23 Jun 2008

Draytek Vigor 2820n port forwarding issue

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.

4 comments:

Dean132 said...

I had this issue it drove me insane for 2 days. THe fix was that the 2820n router has a setting in management to allow management from the internet, disable this and it works!!! I think the router was trying to redirect the HTTP and HTTPS traffic to itself for management rather than forwarding it on.

Abdulla said...

Hi all , I have 2820n Drytek and I have the same problem, can't forward port 80 to my windows 2003 server , I've just updated to latest , and tryied also to disable internet management, and changed managments port . but still !!
I've opened ticket in Draytek and still opened in the last 4 months , and their support loggin daily to my router, and I gave him access to my servers to test. as soon they fix this i will post update.

Anyone fixed this please write your firmware version.

Goodluck

sand man said...

So how did you resolve this problem????
Kind Regards

SPECIALS said...

Not yet, seems my ISP block 80