@geluykens:
My modem includes a router, so no ISP problem.
Like wallabybob says, I have reconfigured the interfaces to different subnets:
[modem in DHCP(isp)–---out X.X.0.1]–---[firewall in (DHCP)–---out X.X.2.1]–---[router in X.X.2.2–---out X.X.1.1]–---> network
So I can't give the firewall WAN interface a static ip ?
I just tried and everything stiil works. My setup now is:
[modem in DHCP(isp)–---out X.X.0.1]–---[firewall in X.X.0.2–---out X.X.2.1]–---[router in X.X.2.2–---out X.X.1.1]–---> network
Thx for the support.