stange network problem

[bzburr]

Hi all

stange pc network problem here


last night my XP Pro box decided it didnt want to connect to the
internet via the router

it dual boots to Ubuntu, so i tried than and Ubuntu connects fine - so
theres a problem with my XP setup


I can "see" and configure the router via its interface from my XP box,
so there is network things working locally and local filesharing works
too.

My GF's PC and iBook both connect to the internet through the router
without issues.

However (and this is the strange bit)
I used to work at a firm which set me up with a VPN to their network,
so i tried running that on my XP Pro box ...and bugger me if it doesnt
work!

i.e. i cannot connect "normally' in XP,
but if i run the VPN it works fine, but i am connecting to my old
work's network!


does anyone have any suggestions/ideas as to what might be broken and
how to fix it?

Buzz

 

[Doug Sherman [MVP]]

It sounds like routing is working, but to make sure:

1. ping 4.2.2.1 If you get a reply, then Internet routing is working.

2. ping google.com If the name is resolved to an IP address, then DNS is
working.

3. If #1 and 2 both work, then the problem is most likely browser settings
or proxy/security software.

Doug Sherman
MCSE, MCSA, MCP+I, MVP

 

[Chuck]

Hi all

stange pc network problem here


last night my XP Pro box decided it didnt want to connect to the
internet via the router

it dual boots to Ubuntu, so i tried than and Ubuntu connects fine - so
theres a problem with my XP setup


I can "see" and configure the router via its interface from my XP box,
so there is network things working locally and local filesharing works
too.

My GF's PC and iBook both connect to the internet through the router
without issues.

However (and this is the strange bit)
I used to work at a firm which set me up with a VPN to their network,
so i tried running that on my XP Pro box ...and bugger me if it doesnt
work!

i.e. i cannot connect "normally' in XP,
but if i run the VPN it works fine, but i am connecting to my old
work's network!

Buzz,

If you have any type of network problem, and you have a VPN client on the
computer involved in the problem, you'll have to un install the VPN client to
diagnose the problem. VPN clients are notorious here for causing problems with
local networking.

The nature of a VPN requires that local networks be restricted, if not
eliminated. A VPN client creates a tunnel thru the Internet to the VPN server,
and all traffic (including name resolution traffic, which is crucial to local
networking) goes thru the tunnel. Depending upon the VPN client, even after you
turn the tunnel off, full local networking may not be restored. There may be
settings in the VPN client that will let you mitigate the problem, but you'll
have to find out about any such from the folks who support the VPN product in
question.