[PLUG] netfilter transparent mode (like SonicWall)
Roderick A. Anderson
raanders at acm.org
Fri Jun 6 16:34:20 UTC 2008
Is there a netfilter (iptables) setup to do like the SonicWall
Transparent mode? I.e. filter publicly route-able IPs.
My searching via Google keeps turning up 'transparent' and 'squid'
references. There is no calamari involved in what I'm interested in
doing. ;-)
I'm not sure why this is currently being done; I inherited the setup
with no documentation. I will NAT/masq the LAN until I find a good
reason to make it a transparent setup.
From what I've read about the SonicWall (a SOHO2; which hit end-of-life
a long time ago) there is some virus, spam, etc. filtering going on. It
seems the transparent mode would make outside (WAN/Internet) access
possible per machine instead of a doing the typical firewall port
redirection.
Currently I can not find any need for this for this customer or if the
access was ever setup or done. May have been an up-sale by the ISP and
whoever installed the SonicWall. More expensive hardware and a per IP
address cost.
So anyone have suggestions as to where (specifically) to look for
methods of emulating a SonicWall with netfilter/iptables?
TIA,
Rod
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