VPN Client cannot access the Internet?

  • From: Brian Hoover <brianh@xxxxxxxxx>
  • To: "'isalist@xxxxxxxxxxxxx'" <isalist@xxxxxxxxxxxxx>
  • Date: Tue, 23 Apr 2002 13:47:18 -0400

Many thanks to the contributors to this list and to ISAServer.org.

I have set up a lab to simulate an enterprise network with back to back ISA
servers.  After establishing a VPN tunnel into the network the client can no
longer access the Internet.  When I do trace route to any site the the
astericks come back on the first hop.  If I disconnect the VPN connections
all is well again.  I am using PPTP as I have not set up CertSrv yet.

Can anyone explain this behavior?  Does the IP stack lock down to point only
to the ISA server to protect from the client being hacked and an intruder
gaining an autenticated path to the LAN?

Thanks,

Brian Hoover
I.T. Manager
Vidar Systems Corporation

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