Manual: nfnl_osf

NFNL_OSF(8)				       iptables 1.8.11					 NFNL_OSF(8)

NAME
       nfnl_osf — OS fingerprint loader utility

SYNOPSIS
       nfnl_osf -f fingerprints [ -d ]

DESCRIPTION
       The nfnl_osf utility allows one to load a set of operating system signatures into the kernel for
       later matching against using iptables' osf match.

OPTIONS
       -f fingerprints
	      Read signatures from file fingerprints.

       -d     Instead of adding the signatures from fingerprints into the kernel, remove them.

EXIT STATUS
       Exit  status  is 0 if command succeeded, otherwise a negative return code indicates the type of error
       which happened:

       -1     Illegal arguments passed, fingerprints file not readable or failure in netlink communication.

       -ENOENT
	      Fingerprints file not specified.

       -EINVAL
	      Netlink handle initialization failed or fingerprints file format invalid.

FILES
       An up to date set of operating system signatures can be downloaded  from	 http://www.openbsd.org/cgi-
       bin/cvsweb/src/etc/pf.os .

SEE ALSO
       The  description	 of osf match in iptables-extensions(8) contains further information about the topic
       as well as example nfnl_osf invocations.

iptables 1.8.11											 NFNL_OSF(8)