Shorewall users - Apr 2004 - help with multiple IP over pppoe

I am having a little trouble getting my head around this so any help would be
appreciated.

I have just signed up a new service and have been allocated the following subnet
which gives me 30
usable IP addresses.

210.15.xxx.192/27

The connection is made via pppoe which works fine and the connection creates
ppp0 and assigns
210.15.xxx.193.

Now I want to use 4 IP''s in a DMZ and the reset for NAT to loc.

My problems: 

I don''t know which interface to assign the other ip''s to, eth3
maybe?
I am assuming I can use proxyarp for the 4 dmz addresses too.

My Setup:

Shorewall version: 2.0.0b
Kernel: 2.4.22
Pppeo: rp-pppoe-3.5
Ppp: ppp-2.4.1

ppp0: 210.15.xxx.193
eth3: no IP (connected to modem)
eth0: 10.10.10.10/24 (loc)
eth1: 192.168.199.10/24 (dmz)
eth2: unused (second dsl in future)


Thanks in advance for any help you can offer,

Ben


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Ben wrote:
> I am having a little trouble getting my head around this so any help would
be appreciated.
> 
> I have just signed up a new service and have been allocated the following
subnet which gives me 30
> usable IP addresses.
> 
> 210.15.xxx.192/27
> 
> The connection is made via pppoe which works fine and the connection
creates ppp0 and assigns
> 210.15.xxx.193.
> 
> Now I want to use 4 IP''s in a DMZ and the reset for NAT to loc.
> 
> My problems: 
> 
> I don''t know which interface to assign the other ip''s to,
eth3 maybe?
> I am assuming I can use proxyarp for the 4 dmz addresses too.
> 
> My Setup:
> 
> Shorewall version: 2.0.0b
> Kernel: 2.4.22
> Pppeo: rp-pppoe-3.5
> Ppp: ppp-2.4.1
> 
> ppp0: 210.15.xxx.193
> eth3: no IP (connected to modem)
> eth0: 10.10.10.10/24 (loc)
> eth1: 192.168.199.10/24 (dmz)
> eth2: unused (second dsl in future)
> 
> 
> Thanks in advance for any help you can offer,
> 
Because you use PPPoE, your /27 is *routed* by definition. I would 
simply follow the advice in the setup guide for configuring a routed 
subnet; the setup guide example uses a /28 but I assume that you can 
adjust the example for the larger network.

-Tom
-- 
Tom Eastep    \ Nothing is foolproof to a sufficiently talented fool
Shoreline,     \ http://shorewall.net
Washington USA  \ teastep@shorewall.net