I just installed a second 1721 router at a remote site and it connects to HQ via IPSec VPN. Works Great when I have a laptop there on site and its actively communicating back to the HQ Subnet. There is only one device there at the remote location and its just a web server of sorts, so it only talks when its spoken to.
My problem is that since the remote site is on DSL, the VPN drops here and there. Since the only device at the remote location does not talk unless spoken to, it never tries to bring up the VPN connection.
Is there a way to make the router keep the VPN connection up even if there is no traffic destined to the remote network?
The DSL Service is a Dynamic IP, so I can have HQ bring up the connection to the remote. I was hoping for some keep-alive that I can set up in the router to ping the HQ subnet every once in a while.