DHCP and the "SIMPLE" option in /etc/rc.firewall

[James A. Coulter]

I am setting up a firewall for a gateway/router running FreeBSD 4.10.

This is for a small home LAN.

I have already compiled and installed a custom kernel with the IPFIREWALL
and IPDIVERT options and configured the firewall to pass any to any without
any problems - now it's time to start locking it down.

I would like to use the firewall_type="SIMPLE" option rc.conf.  But I'm not
sure how I should set up my external nic in /etc/rc.firewall, i.e:

# set these to your outside interface network and netmask and ip
        oif="ed0"
        onet="192.0.2.0"
        omask="255.255.255.240"
        oip="192.0.2.1"

My outside interface is connected to a cable modem and is configured for
DHCP

Without a static IP address for my outside interface, how do I set these
options?

TIA for your help.

Jim C.

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