Server Fault is a question and answer site for system and network administrators. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

This is a complete new one for me.

We've got a VPN (cert based) running happily on the domain. However after a while of working ok (and usually after I get to home to the other side of town) I find I cannot connect to the VPN anymore.

The following error occurred in the Point to Point Protocol module on port: VPN1-125, UserName: . Negotiation timed out.

Obvioulsy I've googled a bit but I cannot seem to understand what to do. Has anyone come across this issue and resolved it please?

I'm not a sysadmin (we are a three man company) but it's only me it seems to happen to. The other two use windows 7 professsional as client while I use windows 7 ultimate. All the machines are on the domain.

share|improve this question

Have you completely blocked ICMP on your home firewall? Has your home ISP blocked all ICMP traffic?

See What might prevent IKE handshake success in building an IPSEC tunnel?

It is mostly about Cisco VPN, but the same things will affect any IPSEC VPN.

share|improve this answer
Thank you I'll check this out. – Preet Sangha Oct 27 '11 at 5:08

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.