Connecting via ShrewSoft VPN client means no LAN internet access (Windows 7 64 bit) - any advice please?

Posted by iwishiknewmoreaboutnetworking on Super User See other posts from Super User or by iwishiknewmoreaboutnetworking
Published on 2011-04-26T16:21:53Z Indexed on 2012/03/20 11:32 UTC
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I have a Windows 7 64 bit desktop machine which is connected to a LAN.

I recently installed ShrewSoft VPN client v 2.1.7 on my machine so that I can connect to a license server hosted by my customer. They are running a Cisco VPN server and I originally tried (unsuccessfully!) to use the Cisco VPN client for Windows 64 bit but the default gateway wasn't being configured correctly after loading in my pcf file. Using ShrewSoft I am able to import the same pcf file, and successfully connect to the machine I need to using the VPN client software. The client machine I need to connect to has IP address 1.52.90.33.

The problem is that when I am connected to the customer network using the VPN client application (and after a few minutes) I lose my LAN internet connection. I can only presume that this is because, by default the ShrewSoft VPN client application automatically tunnels all traffic through the VPN connection. I know there is an option to switch off the "Tunnel All" option on the Policy tab of the application and enter a Remote Network Resource (to "Include" or "Exclude") as "Address" and "Netmask" IP addresses however I am not sure what I need to enter here.

Here is my ipconfig output before connecting to the VPN (with suffixes blanked out):

Windows IP Configuration


Ethernet adapter Local Area Connection:

   Connection-specific DNS Suffix  . : ***.***
   Link-local IPv6 Address . . . . . : fe80::8de3:9dbe:393a:33ba%11
   IPv4 Address. . . . . . . . . . . : 150.237.13.17
   Subnet Mask . . . . . . . . . . . : 255.255.255.0
   Default Gateway . . . . . . . . . : 150.237.13.1

Tunnel adapter 6TO4 Adapter:

   Connection-specific DNS Suffix  . : ***.***
   IPv6 Address. . . . . . . . . . . : 2002:96ed:d11::96ed:d11
   Default Gateway . . . . . . . . . : 2002:c058:6301::c058:6301

Tunnel adapter Local Area Connection* 9:

   Connection-specific DNS Suffix  . :
   IPv6 Address. . . . . . . . . . . : 2001:0:4137:9e76:2cf9:38c4:6912:f2ee
   Link-local IPv6 Address . . . . . : fe80::2cf9:38c4:6912:f2ee%12
   Default Gateway . . . . . . . . . :

Tunnel adapter isatap.***.***:

   Media State . . . . . . . . . . . : Media disconnected
   Connection-specific DNS Suffix  . : ***.***

Here is my route print output before connecting to the VPN:

===========================================================================
Interface List
 11...20 cf 30 9d ec 2a ......Realtek RTL8168D/8111D Family PCI-E Gigabit Ethern
et NIC (NDIS 6.20)
  1...........................Software Loopback Interface 1
 14...00 00 00 00 00 00 00 e0 Microsoft 6to4 Adapter
 12...00 00 00 00 00 00 00 e0 Teredo Tunneling Pseudo-Interface
 13...00 00 00 00 00 00 00 e0 Microsoft ISATAP Adapter #2
===========================================================================

IPv4 Route Table
===========================================================================
Active Routes:
Network Destination        Netmask          Gateway       Interface  Metric
          0.0.0.0          0.0.0.0     150.237.13.1    150.237.13.17      2
        127.0.0.0        255.0.0.0         On-link         127.0.0.1    306
        127.0.0.1  255.255.255.255         On-link         127.0.0.1    306
  127.255.255.255  255.255.255.255         On-link         127.0.0.1    306
     150.237.13.0    255.255.255.0         On-link     150.237.13.17    257
    150.237.13.17  255.255.255.255         On-link     150.237.13.17    257
   150.237.13.255  255.255.255.255         On-link     150.237.13.17    257
        224.0.0.0        240.0.0.0         On-link         127.0.0.1    306
        224.0.0.0        240.0.0.0         On-link     150.237.13.17    257
  255.255.255.255  255.255.255.255         On-link         12

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