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Can't connect to remote desktop through Remote Web Workplace

Posted on 2009-05-01
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I have just setup RWW. I can connect to RWW through the browser (both internally and externally), however when i click on a computer to connect to the computer through Remote Desktop i just get a blank white screen. Eventually a message comes up saying "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 again later. if the problem continues to occur, contact your administrator."

I've made sure that 'allow remote connections' has been enabled in the remote tab of system properties on each computer. I'm wondering what else is preventing this. I can remote desktop to each computer from inside the store by just using the RDP client in windows, however not through the RWW website link.

Many thanks.
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Question by:James Parsons
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by:blue-screen
ID: 24284906
From the RWW Wikipedia article:

RWW works by proxying Remote Desktop via port 4125/tcp on the SBS machine to the usual RDP port (3389/tcp) on the internal client or server machine being reached. But as a security measure, 4125/tcp is not normally listening at all (attempts to reach it would produce "Connection refused" errors), and it listens for connections only when a user has requested a session via the web GUI.

Maybe you have a 3rd party firewall blocking port 4125?
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by:James Parsons
ID: 24305903
Okay, i've checked the SBS server. I have no third party firewall running on that machine and the windows firewall is disabled. I've got port 3389 and 4125 forwarded on the router to the SBS server. Any other thoughts?
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James Parsons earned 0 total points
ID: 24307954
Okay, so i actually figured out what the issue is. RRAS wasn't setup properly because Windows Server 2003 SP2 was installed the SBS box, which i guess can cause issues. I removed Service Pack 2 and reran the 'Configure Remote Access Wizard', which in turn configured RRAS correctly, opened up the correct ports and now allows RDP through RWW.
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by:Rob Williams
ID: 24310794
Interesting as RWW does not depend on RRAS. RRAS can actually be completely disabled if it is not running ISA and RWW will work fine. May have more to do with re-running the CEICW, and possibly re-installing SP2.

>>"I've got port 3389 and 4125 forwarded on the router to the SBS server. "
Also RWW does not need 3389 forwarded, but it does need 443 and 4125. If UPnP is enabled on the router, the CEICW would have fixed this as well.
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