NAME¶
sniffit - configuration file for sniffit (name arbirtary)
DESCRIPTION¶
This page describes the format for the config file for
sniffit (see
sniffit(8) ). This file allows you to specify in great detail witch
packets should be processed by
sniffit. This file also controls (or
will control) some functions for the continuous logging ('-L' option).
A
sniffit config file might look like (Be sure to end it with a BLANK
line):
-
# Sniffit Sample Config file -- Brecht Claerhout
logfile /var/log/sniffit.today.log
# First select all packets!
select both mhosts 1
select both mhosts 2
# Now deselect all packets from/to those damn 'surfers'
deselect both port 80
deselect both port 8001
This file will tell
sniffit to process all packets on the subnet except
those FROM/TO ports 80 and 8001 (thus we don't want logs of those mass WWW
connections witch turn our logs unreadable).
The file consists of lines, lines are formed by fields, fields are separated
with SPACES (NO TABS). Unix comment lines (starting with '#' are allowed). So
this gives us:
- <field1> <field2> <field3> <field4>
<field5>
- <field1>
- select - Sniffit will look for packets that
match the following description (other fields)
- deselect - Sniffit will ignore packets that
match the description
- logfile - change the logfile name to <field2>
instead of the default 'sniffit.log'
- <field2>
- from - Packets FROM the host matching the following
desc. are considered.
- to - similar, Packets TO the....
- both - similar, Packets FROM or TO the....
- a filename - as an argument of 'logfile' in
<field1>
- <field3>
- host - The (de)selection criteria involves a
hostname.
- port - similar, ... a portnumber
- mhosts - The (de)selection criteria involves
multiple-hosts, like with the wildcars in 0.3.0, but without the 'x'
- <field4>
- Either a hostname, a portnumber, a service name or a
numbet-dot partial notation indicating multiple hosts depending on
<field3> (service names like 'ftp' are resolved as the services
available present on the host that runs Sniffit, and translated into a
port nr)
- <field5>
- A portnumber, if <field3> was 'host' or 'mhosts'
(optional, if not filled in, all ports are going to be (de)selected)
FILE INTERPRETING¶
The config file is interpreted SEQUENTIAL, so watch it, don't mix lines in a
file. Example:
-
select both mhosts 100.100.12.
deselect both port 80
select both host 100.100.12.2
This file will get you the packets:
a) Send by hosts '100.100.12.*'
b) EXCEPT the WWW packets
c) BUT showing the WWW packets concerning
100.100.12.2
-
select both mhosts 100.100.12.
select both host 100.100.12.2
deselect both port 80
Will give you the packets (probably unwanted result):
a) Send by hosts '100.100.12.*'
b) Send from/to 100.100.12.2 (useless line)
c) deselecting all WWW packets on the subnet
AUTHOR¶
Brecht Claerhout <coder@reptile.rug.ac.be>
SEE ALSO¶
sniffit(8)