Firewall Wizards mailing list archives
RE: RE: High Speed Firewalls
From: "David Newman" <dnewman () networktest com>
Date: Tue, 14 Mar 2000 16:58:43 -0500
If the
cars go from 65 MPH to 6.5 MPH (on average through the toll gate) then you need to go from 2 lanes to 20 lanes. Is that "a hell of a lot"? Sure, it's more than most toll plazas that I've ever seen, but most traffic authorities are not so concerned with throughput that they will engineer a full-bandwidth toll plaza under peak load.
Again, the cars/toll booths thing isn't a good analogy here. I agree that parallelism can be a big win in performance terms -- but probably not big enough for the kinds of performance penalties we're facing with firewalls deployed on networks of, um, interesting sizes and speeds. Consider, for example, OC-48 (2.4-Gbit/s) links which are common today in large carrier networks or OC-192 (10-Gbit/s) links that are beginning to appear. Given current firewall speed limits of ~100 Mbit/s or less in each direction, we're not talking about 10:1 parallelism -- indeed 1000:1 may be more like it. This *might* work from a traffic engineering standpoint, but there's no way any self-respecting ops guy (or gal) will sign off on a network design that adds 999 more interfaces to manage. And guess what -- some of the optical people expect to see 40-Gbit/s and 80-Gbit/s interfaces deployed in the next 2-3 years. So we go from 240-fold boosts to 8000-fold boosts real soon now. I understand that there are designs being developed that make heavy use of parallelism, but they'll have to do a lot better than thousandfold increases in the number of interfaces to get in the door. dn
Current thread:
- RE: High Speed Firewalls, (continued)
- RE: High Speed Firewalls David Newman (Mar 12)
- Re: High Speed Firewalls Crispin Cowan (Mar 12)
- RE: High Speed Firewalls David Newman (Mar 12)
- Re: RE: High Speed Firewalls Crispin Cowan (Mar 17)
- RE: RE: High Speed Firewalls David Newman (Mar 17)
- Re: RE: High Speed Firewalls Crispin Cowan (Mar 21)
- RE: RE: High Speed Firewalls David Newman (Mar 21)
- Re: RE: High Speed Firewalls Crispin Cowan (Mar 21)
- RE: RE: High Speed Firewalls David Newman (Mar 21)
- Re: RE: High Speed Firewalls Crispin Cowan (Mar 21)
- RE: RE: High Speed Firewalls David Newman (Mar 21)
- Re: RE: High Speed Firewalls Saravana Ram (Mar 23)
- Re: Re: High Speed Firewalls Dug Song (Mar 13)
- RE: RE: High Speed Firewalls David Newman (Mar 17)
- Re: RE: High Speed Firewalls Ryan Russell (Mar 21)
- RE: RE: High Speed Firewalls David Newman (Mar 21)
- Re: RE: High Speed Firewalls Crispin Cowan (Mar 21)