Re: Syn flooding attacks

[Peter Evans <peter () gol ad jp>]

Phil Howard <phil () charon milepost com> wrote: 

        [about SYN flooding]

|I don't know of any routers that have these or other means of dealing with
|the SYN attacks.

        If you search cco for "tcp intercept", you should find
        something interesting. This feature was available in
        11.2(4)F.  ((paraphrased from memory))

        Basically the router completed the handshaking then passed
        on the completed connection to the inside host.

        When under attack, it halves the timeouts (progressively?)
        for half-open connections.

        I don't know what happened to the F branch. It seems to have
        been left behind.


        Peter
        ----*

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