I have a couple of users that require having vpn connections to outside offices. They are on laptops so they need to have the vpn connections be from their machines rather than from a branch office type setup.
On Windows XP, created just standard pptp vpns. Connects just fine. The person at the other end says they can see the connection activity and everything fits.
We just bought a new Vista machine. Use the exact same settings. Conection fails with error 919. Admin at the other end says they show no activity on their firewall at all to even show that we are reaching them.
Our firewall log shows that the traffic is going out just fine.