Re: Snort not generating alerts

[Pratik Narang <pratik.cse.bits () gmail com>]

On Tue, Jul 10, 2012 at 6:51 PM, Peter Bates <peter.bates () ucl ac uk> wrote:

> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
>
>
> Hello all
>
> On 10/07/2012 14:09, Pratik Narang wrote:
> > Have you looked whether the unified2 file, 'snort.u2' in your
> > configuration contains any alerts or data using u2spewfoo?
> >
> > > Yes the log files do contain data (alerts?- can't see any...)
>
> What does something like this show:
>
> u2spewfoo snort.u2.1341924701 |grep sig
>
> You should see something along the lines of:
>
>
>         sig id: 3000035 gen id: 1       revision: 1
> classification: 33
>         sig id: 2013068 gen id: 1       revision: 2
> classification: 28
>         sig id: 23250   gen id: 1       revision: 1
> classification: 21
>
> The actual signatures you're hitting on.
>
> Yes, the Snort log file does contain the actual signatures. Running Snort
with *-A console* also does display the same.

> > > I tried this umpteen times... even re-installing Barnyard2...
> > > Barnyard2.waldo must be empty to begin with (right?) since I am
> > > only creating the file. Then, why should it contain rubbish??
>
> Barnyard should create the file initially - if I was testing and
> having problems I would
>
> a) stop snort
> b) stop barnyard2
> c) delete (or move) files out of your LOGDIR
> d) start snort
> e) start barnyard2
>
> I am not very clear what you mean. I did this, exactly as per the
guide available on snort.org -->

sudo tar zxvf barnyard2-1.9.tar.gz
cd barnyard2-1.9
sudo ./configure --with-mysql
sudo make
sudo make install
sudo cp etc/barnyard2.conf /usr/local/snort/etc
sudo mkdir /var/log/barnyard2
sudo chmod 666 /var/log/barnyard2
sudo touch /var/log/snort/barnyard2.waldo
sudo chown snort.snort /var/log/snort/barnyard2.waldo
(so, as per the guide, i am creating the waldo file)

And some changes in barnyard2.conf file-
config reference_file: /usr/local/snort/etc/reference.config
config classification_file: /usr/local/snort/etc/classification.config
config gen_file: /usr/local/snort/etc/gen-msg.map
config sid_file: /usr/local/snort/etc/sid-msg.map
config hostname: localhost
config interface: eth1

output database: log, mysql, user=snort password=MYPASSWORD dbname=snort
host=localhost

And as far as the (a) to (e) steps are concerned, yes i have tried
that....but stuck with the corrupt/truncated waldo file warning...


> You could also run barnyard2 in the foreground with -v but I seem to
> recall that doesn't show a great deal.
>
> - --
> Peter Bates
> Senior Computer Security Officer    Phone: +44(0)2076792049
> Information Services Division       Internal Ext: 32049
> University College London
> London WC1E 6BT
>
>
> Thanks,
-Pratik

> -----BEGIN PGP SIGNATURE-----
> Version: GnuPG v2.0.17 (MingW32)
> Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/
>
> iQEcBAEBAgAGBQJP/CxDAAoJELhVoVpEMS6RGbsH/j0Aw2asnc+LKFJpWH21WBe0
> CJf63S58XpwvVD6QRX2vXX92O6Lx9njEPdBhqH5J4/oY9cKjHXbsRw5LI68F1aJv
> FwgYjd/emsZdMSMctQTjTSUAj2yoIGxjXMh7OkyOoTFwXmg5cWjyOroo0E0ExsA0
> 6Q9wZ5xZP1D+kL0ghSOyKtxbFMVYh2dIv/90jlNZp79hsGkbPiPzFGkPTR1tSiX3
> dyXV5BGepBIic6u/FxkKfGQdfXsxbQEZRSq240u1uefw6XoXHaSj5AreBicWzFPW
> Y3jWDb3IOI7rQfX+UIelIybwHrW5blXEnAsSJQN98QbxRTuhO0RG5VuC8YlGN8w=
> =pWxT
> -----END PGP SIGNATURE-----
>
>
>
> ------------------------------------------------------------------------------
> Live Security Virtual Conference
> Exclusive live event will cover all the ways today's security and
> threat landscape has changed and how IT managers can respond. Discussions
> will include endpoint security, mobile security and the latest in malware
> threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/
> _______________________________________________
> 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://www.geocrawler.com/redir-sf.php3?list=snort-users
>
> Please visit http://blog.snort.org to stay current on all the latest
> Snort news!
------------------------------------------------------------------------------
Live Security Virtual Conference
Exclusive live event will cover all the ways today's security and 
threat landscape has changed and how IT managers can respond. Discussions 
will include endpoint security, mobile security and the latest in malware 
threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/

_______________________________________________
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://www.geocrawler.com/redir-sf.php3?list=snort-users

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