on 19.10.2010 18:58, wfdudley wrote:
> Hi,
> 
> Thanks to Kwan, I have a CF image of a LEAF 3.1 installation to dd
> onto a CF card.
> 
> Next is to configure LEAF.  I've done this before, I'm running a VERY
> old version
> as my production firewall.  But the config files are different now,
> and I can't find
> any documentation on how to configure a bridged interface.
> 
> My Alix 2C3 board has three ethernet ports:
> 
> eth0: external world; I have a block of 16 static IPs
> eth1: the usual 192.168.1.0/24 running dhcpd etc.
> eth2: bridge to eth0, allows machines to have routable IP addresses that are
> visible to the internet, but with firewall/filtering to keep bad stuff out.

I would rather use routing and use proxy arp for this purpose.

But then, here is the syntax I use for my bridge between eth1 and eth2,
the interfaces have no ip addresses.

# Step 4 (optional): configure a bridge
auto br0
iface br0 inet static
        address 194.124.158.99
        netmask 255.255.255.0
        broadcast 194.124.158.255
        bridge_ports eth1 eth2
        up ip set link mtu 1400 dev br0

cheers

Erich

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