I have a Fortigate 60 firewall. Both WAN ports are connected to the same DSL modem via an ethernet switch. Each WAN port is configured to use different PPPoE user/names and passwords and, when logged in, each WAN port is assigned a different static IP. We use NAT/port forwarding to machines on our LAN.
What I would like to get set up is a system where all traffic on our network goes out through WAN1, except for traffic to/from one web server on our network, which I would like to go through WAN2. I'm doing this because there is already a web server on our network accessible through WAN1 and I need the second to also be accessible from the web.
Everything works fine when WAN1 is PPPoE logged in, but as soon as WAN2 is PPPoE conencted, no traffic seems to flow in or out of our network via either WAN interface; everything is blocked. If I disconnect WAN2, everything goes back to normal.
Can someone please let me know what I might be doing wrong here?