[Snort-users] v1.7 on NT4 - Can't get my own RULES working?? help.
bryce at ...5010...
Tue Feb 19 13:08:07 EST 2002
Since I don't currently have the time to do another upgrade and 1.7 was a
stable working version on NT4 - can anyone please comment on how to run only
your 'local.rules' with only preprocessors of 'defrag' and 'http_decode' -
ie. apart from commenting out all the snort.conf 'includes' and other
preprocessors what am I missing such that even an 'any <> any' style rule
I'm assuming there is nothing wrong with my rules that I defined? (see
previous message below) - if there is something obviously wrong there can
you please let me know.
Thanks for your help - sorry if you have to dredge your memories now for 1.7
version way of doing things (although I would have hoped that 1.8 worked in
the same fashion).
Harness Racing New Zealand computer department,
emailto:bryce at ...5010...
> -----Original Message-----
> From: Wayne Work [mailto:wwork at ...3179...]
> Sent: Tuesday, 19 February 2002 12:34 p.m.
> To: Bryce Stenberg; snort-users at lists.sourceforge.net
> Subject: RE: [Snort-users] v1.7 on NT4 - Can't get my own RULES
> working?? help.
> First of all,
> If you are using 1.7 please upgrade NOW. Things will be much brighter
> -----Original Message-----
> From: snort-users-admin at lists.sourceforge.net
> [mailto:snort-users-admin at lists.sourceforge.net] On Behalf Of Bryce
> Sent: Monday, February 18, 2002 5:53 PM
> To: 'snort-users at lists.sourceforge.net'
> Subject: [Snort-users] v1.7 on NT4 - Can't get my own
> RULES working?? help.
> I'm new to snort and first time user on this list - so
> firstly, I've looked
> in the archives but could find no way to do a key word search. Is this
> possible? Anyway, sorry if repeating something often asked...
> I've had snort running for a number of months ok with just
> the default rules
> set. However, there is so much activity from attack attempts
> that I decided
> to not use all the rules and look instead for strings
> matching information
> on our servers that should not be passing out over the internet (like
> certain directory names, etc). This way I'll only get alerted
> to actual
> successful penetrations/compromise of the network, at least I hope so.
> So, I created a couple of rules of:
> alert tcp any any <> $HOME_NET any (msg:"Outgoing directory
> listing via
> tcp"; content: "enticing_directory_name"; nocase; flags: PA;
> alert udp any any <> $HOME_NET any (msg:"Outgoing directory
> listing via
> udp"; content: "enticing_directory_name"; nocase; flags: PA;
> I altered 'snort.conf' to NOT run any of the includes at end
> of file. Also
> stopped all preprocessors except 'defrag' and 'http_decode'.
> I initially placed my rules in 'local.rules' file but that
> had no effect -
> do I have to 'include' a certain lib file (at end of
> 'snort.conf') to be
> able to use 'local.rules' file?
> Anyway, I next added my rules to the end of 'backdoor.rules' file and
> uncommented the 'include backdoor-lib' since I expect that
> makes use of
> I then tested again (by ftp'ing directory listings and text
> files containing
> the content string from the server running snort so the
> packets had to be
> seen by snort). Still no alert outputs?
> So can anyone offer me advice on how to get it working please?
> I hope the above enough information but if more needed just ask.
> If its a problem with my actual rules, I have also tried various
> combinations in the header like:
> alert tcp any any <> any any (
> alert tcp any any -> $HOME_NET any (
> alert tcp any any <- $HOME_NET any (
> Bryce Stenberg.
> Harness Racing New Zealand computer department,
> emailto:bryce at ...5010...
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ALSO, unless expressly stated otherwise, the contents of this message
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