1. Benefits of dual-homed firewall for home network?
I'm upgrading my home server from Redhat 6.1 to SuSE 8.0 mainly so I
can take advantage of the improved packet filtering. The existing
server uses a fairly standard setup: Dialup ISP, IPCHAINS firewall
from Robert Ziegler's book, Internet sharing among Windows boxes, file
sharing with Samba, Setiathome, not much else.
My security books (Ziegler, Toxen) tell me that the firewall shouldn't
be on the same box as Samba and other important stuff. Okay, I have
an old Pentium 133 box with 64MB RAM that I've installed SuSE 8.0 on,
and I could use that as a separate firewall box.
Is my understanding of the physical interface correct?
* Modem on serial port to the Internet.
* Ethernet card with "null hub" (reverse) cable to eth1 on the main
* eth0 on the main server to the home network switch.
* Different networks for the firewall box and the main server (e.g.,
192.168.1.1 for the server and 192.168.2.1 for the firewall).
If this is correct, what does it buy me? I assume the separate
networks improve security, but I'm lost beyond that. All the diagrams
I've seen for a DMZ show Web servers and stuff off to the side between
the firewall and the rest of the LAN, but this doesn't really apply to
Is there any benefit to installing a second machine as a standalone
firewall, or should I just continue with my current setup where the
firewall is on the main server?
TIA for any advice.
Mike Dodd (remove 'xspam.' when emailing)
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