HI, Problem get firewall going.

Michael Chesterton chesty at unconcerned.org
Mon Jul 31 09:44:03 BST 2006

Neil Dugan <ubuntu at butterflystitches.com.au> writes:

>> I don't think eth1 of the firewall should be be receiving arp
>> requests for, sounds like the computer thinks
>> is directly connected to it's network, not via
> Any way I can find out?
> I might have configured the DHCP wrong.

well, route -n

What I would do is clear all the firewall rules, polices to accept,
then check all the routes.

The modem should have three routes, default to the isp, via
192.168.1.xxx (whatever the firewalls eth0 ip address is) and
directly connected to the ethernet port.

The firewall should have three routes, default to the modem,
directly connected to eth0, directly connected to eth1

The computer should have two routes, default, and directly connected to eth0

> # route
> Kernel IP routing table
> Destination     Gateway         Genmask         Flags Metric Ref Use
> Iface
>     *          U     0      0 0 eth0
> default         UG    0      0 0 eth0

Is this on the computer? Looks like you've got your subnet mask set
wrong on the dhcp servers lease, it should be and is one
of the problems, I think you also need to put a route
on the modem.

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