VPN/DNS issue -- more info - disregard earlier post

[foo]

Hello,

I have a laptop running Win XP SP2. I have the folowing problem:

I have a VPN set up so that I can connect to my departmental network
from home and other locations. My home connection is through an ADSL
modem/router. I also use the laptop at another office location where
I
get a static IP over a T3 line.

The VPN is set up so that internet traffic goes through the internet
connection, and not through the VPN (split tunneling).


I have the following problem: When I connect to the VPN (from either
of
the above locations), all name queries seem to be automatically routed
to the PPP interface of the VPN. Even when I hardwire the DNS server
to be the "correct" DNS server for the home network on the ethernet
interface, dns queries don't get answered: they get routed to the PPP
interface, which I assume sends them to the VPN. OTOH, other packets,
eg, ping or http by ip address, get routed correctly.

(I used a sniffer to verify this)
Also, there is no problem with connecting to the intranet resources
(including printer).

No other user of the same VPN has this problem. I also have a second
computer, with Win 2K, that doesn't display this problem when
connecting to the VPN: all packets get routed correctly.

Any thoughts? I am a bit stuck. Thank you very much!
Vasilis

 

[Robert L [MVP - Networking]]

As mentioned in you early post. it seems to me the VPN client uses office DNS. To confirm it, use nslookup.

Bob Lin, MS-MVP, MCSE & CNE
Networking, Internet, Routing, VPN Troubleshooting on http://www.ChicagoTech.net
How to Setup Windows, Network, VPN & Remote Access on http://www.HowToNetworking.com
Hello,

I have a laptop running Win XP SP2. I have the folowing problem:

I have a VPN set up so that I can connect to my departmental network
from home and other locations. My home connection is through an ADSL
modem/router. I also use the laptop at another office location where
I
get a static IP over a T3 line.

The VPN is set up so that internet traffic goes through the internet
connection, and not through the VPN (split tunneling).


I have the following problem: When I connect to the VPN (from either
of
the above locations), all name queries seem to be automatically routed
to the PPP interface of the VPN. Even when I hardwire the DNS server
to be the "correct" DNS server for the home network on the ethernet
interface, dns queries don't get answered: they get routed to the PPP
interface, which I assume sends them to the VPN. OTOH, other packets,
eg, ping or http by ip address, get routed correctly.

(I used a sniffer to verify this)
Also, there is no problem with connecting to the intranet resources
(including printer).

No other user of the same VPN has this problem. I also have a second
computer, with Win 2K, that doesn't display this problem when
connecting to the VPN: all packets get routed correctly.

Any thoughts? I am a bit stuck. Thank you very much!
Vasilis

 

[Guest]

On the PPP connection, go to the properties, Network tab, then the IP Protocol.
Click properties, then advance
Uncheck the "Use Default Gateway"


this will allow the local internet browsing to occur. Only traffic for the
dial up connection will go over the vpn dial up connection.

Also, encrption has caused time out issues when connecting to router such as
dlinks, linksys VPN that are built in.

hope that helps.... tim