Re: Feature Request: regex matching available as $n strings for msg:?

[Jeff Nathan <jeff () snort org>]

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you seek snort-perl or snort-pcre.

http://www.snort.org/dl/contrib/patches/

Go forth and be merry.

- -Jeff

- --On Monday, June 23, 2003 13:54 +1200 Jason Haar 
<Jason.Haar () trimble co nz> wrote:

> Says it all really. I know the regex support isn't live yet, but...
>
> There are quite a few rules where it would be most useful if you could
> actually "see" some of the data that triggered the alert. e.g. if you
> wanted to log the username of all attempted FTP logins, you could do
> something like:
>
> alert tcp $EXTERNAL_NET any -> $HOME_NET 21 \
> (msg:"Attempted FTP login by $1"; \
> flow:to_server,established; \
> regex:"USER ([^\s]+)";)
>
> For realtime alerting in the current implementation, post-processing such
> information is really next to impossible as you either have to interact
> with the SQL database, or with raw tcpdump logs...
>
>
> --
> 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
>
>
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- --
http://cerberus.sourcefire.com/~jeff       (gpg key available)
Great spirits have always encountered violent opposition from mediocre
minds.
- - Albert Einstein
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