NFNL_OSF
Section: iptables 1.8.7 (8)
Updated:
Page Index
NAME
nfnl_osf - OS fingerprint loader utility
SYNOPSIS
nfnl_osf
-f fingerprints
[
-d
]
DESCRIPTION
The
nfnl_osf
utility allows 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.