Re: Modify the routing behavior of an SSG5-Serial firewall.

Hello,

Try to add more specific ones via Tunnel (I haven't used ScreenOS for long time so typing from memory):

set route 0.0.0.0/1 interface tunnel.1
set route 128.0.0.0/1 interface tunnel.1

And DON'T FORGET to add a /32 for Your tunnel endpoint via Ethernet interface, or You lose the Tunnel:

set route 198.51.100.1/32 gateway 203.0.113.1

HTH

Thx
Alex