I had problems establishing a VPN session through my linksys router - and saw so many other people have the same problems. But I worked out how to get it working without a fuss - without the "you must have a static IP address" as advised by tech support at linksys.
Log on to your router.
Click "Gaming and Applications" section.
Click "Port Triggering".
Then enter an app name (any thing you like) in the application field.
In each of the four port fields enter 500 and tick enable
Do the same for 4500 or what ever the other port number is on your VPN server.
That should do the trick. No need for static IP addresses or any thing out of the ordinary.
Good Luck
Mark.
Log on to your router.
Click "Gaming and Applications" section.
Click "Port Triggering".
Then enter an app name (any thing you like) in the application field.
In each of the four port fields enter 500 and tick enable
Do the same for 4500 or what ever the other port number is on your VPN server.
That should do the trick. No need for static IP addresses or any thing out of the ordinary.
Good Luck
Mark.