Snort mailing list archives
Re: snort 2.9.x.x software flow chart
From: waldo kitty <wkitty42 () windstream net>
Date: Thu, 04 Apr 2013 13:06:03 -0500
On 4/4/2013 10:59, Lawrence R. Hughes,Sr. wrote:
Waldo Kitty, Thanks for the reply.. Software flow from internet would be great..
here are a couple of possible answers... http://stackoverflow.com/questions/7962791/i-want-to-know-full-flow-of-how-snort-processes-a-packet figure 6 in the below old (2004) pdf concerning snort 2.4 might help... not sure how far off the mark it may be with today's 2.9 version of snort... http://www.princeton.edu/~soumyas/papers/bell_labs_report_snort.pdf there's also the below from 5 Sep 2012 in this list... http://comments.gmane.org/gmane.comp.security.ids.snort.general/37619 i can't get to seclists.org or insecure.org right now... but there are a few links pointing to them as well... oh, wait... they are point to the above discussion i linked to on gmane... here's a little something from the father of snort, martin roesch... http://securitysauce.blogspot.com/2007/11/snort-30-architecture-series-part-1.html dunno if these are what you may be looking for or not... they are what i found from uncle google in a few minutes and using a couple of different search term phrases... "snort process flow", "snort packet diagram flow", "snort architecture diagram"... each without the quotes of course ;)
Thanks, Larry -----Original Message----- From: waldo kitty Sent: Wednesday, April 03, 2013 6:43 PM To: snort-users () lists sourceforge net Subject: Re: [Snort-users] snort 2.9.x.x software flow chart On 4/3/2013 13:28, Lawrence R. Hughes,Sr. wrote:Hi, I am looking for a software flowchart for snort2.9.x.x Anyone know where I can find a copy?are you speaking of the internet to snort flow or a flow chart for installation or something else?Also, What program handles the capture point (where packets are deemed not to be a threat and are allowed to pass)?there are two options, if i'm understanding your question... the first option is snort in inline mode with DROP rules... in this mode, the traffic comes in on one interface to snort, gets processed, and then if it passes, snort feeds it out on another interface to the rest of the network being protected... if snort determines that it is unwanted traffic, then snort DROPs the traffic and doesn't pass it on inward... the second option is to use some software that monitors the alert file or the alerts being posted to the database... there are several packages that can handle the traffic at this stage... these packages have different ways of telling the firewall to block the traffic... they may issue instructions to iptables on a linux system or they may issue commands to some other software which would then initiate the block or drop...I am sure a flowchart would be very useful to find out what code handles what?i'm going to assume that this is a further clarification of the first query and that you are wanting to see how the traffic flows into and through snort's modules...
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Current thread:
- snort 2.9.x.x software flow chart Lawrence R. Hughes,Sr. (Apr 03)
- Re: snort 2.9.x.x software flow chart waldo kitty (Apr 03)
- Re: snort 2.9.x.x software flow chart Lawrence R. Hughes,Sr. (Apr 04)
- Re: snort 2.9.x.x software flow chart waldo kitty (Apr 04)
- Re: snort 2.9.x.x software flow chart Joel Esler (Apr 04)
- Re: snort 2.9.x.x software flow chart Lawrence R. Hughes,Sr. (Apr 04)
- Re: snort 2.9.x.x software flow chart waldo kitty (Apr 03)