NAT with two different alias addresses. Is it possible?

[Emanuel Strobl]

Am Montag, 9. Mai 2005 22:29 schrieb Денис Медведев:
> Hello, everybody!
>
> I've just installed freeBSD 5.3 on my old computer to make it NAT
> router for internet sharing. The example is classical: two machines in
> my internal network and one IP from provider. Except one moment - my
> internet connection is established through PPPoE. So my unix has 3
> network interfaces:
>   rl0 - provider's network 10.10.54.107/16
>   tun0 - pppoe (through rl0 of course). Here my IP is 192.168.54.107
>   rl1 - my internal network 172.16.0.1/24 (do not laugh i've made it
>         for difference)
>
> NAT has alias address 192.168.54.107, and internet connection works
> perfectly. BUT there are a lot of resources in 10.10.54.107/16
> network I can't get access from my internal machines. I think address
> translation to 10.10.54.107 could help. Or not? Maybe it is possible
> to launch second NATd for this interface?

Hmm, I don't know if I understood correctly but you don't need to NAT if 
you want to route from 172.16.0/24 to 10.10/16. Just NAT anything on tun0 
from !192.168.54.107 to any. (And make sure gateway_enable="YES", resp. 
net.inet.ip.forwarding=1)
You don't tell us whether you use IPFW, IPF or PF, but at least for the 
latter two you could define more than one NAT rule!

-Harry
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