Home page logo

basics logo Security Basics mailing list archives

Re: email gateway (transparent) - full transparent
From: "Philip Duldig" <maninwhite () tpg com au>
Date: Sat, 15 Nov 2003 11:19:13 +1030


have a look here:


It is a guide on how to setup squid (or any other server listening on a
given port) for transparent forced port redirection
No need to kernel hack as that great ipchains/iptables/netfilter does it for

You should be able to employ the method in this HOWTO to email filter
redirection for your MTA and any other caching, filtering, etc daemons that
you wish to force traffic through.

If your interested in a heavier squid filter check out
http://dansguardian.org/ -- Free squid filter with phrase parsing and I use
the http://www.squidguard.org/blacklist/ blacklists at work (Primary School
ages 5 to 12)

Hope this helps!

Philip Duldig

The result in relaying is 100% accurate, but spam is comming from time to
time ( eg. V1 () GRA).

But where my problem is:
My problem is with my local users (about 3k LAN users in about 500
buildings), they send spam (viruses, worms etc) not using my MTA.
I'm looking for transparent method (like redirect for transparent-proxy
w3cache, squid) to force traffic on port 25 to go via my MTA.

Do you have any ideas or experiences with that ?

I thought about writing own code for that, but im far far away from that
(begging with C proggramming and kernel hacking), instead i'm good in
every working capabilities wich are accessible and done before by somebody
else ;)

Well, if somebody is wondering how such LAN can work with linux routers +
sql_db + local_scripting + php + bash = CRM and NETWORK_ADMINISTRATION,
BILLING_SOFTWARE, AUTOMATIC_EMAIL_OFFICE visit my own software (sorry -
is not in english and has 1mega pictures) http://nsm.pl/~arek/superedit .
I'm interested in sharing my soft for development purposes or any other.

Arkadiusz Binder

The Presidio integrates PGP data encryption and XML Web Services security to 
simplify the management and deployment of PGP and reduce overall PGP costs 
by up to 80%.
FREE WHITEPAPER & 30 Day Trial - 

  By Date           By Thread  

Current thread:
[ Nmap | Sec Tools | Mailing Lists | Site News | About/Contact | Advertising | Privacy ]