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| Subject: | Re: [Snort-sigs] Snorting gzip encoded http source code |
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| Date: | 31 Aug 2004 21:52:55 +0200 |
El mar, 31 de 08 de 2004 a las 01:43, Jason Haar escribiÃ:
On Mon, Aug 30, 2004 at 06:58:09PM +0000, Abe Use wrote:I suppose I'll have my users connect through a proxy, and I'll have it strip or replace the "accept encoding gzip" portion of the header- so that I can match content plain-text. Would be cool though if snort was able to inflate the gzip'd stream, and look through the content... or save the stream and I could use something else to parse through it...Yes - that feature makes NIDS increasingly useless for Web traffic. Similar problem to HTTPS - and I think your solution mis similar to how we handle HTTPS (put in a reverse proxy and sniff the unencrypted side). However it'll mean you don't get any of the performance benefits of compressed traffic - which is a pity...
Maybe I'm wrong but you would get the performance benefits of having the traffic compressed if what you want it's to save bandwidth in your internet connection, because the 'gunzip' would be done in your local network, where it shouldn't matter to have more traffic. So the proxy option could be a good option.
A "uncompressor" preprocessor would be nice - but I have no idea what the performance impact would be...
It would be very nice. -- Jose Maria Lopez Hernandez Director Tecnico de bgSEC jkerouac@bgsec.com bgSEC Seguridad y Consultoria de Sistemas Informaticos http://www.bgsec.com ESPAÃA The only people for me are the mad ones -- the ones who are mad to live, mad to talk, mad to be saved, desirous of everything at the same time, the ones who never yawn or say a commonplace thing, but burn, burn, burn like fabulous yellow Roman candles. -- Jack Kerouac, "On the Road" ------------------------------------------------------- This SF.Net email is sponsored by: thawte's Crypto Challenge Vl Crack the code and win a Sony DCRHC40 MiniDV Digital Handycam Camcorder. More prizes in the weekly Lunch Hour Challenge. Sign up NOW http://ad.doubleclick.net/clk;10740251;10262165;m _______________________________________________ Snort-sigs mailing list Snort-sigs@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/snort-sigs
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