Firewall Wizards mailing list archives
Re: Opinion: Worst interface ever.
From: "Marcus J. Ranum" <mjr () ranum com>
Date: Tue, 05 Jul 2005 09:25:48 -0400
Paul D. Robertson wrote:
The new Watchguard software "automatically" decides ruleset evaluation order, and there's no easy way that I can find to figure out what order something's going to be evaluated in.
That's a chip-head thing, Paul. Remember - it's all about performance, not security. By re-ordering the ruleset the firewall can evaluate the rules in the fastest possible manner. I had this explained to me once by an engineer who builds ASIC firewalls for a living - he thought it was a very cool optimization. When I suggested that they optimize the "deny all" default deny to the top of the sequence, because then it'd really scream - it took him a couple of seconds to laugh. mjr. _______________________________________________ firewall-wizards mailing list firewall-wizards () honor icsalabs com http://honor.icsalabs.com/mailman/listinfo/firewall-wizards
Current thread:
- Opinion: Worst interface ever. Paul D. Robertson (Jul 05)
- Re: Opinion: Worst interface ever. Marcus J. Ranum (Jul 05)
- Re: Opinion: Worst interface ever. Paul D. Robertson (Jul 05)
- Re: Opinion: Worst interface ever. Marcus J. Ranum (Jul 05)
- Re: Opinion: Worst interface ever. Darren Reed (Jul 06)
- Re: Opinion: Worst interface ever. Paul D. Robertson (Jul 06)
- Re: Opinion: Worst interface ever. Paul D. Robertson (Jul 05)
- Re: Opinion: Worst interface ever. Adam Jones (Jul 05)
- Re: Opinion: Worst interface ever. Dave Piscitello (Jul 05)
- Re: Opinion: Worst interface ever. Paul D. Robertson (Jul 05)
- Re: Opinion: Worst interface ever. Marcus J. Ranum (Jul 05)
- Re: Opinion: Worst interface ever. StefanDorn (Jul 05)
- Re: Opinion: Worst interface ever. Paul D. Robertson (Jul 05)
- Re: Opinion: Worst interface ever. StefanDorn (Jul 05)
- Re: Opinion: Worst interface ever. Paul D. Robertson (Jul 05)