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vpn connection disappears after 1-2 seconds

Posted on 2006-07-07
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Last Modified: 2008-02-01
I have a win xp pro at home, sp2, which I set up to connect to my work via vpn. As soon as it registers my computer on the network and places an icon of two monitors on the taskbar the icon disappears (within 1-2 seconds) and there is no message that the connection was dropped. What is causing this?
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Question by:sergenet
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by:ded9
ID: 17064398
Check if caplocks is on

Also check if there are any firewalls like norton

Ded9
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by:sergenet
ID: 17064947
Caplock not on and it makes no difference whether anti virus enabled or disabled. Remember it connects after checking user name and password. It might have something to do with getting through the router at work. I do have port 3395 enabled though.
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by:ded9
ID: 17064992
You need to forward port 500

Also allow port in windows firewalls rules in control panel

check this link
http://www.tomsnetworking.com/2003/05/20/how_to_vpn_firewall/

Also to forward ports
http://www.portforward.com/routers.htm

Additional software
Link of great vpn software
www.hamachi.cc

Ded9
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Author Comment

by:sergenet
ID: 17065212
Tried the above, same thing. As soon as it connects, it disappears.
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by:ded9
ID: 17065225
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by:rindi
ID: 17065239
This sometimes happens if your connection is too slow. What type of connection do you have (Download/upload). Upload is important for VPN's. Also, to what type of VPN are you connecting? Is it a router with builtin vpn or the stuff builtin to m$ servers which I wouldn't use if possible?
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Author Comment

by:sergenet
ID: 17065319
This is in the event viewer:
Information The user xxx successfully established a connection to xxx using the device VPN2-1.
Information  The connection to xxx made by user xxx using device VPN2-1 was disconnected.
Warning The server could not bind to the transport \Device\NetBT_Tcpip_{736B94DB-659D-4C63-AC55-0B86283734BC}.
And this: Error Event 32003  The Network Address Translator (NAT) was unable to request an operation of the kernel-mode translation module. This may indicate misconfiguration, insufficient resources, or an internal error. The data is the error code.

I am going to clear the log and see if I get the same errors when I try to connect. The same information as listed above came up in event viewer when I tried the connection. Maybe someone knows what is going on??

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by:ded9
ID: 17065327
Error Event 32003

Click the link below

http://support.microsoft.com/?kbid=293497

Ded9
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Author Comment

by:sergenet
ID: 17065365
The article does not apply to me. I already looked it up. I have an xp pro and connecting to a Netopia router at work. I have been connecting for several years. I do not remember what I did a couple of days ago. I was setting up a new vpn connection which did not work and after that the one that used to work does not work now.
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by:rindi
ID: 17065392
Is it just you connecting to that router or are others having no problems? Do you need a special client software installed for it on your PC? Have you looked for an update? Is there a private and public key used which might not be up to date anymore? Maybe the router needs a firmware upgrade, or a reset?
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by:ded9
ID: 17065417
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Author Comment

by:sergenet
ID: 17065424
I asked someone else to connect from their home. They had the same problem. So I am going to head to work and check the router. Thanks for keeping up with me.
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Expert Comment

by:ded9
ID: 17065437
Seems to be problem from the other end

Ded9
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Author Comment

by:sergenet
ID: 17066310
I found the problem at work. The NAT was enabled on the router. Disabling it solved the problem. Thanks for your help.
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by:ded9
ID: 17066565
Thanks For the points But i dont accept a Grade C. I have provided all possible solutions. It would be best if you dont provide me points. Ask the admin to refund the points.
I would Request the admin and sergenet to refund back the points



Ded9
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Netminder earned 0 total points
ID: 17075150
User resolved; points refunded and question closed.

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