two IP adresses from one network on both firewall cards ?
Wed, 16 Jan 2002 17:15:29 +0100
I have the following question:
We have real IP adresses from our class C network assigned to all
machines in our LAN. Now we got a new fast DSL connection to the Internet
from our Service Provider.
The new DSL router (which our ISP has installed) also has an IP from our
class C network.
I would like to put a firewall between this router and our LAN.
The firewall has two ethernet cards. I think I would have to
assign one IP from our class C network to the LAN side of the firewall and
another IP adress from our class C network to its internet side interface.
Is that possible ?
All the samples scripts for "iptables" I have seen up to now assume
different network numbers for the two interfaces in a firewall.
If it is possible to use two IP adresses from the same network, how
can the firewall know, which machine is reachable via eth0 and which is
reachable via eth1 ?
Are there any sample scripts ?
Any help is appreciated !