vpn issues, can't connect

[madams9]

I have a T40 running XP (all patched) and trying to use windows VPN connection to my company. When I try to connect I get "verifying username and password" and than it just hangs (internal wireless and wired).

I recently upgraded my hardrive so it is a fresh install. With the upgrade I also upgraded the drivers and firmware. It worked before the upgrade so I assume I upgraded the wrong drivers/firmware or missed something. Any ideas?

[madams9]

I still had my old drive laying around so I put it back in and I still can't use VPN. I assume it s firmware or something. Can I roll back firmware?

[DIGITALgimpus]

It's extremely unlikely to be firmware or any hardware.

Most likely a firewall or a problem on the receiving end of the vpn.

[basketboy]

madams9, are you using zonealarm as your firewall? If so, you may set the internet security level from high to med. and have another try.

[madams9]

Note a firewall problem. That is all shut off.

Even the old drive, which it worked with, now doesn't work.

[Roy_W]

Some questions spring to mind ..

1 : Is it a PPTP or an IPSEC VPN.

2 : If you use VPN(IPSEC) certificates, has your certificate expired .

3 : Have you changed any of your routeurs/Wifi Box's setting recently.

4 : Ask your administrator if he or the company firewall/vpn server has blocked your IP address/machine.

5 : Do a live test whilst talking to the Administrator on the telephone to determine if the company firewall/VPN Server is throwing up any errors/messages.

6 : Has your company or ISP blocked any ports/protocols recently ie IP Protocol GRE, 1701, 1723.

[madams9]

It is PPTP. I have another machine in the house and the VPN works just fine. I tried talking to the admin but that did help. It really doesn't make alot of sense

[Roy_W]

1 : Do all the other standard services work on the Thinkpad ? Ping, Telnet, Tracert etc....

2 : Can you enter the VPN from another location other than at home.

3 : Try swapping the Thinkpad IP address with the other machine at home, just in case the problem is coming from NAT. ( Obviously you have to unplug the other machine or change its address ).

4 : Try resetting your TCP stack with the following command
netsh int ip reset tcpip.txt.

5 : Try reseting the ARP table
arp -d *.

6 : Completely Uninstall any firewall software whilst perfoming these tests.

7 : Do you use NAT on your home router, Is one of your home machines designated as a DMZ.

8 : Does your home router use Port Mapping.

9 : Have you tried reseting your home router ( Make a backup of the router config beforehand.