Re: [fw-wiz] CERT vulnerability note VU# 539363

From: Daniel Hartmeier (danielat_private)
Date: Wed Oct 16 2002 - 06:53:37 PDT

  • Next message: R. DuFresne: "RE: [fw-wiz] CERT vulnerability note VU# 539363"

    On Wed, Oct 16, 2002 at 08:20:09AM -0500, Stephen Gill wrote:
    
    > In my opinion if a stateful firewall claims it can filter at rate X
    > (64byte packets, etc...), it should be able to filter at that rate under
    > all conditions.
    
    Obviously, for any X, when each packet is part of a TCP handshake, the
    X/2 (or /3, depending on how you count) newly established connections per
    second will exhaust memory on the firewall after a certain amount of time.
    
    I don't think you meant 'be able to filter at that rate' to include
    'dropping legitimate connections when running out of memory', did you?
    
    > I'd like to learn some of the other methods being used for mitigation
    > amongst vendors.
    
    Yes, that's what I'd find most intersting to read in vendor statements
    myself. :)
    
    Daniel
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