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| Subject: | Re: [Snort-sigs] Snorting gzip encoded http source code |
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| Date: | Tue, 31 Aug 2004 11:43:41 +1200 |
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... A "uncompressor" preprocessor would be nice - but I have no idea what the performance impact would be... -- Cheers Jason Haar Information Security Manager, Trimble Navigation Ltd. Phone: +64 3 9635 377 Fax: +64 3 9635 417 PGP Fingerprint: 7A2E 0407 C9A6 CAF6 2B9F 8422 C063 5EBB FE1D 66D1 ------------------------------------------------------- This SF.Net email is sponsored by BEA Weblogic Workshop FREE Java Enterprise J2EE developer tools! Get your free copy of BEA WebLogic Workshop 8.1 today. http://ads.osdn.com/?ad_id=5047&alloc_id=10808&op=click _______________________________________________ Snort-sigs mailing list Snort-sigs@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/snort-sigs
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