pflog man page on MirBSD

pflog man page on MirBSD

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PFLOG(4)		   BSD Programmer's Manual		      PFLOG(4)

NAME
     pflog - packet filter logging interface

SYNOPSIS
     pseudo-device pflog

DESCRIPTION
     The pflog interface is a pseudo-device which makes visible all packets
     logged by the packet filter, pf(4). Logged packets can easily be moni-
     tored in real time by invoking tcpdump(8) on the pflog interface, or
     stored to disk using pflogd(8).

     Each packet retrieved on this interface has a header associated with it
     of length PFLOG_HDRLEN. This header documents the address family, inter-
     face name, rule number, reason, action, and direction of the packet that
     was logged. This structure, defined in <net/if_pflog.h> looks like

	   struct pfloghdr {
		   u_int8_t	   length;
		   sa_family_t	   af;
		   u_int8_t	   action;
		   u_int8_t	   reason;
		   char		   ifname[IFNAMSIZ];
		   char		   ruleset[PF_RULESET_NAME_SIZE];
		   u_int32_t	   rulenr;
		   u_int32_t	   subrulenr;
		   u_int8_t	   dir;
		   u_int8_t	   pad[3];
	   };

EXAMPLES
	   # ifconfig pflog0 up
	   # tcpdump -n -e -ttt -i pflog0

SEE ALSO
     inet(4), inet6(4), netintro(4), pf(4), ifconfig(8), pflogd(8), tcpdump(8)

HISTORY
     The pflog device first appeared in OpenBSD 3.0.

MirOS BSD #10-current	      December 10, 2001				     1

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