VPN Connection issue - Cant connect to another VPN until a restart

[Rich]

Hi There,

I have a weird VPN issue that I cannot resolve.
Hopefully someone out there has had a similar issue.

System Details
----------------
- Windows XP SP3
- Using the Windows XP built in VPN client
- Ethernet connection built onto Motherboard - ADMtek AN983 10/100Mbps

Problem Scenario
---------------------
- Turn on PC, launch and log-in to Windows XP.
- Login to VPN-a. Authenticated Successfully. Can connect to PC's and
network devices.
- Log off VPN-a.
- Login to VPN-b or c or d,.... Authenticated Successfully. Cannot connect
to PC's and network devices.
- Log off VPN-b or c or d,....
- Log back in to VPN-a. Authenticate Successfully. Can browse network &
devices.

- Restart PC, launch and log-in to Windows XP.
- Login to VPN-b. Authenticated Successfully. Can connect to PC's and
network devices.
- Log off VPN-b
- Login to VPN-a or c or d,.... Authenticated Successfully. Cannot connect
to PC's and network devices.
- The cycle begins...

The first VPN connection I connect to works every time all day, can logon
and off as many times as I like. But when I try any other VPN connection it
will not work. I have to restart the PC in order to connect to another VPN
connection and the cycle starts again. Its like something doesnt clear from
the first VPN connection. Even if I log off Windows XP and log back in I can
still only connect to the 1st VPN. Its only on a PC reboot that it fully
resets or clears the connection.

Even though I authenticate on the 2nd VPN connection the send/received bytes
will get to a certain level and just stick, its a very low level like
500bytes but isnt the same number of bytes each time.

I have another PC same model etc.. and this logs onto the same VPN's without
having to restart the PC after the 1st VPN connection.


Many Thanks,
Rich.

 

[Rich]

Thank you Bob,

I will try this on Monday when I am back at work and let you know the outcome.

Thanks
Rich.

 

[Rich]

Hi Bob,

Forgot to add I am on a Domain, but so is the other computer that works OK.

Here are my results.
I have had to hide a few things for obvious reasons.

PPP adapter VPN-a:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : WAN (PPP/SLIP) Interface
Physical Address. . . . . . . . . : 00-53-45-00-00-00
Dhcp Enabled. . . . . . . . . . . : No
IP Address. . . . . . . . . . . . : 192.168.30.2
Subnet Mask . . . . . . . . . . . : 255.255.255.255
Default Gateway . . . . . . . . . : 192.168.30.2
DNS Servers . . . . . . . . . . . : xx.xxx.0.66
xx.xxx.0.67
C:\>nslookup
*** Can't find server name for address 192.168.127.2: Non-existent domain
*** Can't find server name for address 192.168.127.2: Non-existent domain
*** Default servers are not available
Default Server: UnKnown
Address: 192.168.127.2

Logged off VPN-a

Logging onto VPN-b - confirmed cannot connect to any devices.

PPP adapter VPN-b:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : WAN (PPP/SLIP) Interface
Physical Address. . . . . . . . . : 00-53-45-00-00-00
Dhcp Enabled. . . . . . . . . . . : No
IP Address. . . . . . . . . . . . : 10.0.0.224
Subnet Mask . . . . . . . . . . . : 255.255.255.255
Default Gateway . . . . . . . . . : 10.0.0.224

C:\>nslookup
*** Can't find server name for address 192.168.127.2: Non-existent domain
*** Can't find server name for address 192.168.127.2: Non-existent domain
*** Default servers are not available
Default Server: UnKnown
Address: 192.168.127.2

Only thing I noticed is I dont have a DNS when connecting to VPN-b (but this
could be genuine I'd have to reboot to confirm).

 

[Rich]

Hi Bob,

Thanks for the resources. I'll have a read over them.

Unfortunately because the VPN's servers are not our property I cant modify
them. That said I still think its my PC as my Vista laptop and other PC
connects to the same VPN's no problem.

Thanks
Rich