IP Settings: RH 9 In Firewall

[Rich Lichvar]

Trying to get an RH 9 firewall up and running. I have the following IP
settings:

1. eth1 internal IP x.x.x.2, netmask 255.255.255.0, no gateway set. This
is the internal/trusted interface.
2. eth0 external IP x.x.x.210, net mask 255.255.255.248,
gateway=x.x.x.209 which is the IP of the business DSL connection/modem.

I get "Destination host unreachable" when trying to ping the DSL modem's
IP address from the firewall host itself.

Any clues???

RichLich