We have a WRV54G router and connecting from the outside to inside SBS 2003 server through VPN has never worked. I get a 720 error on the client and a error in the SBS server about no GRE protocol being passed through. I swapped out the router with a WRT54G and it works. Router has the most current firmware, reset it to factory defaults and made sure VPN pass through are checked. Having issues trying to find a number to call and wound up here. Thanks!