Re: NIDS + packet logging - only alert packets get logged

["Rodgers, Anthony (DTMB)" <RodgersA1 () michigan gov>]

Hi Rich,

This solution (http://nsmwiki.org/index.php?title=Sguil_on_RedHat_HOWTO#On_your_server) which is basically the 
precursor to SecurityOnion calls for two instances of snort, one running in IDS mode, one running in packet logging 
mode. I don't think you can combine the two into one instance.

--
Anthony Rodgers
Security Analyst
Michigan Security Operations Center (MiSOC)
DTMB, Michigan Cyber Security

-----Original Message-----
From: Rich Lee [mailto:laughingblade () gmail com] 
Sent: Wednesday, March 09, 2016 11:15
To: Al Lewis (allewi) <allewi () cisco com>
Cc: snort-users () lists sourceforge net
Subject: Re: [Snort-users] NIDS + packet logging - only alert packets get logged

Thanks Al,

that's useful info.

As far as Security Onion goes I'm just reading the startup script... it looks like he runs netsniff-ng for packet 
capture, and then snort in NIDS mode.

Cheers!

Rich LEe

On 09/03/16 15:58, Al Lewis (allewi) wrote:
> Sorry.. I have never used Security Onion.
>
> Based on the what I have seen in the manual you can do one or the other but not both at the same time.
>
> If you supply a conf snort goes into NIDS mode.
>
> Good luck!
>
> Albert Lewis
> QA Software Engineer
> SOURCEfire, Inc. now part of Cisco
> 9780 Patuxent Woods Drive
> Columbia, MD 21046
> Phone: (office) 443.430.7112
> Email: allewi () cisco com
>
>
> -----Original Message-----
> From: Rich Lee [mailto:laughingblade () gmail com]
> Sent: Wednesday, March 09, 2016 10:49 AM
> To: Al Lewis (allewi)
> Cc: snort-users () lists sourceforge net
> Subject: Re: [Snort-users] NIDS + packet logging - only alert packets 
> get logged
>
> Thanks Al. What I want to do is precisely *not* that: I want to run NIDS mode so I get alerts, and I also want to 
> capture all packets. AFAIK SecurityOnion does this.
>
> On 09/03/16 15:35, Al Lewis (allewi) wrote:
> > See the next page:
> >
> > "To enable Network Intrusion Detection System (NIDS) mode so that you don't record every single packet sent down the 
> > wire, try this:     ./snort -dev -l ./log -h 192.168.1.0/24 -c snort.conf"
> >
> > http://manual.snort.org/node6.html
> >
> >
> >
> >
> > Albert Lewis
> > QA Software Engineer
> > SOURCEfire, Inc. now part of Cisco
> > 9780 Patuxent Woods Drive
> > Columbia, MD 21046
> > Phone: (office) 443.430.7112
> > Email: allewi () cisco com
> >
> >
> > -----Original Message-----
> > From: Al Lewis (allewi)
> > Sent: Wednesday, March 09, 2016 10:32 AM
> > To: 'Rich Lee'
> > Cc: snort-users () lists sourceforge net
> > Subject: RE: [Snort-users] NIDS + packet logging - only alert packets 
> > get logged
> >
> > If you are running in IDS mode (WITH a conf file)  then ONLY the alert traffic is captured.
> >
> > If you run WITHOUT a conf file then ALL traffic is captured.
> >
> > I think you are trying to mix packet logger with NIDS mode.
> >
> > Albert Lewis
> > QA Software Engineer
> > SOURCEfire, Inc. now part of Cisco
> > 9780 Patuxent Woods Drive
> > Columbia, MD 21046
> > Phone: (office) 443.430.7112
> > Email: allewi () cisco com
> >
> > -----Original Message-----
> > From: Rich Lee [mailto:laughingblade () gmail com]
> > Sent: Wednesday, March 09, 2016 9:47 AM
> > To: snort-users () lists sourceforge net
> > Subject: [Snort-users] NIDS + packet logging - only alert packets get 
> > logged
> >
> > Hi,
> >
> > newbie kind of Q I'm afraid:
> >
> > I'm running snort 2.9.8.0 & Barnyard2 in an Ubuntu 14.04 VM, set up according to Noah Dietrich's guide.
> >
> > I want to run snort as NIDS to alert, but also capture *all* packets.
> > According to http://manual.snort.org/node5.html I should be good with './snort -l ./log -b'
> >
> > The command I'm running is './snort -c /pathto/snort.conf -i eth0 -l /pathto/log -b', and I'm seeing timestamped log 
> > files as expected, but only for alerts, not for other traffic...
> >
> > My understanding from the docs is that the command line log switch should log *all* packets, and output modules 
> > configured in snort.conf will log processed/detected alert packets. I've tried this with output module configured, 
> > and with no output modules at all - but snort continues to log only alerting packets. I've confirmed that there 
> > actually is other traffic to be captured by running wireshark alongside.
> >
> > Does the -l -b switch work? Am I possibly missing something obvious?
> >
> > TIA
> > Rich Lee
> >
> > ---------------------------------------------------------------------
> > -
> > --------
> > Transform Data into Opportunity.
> > Accelerate data analysis in your applications with Intel Data Analytics Acceleration Library.
> > Click to learn more.
> > http://pubads.g.doubleclick.net/gampad/clk?id=278785111&iu=/4140
> > _______________________________________________
> > Snort-users mailing list
> > Snort-users () lists sourceforge net
> > Go to this URL to change user options or unsubscribe:
> > https://lists.sourceforge.net/lists/listinfo/snort-users
> > Snort-users list archive:
> > http://sourceforge.net/mailarchive/forum.php?forum_name=snort-users
> >
> > Please visit http://blog.snort.org to stay current on all the latest Snort news!


------------------------------------------------------------------------------
Transform Data into Opportunity.
Accelerate data analysis in your applications with Intel Data Analytics Acceleration Library.
Click to learn more.
http://pubads.g.doubleclick.net/gampad/clk?id=278785111&iu=/4140
_______________________________________________
Snort-users mailing list
Snort-users () lists sourceforge net
Go to this URL to change user options or unsubscribe:
https://lists.sourceforge.net/lists/listinfo/snort-users
Snort-users list archive:
http://sourceforge.net/mailarchive/forum.php?forum_name=snort-users

Please visit http://blog.snort.org to stay current on all the latest Snort news!

------------------------------------------------------------------------------
Transform Data into Opportunity.
Accelerate data analysis in your applications with
Intel Data Analytics Acceleration Library.
Click to learn more.
http://pubads.g.doubleclick.net/gampad/clk?id=278785111&iu=/4140
_______________________________________________
Snort-users mailing list
Snort-users () lists sourceforge net
Go to this URL to change user options or unsubscribe:
https://lists.sourceforge.net/lists/listinfo/snort-users
Snort-users list archive:
http://sourceforge.net/mailarchive/forum.php?forum_name=snort-users

Please visit http://blog.snort.org to stay current on all the latest Snort news!