Symantec 360R Administration Guide - Page 191

Field descriptions 191 VPN field descriptions Table C-25 Section Dynamic Tunnels field descriptions Field Description Global Tunnel Normally, only requests destined to the network protected by the remote VPN Gateway are forwarded through the VPN. Other traffic, like Web browsing are forwarded straight out into the Internet. Enabling Global Tunnel forces all external traffic to the above VPN Gateway. This allows the Main office's firewall to filter traffic before sending the request on into the Internet. This provides your remote site with firewall protection from the Main site. Destination Networks should be blank with Global Tunnel enabled. Enabling Global Tunnel will also Disable all other SAs since all traffic must be routed through the global tunnel gateway. The global tunnel is disabled by default.