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Cannot map drive over VPN  on SBS 2003

Posted on 2009-05-12
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Last Modified: 2012-05-06
I just rebuilt my SBS 2003 server and everything is working with the except for one thing:  I cannot map a drive via our hardware VPN.  The odd thing is that I can Remote Desktop to the server without any difficulty.

Looking at the server event viewer: DCOM 10001: DCOM was unable to communicate with the computer "IP"  using any of the configured protocols.

I cannot add the remote machine via ConnectComputer:

You are not authorized to view this page
The Web server you are attempting to reach has a list of IP addresses that are not allowed to access the Web site, and the IP address of your browsing computer is on this list.

Please try the following:
 * Contact the Web site administrator if you believe you should be able to view this directory or page.

HTTP Error 403.6 - Forbidden: IP address of the client has been rejected.
Internet Information Services (IIS)

Technical Information (for support personnel)

    * Go to Microsoft Product Support Services and perform a title search for the words HTTP and 403.
    * Open IIS Help, which is accessible in IIS Manager (inetmgr), and search for topics titled About Security, Limiting Access by IP Address, IP Address Access Restrictions, and About Custom Error Messages.

I added the IP of the remote machine to IIS to allow access.

What can I try next?
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Question by:sgarson1
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Expert Comment

by:PaperTiger
ID: 24374505
Would you elaborate how you map your drive over hardware VPN (what is that?)
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Author Comment

by:sgarson1
ID: 24375083
I have a Sonicwall hardware VPN, with hardware on both sides of the tunnel.  Remote is 192.168.0.0.  HQ is 172.25.25.0.  Everything was fine before server rebuild.

Remote can RDP into server and then map a remote drive from the server.

When mapping, I use "log on with another name" with domain\username and password.  I try with IP 172.25.25.110\sharename and \\bcc-server\sharename.
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Expert Comment

by:PaperTiger
ID: 24375624
Still not clear. do you go to Windows Explorer, Tools, Map Network Drive to do this?
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Author Comment

by:sgarson1
ID: 24375953
Yes
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Accepted Solution

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PaperTiger earned 500 total points
ID: 24376379
In that case, how did you get the error you listed in your original question and what does it have anything to do with IIS? I am confused.

Check to see if your server's firewall has exception for File and Printer sharing. usually that's the problem.

if that's  not the case, you really need to clarify my question here.
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Author Closing Comment

by:sgarson1
ID: 31580818
It was the client firewall
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