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Paranoid Penguin - Building a Transparent Firewall with Linux, Part II

Issue 197

From Issue #197
September 2010

Nov 01, 2010  By Mick Bauer
 in
Use commodity to hardware to build a transparent firewall.
Conclusion

But, this is as far as I can take you this month. Next time, I'll begin showing how to configure networking, bridging and, of course, iptables on our transparent firewall.

If you can't wait until then, see the OpenWrt home page for more information, or if you're really adventurous, search the Web for other tutorials on creating transparent firewalls with OpenWrt. But, if I say so myself, we're off to a good start!

Resources

Home Page for the OpenWrt Project: www.openwrt.org

OpenWrt's Table of (Supported) Hardware: oldwiki.openwrt.org/TableOfHardware.html

Mick Bauer's “Building a Secure Squid Web Proxy, Part I”, LJ, April 2009: www.linuxjournal.com/article/10407

Mick Bauer's “Building a Secure Squid Web Proxy, Part II”, LJ, May 2009: www.linuxjournal.com/article/10433

Mick Bauer's “Building a Secure Squid Web Proxy, Part III”, LJ, July 2009: www.linuxjournal.com/article/10488

Mick Bauer's “Building a Secure Squid Web Proxy, Part IV”, LJ, August 2009: www.linuxjournal.com/article/10513

Mick Bauer (darth.elmo@wiremonkeys.org) is Network Security Architect for one of the US's largest banks. He is the author of the O'Reilly book Linux Server Security, 2nd edition (formerly called Building Secure Servers With Linux), an occasional presenter at information security conferences and composer of the “Network Engineering Polka”.

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Transparent firewall

keeper.oregon's picture
Submitted by keeper.oregon (not verified) on Sun, 01/16/2011 - 11:04.

Glad to see someone else is trying to tackle this issue. Over the winter break/holidays, I resdesigned my home/remote-office/spouses-business networks from three seperate layer-3 firewalls to a single layer-3 network. I was hoping to utilize the fifth port on two of the wireless routers. I have been trying to get my Cisco LinkSys WRT320N to keep broadcast/multi-cast media traffic local. I will look into the OpenWRT to attempt layer-2 firewall the WRT320N.

--Mark

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