VPN connection does not work using WinXP Pro with firewall on or o

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I have a new Dell laptop running Win XP Pro which I connected to 2000 advance
server via vpn from my house. I take computer to office (not where 2000
advance server is located) I connect to internet via Bellsouth westell router
but when acessing VPN computer can not connect althought there are 5 other
computer running win2000 pro that connect without any problem. I turn off
firewall in XP pro computer and still can not make a VPN connection. After
trying Dell support, they do not support VPN issues, I was stranded with
Bellsouth which they are very slow to act.

This computer has wireless connection and I found a Belkin pre-n connection
which I connected wireless to and with XP firewall on try to connect to VPN
and IT WORKS!

My question is: am i using the wrong router at this location or Bellsouth
has to upgrade my line to handel Win XP firewall. Do I need to open any
additional ports? which ones?
 
Normally the firewall blocks only inbound traffic. So it may be nothing to do with firewall. Do a simple test. Can you telnet port 1723?

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
I have a new Dell laptop running Win XP Pro which I connected to 2000 advance
server via vpn from my house. I take computer to office (not where 2000
advance server is located) I connect to internet via Bellsouth westell router
but when acessing VPN computer can not connect althought there are 5 other
computer running win2000 pro that connect without any problem. I turn off
firewall in XP pro computer and still can not make a VPN connection. After
trying Dell support, they do not support VPN issues, I was stranded with
Bellsouth which they are very slow to act.

This computer has wireless connection and I found a Belkin pre-n connection
which I connected wireless to and with XP firewall on try to connect to VPN
and IT WORKS!

My question is: am i using the wrong router at this location or Bellsouth
has to upgrade my line to handel Win XP firewall. Do I need to open any
additional ports? which ones?
 
Robert, I do get a command windows (just like cmd) with a blinking courser.
the blue header of windows indicates telnet IP#. is this means am connected?
Thanks, again.
 
Yes, you have good connection to the VPN server. What's the error code when VPN? Then check this link for troubleshooting,

VPN error code VPN Error Codes · System Error Codes · Windows Event ID · Internal Errors. Case Studies ... Receiving VPN error 619 while connecting to a VPN via SBC ...
www.chicagotech.net/vpnerrors.htm


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
Robert, I never got the telnet promt>. It came back to windows promt>

JM
 
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