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SBS 2003 PPtP VPN Default Gateway not Being Assigned to Client

Posted on 2011-04-30
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Last Modified: 2012-05-11
We're experiencing an issue similar to question ID 24338287.

We have an SBS 2003 server with PPtP VPN enabled.  We can connect to the server remotely using the VPN connection but the default gateway that gets assigned is 0.0.0.0 .  The other strange thing is that a WINS server is being assigned but WINS is disabled on the server.  Here is the client ipconfig:

   Connection-specific DNS Suffix  . : ourdomain.local
   Description . . . . . . . . . . . : VPN1
   Physical Address. . . . . . . . . :
   DHCP Enabled. . . . . . . . . . . : No
   Autoconfiguration Enabled . . . . : Yes
   IPv4 Address. . . . . . . . . . . : 192.168.0.106(Preferred)
   Subnet Mask . . . . . . . . . . . : 255.255.255.255
   Default Gateway . . . . . . . . . : 0.0.0.0
   DNS Servers . . . . . . . . . . . : 192.168.0.254
   Primary WINS Server . . . . . . . : 192.168.16.2
   NetBIOS over Tcpip. . . . . . . . : Enabled

The server has a single NIC with an address of 192.168.0.254.  The client is Windows 7 Pro.

The symptom we are seeing is that we can't access network resources by name, only IP address.
The DNS server works perfectly for computers behind the router.
The router is a Linksys BEFSR81 configured to forward port 1723 and VPN passthrough is enabled.

Any help would be appreciated.
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Question by:Sabbec
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Expert Comment

by:dmessman
ID: 35497369
what you're describing is normal behavior.  Are you having any functionality issues?  Do you have a split tunnel or not?  This is configured by unchecking use default gateway on remote network in the TCP/IP configuration of the VPN connection.  Here is a screen shot of me being connected to one of my client's SBS 2003 servers via VPN.  THis connection works fine with a split tunnel or routing through the server for internet access.

 VPN connection
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Author Comment

by:Sabbec
ID: 35497447
Thanks for the response dmessman.

The VPN connection is not split-tunnel.

The functionality issue is that, intermittently, I can't access resources by name, only by IP address.  For example, sometimes I can ping the server by name, sometimes not.

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dmessman earned 2000 total points
ID: 35506464
I'm familiar with what you are talking about.  Is there any pattern that you can detect?  For example - you can ping by NETBIOS name with XP computers, but not Win 7 computers?  At one of my clients on an SBS 2008 machine where they VPN into the SBS 2008 machine, I found the same issue - inconsistency with resolving NETBIOS names.  My low tech solution?  Start mapping drives with the IP address - not the NETBIOS name.  Not a solution, just a workaround that has worked indefinitely.

But as far as your noted issue of the gateway not showing or being assigned - that's a non-issue.
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Author Comment

by:Sabbec
ID: 35511663
That's what I've ended up doing - changing everything to use IP addresses instead of hostnames.  I thought the problem was related to the gateway address being 0.0.0.0.

Thanks for your help.
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