[Snort-users] Correlate between Snort and p0f

Hello everyone,

I would like to know if snort give enough information's to allow me to
make a guess of the source/destination Operating system?

I got a table in my mysql database with a list of OS fingerprints.
This table was generated using the p0f.fp file available with p0f
1.8.3 (http://lcamtuf.coredump.cx/p0f/old/p0f-1.8.3.tgz).

Here the database schema with field's descriptions:

CREATE TABLE `p0f` (
`os_id` int(11) NOT NULL auto_increment,
`os_name` text,=09=09=09=09# os_name - Operating system name
`win` int(11) default NULL,=09=09# win - window size
`ttl` int(11) default NULL,=09=09# ttt - time to live
`mss` int(11) default NULL,=09=09# mss - maximum segment size
`df` int(11) default NULL,=09=09# df - don't fragment flag (0=3Dunset, 1=
=3Dset)
`wscale` int(11) default NULL,=09# wscale - window scaling (-1=3Dnot
present, other=3Dvalue)
`sok` int(11) default NULL,=09=09# sok - sackOK flag (0=3Dunset, 1=3Dset)
`nop` int(11) default NULL,=09=09# nop - nop flag (0=3Dunset, 1=3Dset)
`size` int(11) default NULL,=09# size - packet size (-1 =3D irrevelant)
PRIMARY KEY (`os_id`)
) TYPE=3DMyISAM;

Anyone can help me determine which p0f field match which field in the
snort database?

For example
[snort]=09=09=E2=86=92=09[p0f]
Ip_idr/ip_ttl=09=E2=86=92=09ttl

This is the only match I have made so far =E2=80=A6 I believe most match
should be in the 'iphdr' and 'opt' tables. I know they are some
snort-mods to make this match automatically but I would like to do it
by hand using my p0f database, if that's possible of course !

Help would be very appreciated, on-list or off-list.

Thanks a lot!

ps: excuse my imperfect English, this is not my main language=E2=80=A6

ps2: some of you using opensource viewed may see some garbage in my
mail, this is due to the fact that I use gpopper to have a pop access
to my gmail account :)

L. Waterhouse


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