Messages in this thread | | | Subject | Re: Fork Bombing Attack | From | Krzysztof Halasa <> | Date | Fri, 18 May 2007 23:21:49 +0200 |
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"Anand Jahagirdar" <anandjigar@gmail.com> writes:
> ulimit are by default set to some value for all users.. root, guest. > on my machine with FC4 distribution when i typed command "ulimit -u" > it gave me output as 3055 and another machine having FC6 distribution > output is 8050. when root or any other user changes ulimit by typing > "ulimit -u value",.ulimit value is changed for that session and not > permantely. actually ulimit should help to prevent fork bombing attack > but it wont and fork bombing attack still take down the machine having > latest linux distributions.
how about: $ ulimit -u 100 $ for f in `seq 1 500`; do (sleep 100&); done
(on another terminal) $ ps xa|grep 'sleep 100' |wc -l
mine prints 93. -- Krzysztof Halasa - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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