Last week without warning, all of my remote VPN clients lost the ability to connect and establish a VPN session to our PIX 506. Everything had been working fine one day, then stopped the next. Nothing changed on the PIX, same ISP on the host side, same everything, but no client can connect.
The PC's my users are trying to connect from are a mix of WindowsXP, Windows 7, and Windows 8. All are running the Cisco VPN client 5.0.07, 32bit or 64bit where applicable. When I try to connect the VPN client appears to reach out to the PIX and start negotiating, says it's securing communications, then times out and says "Not Connected".
I have no idea why it worked fine for everyone one day, and stopped for everyone the next.
I will post a connection log from one of the clients in a separate post.
I'm not an experienced CISCO guy, so any help would be greatly appreciated.