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       sniffit - configuration file for sniffit (name arbirtary)


       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

              # Sniffit Sample Config file -- Brecht Claerhout

              logfile /var/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>


              select - Sniffit will look for packets that match the  following
              description (other fields)

              deselect   -   Sniffit   will  ignore  packets  that  match  the

              logfile - change the logfile name to  <field2>  instead  of  the
              default ’sniffit.log’

              from  -  Packets  FROM the host matching the following desc. are

              to - similar, Packets TO the....

              both - similar, Packets FROM or TO the....

              a filename - as an argument of ’logfile’ in <field1>

              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’

              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)

              A  portnumber,  if <field3> was ’host’ or ’mhosts’ (optional, if
              not filled in, all ports are going to be (de)selected)


       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

              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

                    select both mhosts 100.100.12.
                    select both host
                    deselect both port 80

              Will give you the packets (probably unwanted result):
                    a) Send by hosts ’100.100.12.*’
                    b) Send from/to (useless line)
                    c) deselecting all WWW packets on the subnet


       Brecht Claerhout <>