nanog mailing list archives
Re: Re[2]: SYN floods (was: does history repeat itself?)
From: Alexis Rosen <alexis () panix com>
Date: Tue, 10 Sep 1996 22:31:03 -0400 (EDT)
Justin W. Newton writes:
At 02:12 PM 9/10/96 -0400, Alec H. Peterson wrote:FWIW, even with a thousand very busy modems, I'm pretty sure that even a small cisco is up to the job. They just don't generate all that muchtraffic.Could be, although I'd want to see this before I bet the farm on it. I'm not sure how efficient crisco's filtering algorithm is...I have found that 2500's do not have the processor for even basic filtering when sitting in front of several hundred modems. 4700's on the other hand (and 7200's) have the ability to handle the job with little difficulty.
Really? Is there something special about 2500s as compared to AGSes? Alec pointed out to me that my numbers were a bit off, but they're not off by that much. How much traffic was there on the 2500 that you were trying to use for filtering? And how many ports were in use? FWIW, in terms of low-cost solutions, 4000s and 4500s may still be available, and I think the 4000 has the same CPU as an AGS (25MHz 68040) though I might be misremembering. I'm sure the 4500 is plenty- it's got a 100MHz MIPS chip (from IDT, I think). /a - - - - - - - - - - - - - - - - -
Current thread:
- Re: SYN floods (was: does history repeat itself?), (continued)
- Re: SYN floods (was: does history repeat itself?) Ben Tersian (Sep 09)
- Re: Re[2]: SYN floods (was: does history repeat itself?) Justin W. Newton (Sep 09)
- Re[4]: SYN floods (was: does history repeat itself?) Pat Calhoun (Sep 09)
- Re[4]: SYN floods (was: does history repeat itself?) Pat Calhoun (Sep 10)
- Re: Re[4]: SYN floods (was: does history repeat itself?) Perry E. Metzger (Sep 10)
- Re: Re[4]: SYN floods (was: does history repeat itself?) Alec H. Peterson (Sep 10)
- Re: Re[4]: SYN floods (was: does history repeat itself?) Perry E. Metzger (Sep 10)
- Re: Re[4]: SYN floods (was: does history repeat itself?) Alexis Rosen (Sep 10)
- Re: Re[4]: SYN floods (was: does history repeat itself?) Curtis Villamizar (Sep 12)
- Re: Re[2]: SYN floods (was: does history repeat itself?) Justin W. Newton (Sep 10)
- Re: Re[2]: SYN floods (was: does history repeat itself?) Alexis Rosen (Sep 10)
- Re: Re[2]: SYN floods (was: does history repeat itself?) Paul Frommeyer (Sep 10)
- Re: Re[2]: SYN floods (was: does history repeat itself?) Dick St.Peters (Sep 11)
- Re: Re[2]: SYN floods (was: does history repeat itself?) Alexis Rosen (Sep 10)
- Re[6]: SYN floods (was: does history repeat itself?) Pat Calhoun (Sep 11)
- Re: Re[2]: SYN floods (was: does history repeat itself?) Justin W. Newton (Sep 12)
- Re: Re[2]: SYN floods (was: does history repeat itself?) Michael Dillon (Sep 12)
- Re: SYN floods (was: does history repeat itself?) Justin W. Newton (Sep 12)
- Re: SYN floods (was: does history repeat itself?) Alex.Bligh (Sep 12)
- Re: SYN floods (was: does history repeat itself?) Alexis Rosen (Sep 13)
- Re: SYN floods (was: does history repeat itself?) Alex.Bligh (Sep 12)
- Re: SYN floods (was: does history repeat itself?) Tim Salo (Sep 12)
- Re: SYN floods (was: does history repeat itself?) Justin W. Newton (Sep 13)
(Thread continues...)