server, including the appropriate
IIS security and permissons. This is normally straight forward!
The problem started when I finished the setup and tested locally using an internal URL (http://server/remote). This worked as expected and allowed me to logon to the client PC. I then tested from a remote PC and got an error message (
"The Client could not connect to the remote computer. Remote conenctions might not be enabled...."). I recheck IIS and the permissons looked correct. This lead me to believe the issue was with the router!
I started by checking the router firmware (v3.1.1), and reflashing to the lastest version 3.1.3 - this made no difference. I then swapped out the 2820 for a brand new router, running firmware 3.1.3 - this made no difference either. Finally I swapped the 2820 for an old 2800. Port forwarding then started to work.
I have had similiar issues with 590x port forwarding for VNC. I could resolve with a simple disable/enable on each VNC entry.
I have reported this issue to Draytek UK - hopefully it will be resolved in the next firmware update.