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ipfstat(8)							    ipfstat(8)

NAME
       ipfstat - reports on packet filter statistics and filter	list

SYNOPSIS
       ipfstat [ -6aAdfghIilnoRsv ]
       ipfstat	-t [ -6C ] [ -D	<addrport> ] [ -P <protocol> ] [ -S <addrport>
       ] [ -T <refresh time> ]

DESCRIPTION
       ipfstat examines	/dev/kmem using	the symbols _fr_flags, _frstats, _fil-
       terin,  and  _filterout.	  To run and work, it needs to be able to read
       both /dev/kmem and the kernel itself.   The  kernel  name  defaults  to
       /boot/kernel/kernel.

       The default behaviour of	ipfstat	is to retrieve and display the accumu-
       lated statistics	which have been	accumulated over time  as  the	kernel
       has put packets through the filter.

OPTIONS
       -6     Display filter lists and states for IPv6,	if available.

       -a     Display  the  accounting	filter	list  and  show	 bytes counted
	      against each rule.

       -A     Display packet authentication statistics.

       -C     This option is only  valid  in  combination  with	 -t.   Display
	      "closed"	states	as well	in the top. Normally, a	TCP connection
	      is not displayed when it reaches the CLOSE_WAIT protocol	state.
	      With this	option enabled,	all state entries are displayed.

       -d     Produce debugging	output when displaying data.

       -D <addrport>
	      This  option  is	only  valid  in	combination with -t. Limit the
	      state top	display	to show	only state entries  whose  destination
	      IP  address  and	port match the addrport	argument. The addrport
	      specification is of the form  ipaddress[,port].	The  ipaddress
	      and  port	should be either numerical or the string "any" (speci-
	      fying any	IP address resp. any port). If the -D  option  is  not
	      specified, it defaults to	"-D any,any".

       -f     Show  fragment  state  information  (statistics)	and held state
	      information (in the kernel) if any is present.

       -g     Show groups currently configured (both active and	inactive).

       -h     Show per-rule the	number of times	each one scores	a "hit".   For
	      use in combination with -i.

       -i     Display the filter list used for the input side of the kernel IP
	      processing.

       -I     Swap between retrieving "inactive"/"active" filter list details.
	      For use in combination with -i.

       -n     Show the "rule number" for each rule as it is printed.

       -o     Display  the  filter list	used for the output side of the	kernel
	      IP processing.

       -P <protocol>
	      This option is only valid	in  combination	 with  -t.  Limit  the
	      state  top  display to show only state entries that match	a spe-
	      cific protocol. The argument can be a protocol name (as  defined
	      in  /etc/protocols)  or a	protocol number. If this option	is not
	      specified, state entries for any protocol	are specified.

       -R     Don't try	to resolve addresses to	hostnames and  ports  to  ser-
	      vices while printing statistics.

       -s     Show packet/flow state information (statistics only).

       -sl    Show  held  state	 information (in the kernel) if	any is present
	      (no statistics).

       -S <addrport>
	      This option is only valid	in  combination	 with  -t.  Limit  the
	      state  top  display  to  show only state entries whose source IP
	      address and port match the addrport argument. The	addrport spec-
	      ification	 is  of	 the form ipaddress[,port].  The ipaddress and
	      port should be either numerical or the string "any"  (specifying
	      any  IP  address resp. any port).	If the -S option is not	speci-
	      fied, it defaults	to "-S any,any".

       -t     Show the state table in a	way similar to the  way	 top(1)	 shows
	      the  process  table. States can be sorted	using a	number of dif-
	      ferent ways. This	option requires	curses(3) and needs to be com-
	      piled  in. It may	not be available on all	operating systems. See
	      below, for more information on the keys that can be  used	 while
	      ipfstat is in top	mode.

       -T <refreshtime>
	      This  option is only valid in combination	with -t. Specifies how
	      often the	state top display should be updated. The refresh  time
	      is the number of seconds between an update. Any positive integer
	      can be used. The default (and minimal update time) is 1.

       -v     Turn verbose mode	on.  Displays more debugging information.

SYNOPSIS
       The role	of ipfstat is to display current kernel	statistics gathered as
       a  result of applying the filters in place (if any) to packets going in
       and out of the kernel.  This is the default operation when  no  command
       line parameters are present.

       When  supplied  with  either -i or -o, it will retrieve and display the
       appropriate list	of filter rules	currently installed and	in use by  the
       kernel.

       One  of	the statistics that ipfstat shows is ticks.  This number indi-
       cates how long the filter has been enabled.  The	number is  incremented
       every half-second.

STATE TOP
       Using the -t option ipfstat will	enter the state	top mode. In this mode
       the state table is displayed  similar  to  the  way  top	 displays  the
       process	table.	The  -C, -D, -P, -S and	-T command line	options	can be
       used to restrict	the state entries that will be shown  and  to  specify
       the frequency of	display	updates.

       In state	top mode, the following	keys can be used to influence the dis-
       played information:

       b show packets/bytes from backward direction.

       f show packets/bytes from forward direction. (default)

       l redraw	the screen.

       q quit the program.

       s switch	between	different sorting criterion.

       r reverse the sorting criterion.

       States can be sorted by protocol	number,	by number of  IP  packets,  by
       number  of bytes	and by time-to-live of the state entry.	The default is
       to sort by the number of	bytes. States are sorted in descending	order,
       but you can use the r key to sort them in ascending order.

STATE TOP LIMITATIONS
       It is currently not possible to interactively change the	source,	desti-
       nation and protocol filters or the refresh frequency. This must be done
       from the	command	line.

       The  screen must	have at	least 80 columns. This is however not checked.
       When running state top in IPv6 mode, the	screen must be much  wider  to
       display the very	long IPv6 addresses.

       Only  the first X-5 entries that	match the sort and filter criteria are
       displayed (where	X is the number	of rows	on the display.	The  only  way
       to see more entries is to resize	the screen.

FILES
       /dev/kmem
       /dev/ipl
       /dev/ipstate
       /kernel

SEE ALSO
       ipf(8)

BUGS
       none known.

								    ipfstat(8)

NAME | SYNOPSIS | DESCRIPTION | OPTIONS | SYNOPSIS | STATE TOP | STATE TOP LIMITATIONS | FILES | SEE ALSO | BUGS

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