Re: UDP packet handling weird behaviour of various operating systems

From: Stefan Laudat (stefanat_private)
Date: Wed Jul 25 2001 - 15:48:04 PDT

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    > Uh-huh. Tested it on Linux 2.2 and 2.4, can't confirm the problem. It
    > would be pretty strange, btw, since it simply generates normal UDP packet,
    > no black magic, really, and remote system, unless there's comast service
    > running, politely responds with 'ICMP destination port unreachable', which
    > is translated into 'Connection refused'.
    
    One extra thing I haven't underlined so well in my announce: cisco routers
    (and as well as other ones maybe) start crawling even forwarding the flood not
    being the target itself only. Looks like an UDP handling problem for me :(
    I have managed to kill a 7513 Cisco Router with DCEF enabled and loads of
    other speed hacks. Try it for yourself :)
    
    -- 
    Stefan Laudat
    CCNA,CCAI
    Senior Network Engineer
    Allianz-Tiriac SA
    
    "Let's call it an accidental feature."
            -- Larry Wall
    



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