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 From:  David Cook <david dot cook at jetpress dot com>
 To:  "'m0n0wall at lists dot m0n0 dot ch'" <m0n0wall at lists dot m0n0 dot ch>
 Subject:  RE: [m0n0wall] IP aliases on external interface
 Date:  Thu, 19 Feb 2004 08:02:38 -0000
Hi Jason,

Yes this is supported. You need to use Proxy ARP so that m0n0wall sends ARP
replies on the WAN interface for IP addresses other than that specified in
the WAN configuration. This is in effect 'binding' the multiple IPs to the
WAN interface.

Once additional IPs are configured in Proxy ARP then they can be used for
NAT, either Inbound, Server NAT, 1:1 or Outbound. If you want to use Inbound
NATing based on ports, don't forget that any IP address other than that
specified in the WAN configuration needs to be configured in Server NAT.

Bridging is only really appropriate if you want to assign IP addresses from
the network on your WAN interface directly to hosts behind m0n0wall.

>-----Original Message-----
>From: Jason P Jones [mailto:jjones at integracon dot com]
>Sent: 19 February 2004 07:44
>To: m0n0wall at lists dot m0n0 dot ch
>Subject: [m0n0wall] IP aliases on external interface
>Are IP aliases (allowing multiple IP's bound to external 
>interface) planned
>in the future. I know that you can bridge a DMZ interface- but that's a
>hack/kludge- not what I'm asking). I have several situations 
>where 2-5 IP's
>may be bound to external interfaces with ports being forwarded from
>different external IP's to different internal hosts- EG.
>X.X.X.5:80--> and X.X.X.5:80--> - 
>etc. etc..
>And this would open up a couple of new installs for m0n0wall 
>in these cases
>for these networks.
>Jason P Jones
>Integracon Technologies
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Nunn Close
NG17 2HW

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