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68 lines
1.2 KiB
68 lines
1.2 KiB
.TH NFNL_OSF 8 "" "@PACKAGE_STRING@" "@PACKAGE_STRING@"
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.SH NAME
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nfnl_osf \- OS fingerprint loader utility
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.SH SYNOPSIS
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.ad l
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.in +8
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.ti -8
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.B nfnl_osf
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.BI -f " fingerprints"
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[
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.B -d
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]
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.SH DESCRIPTION
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The
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.B nfnl_osf
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utility allows to load a set of operating system signatures into the kernel for
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later matching against using iptables'
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.B osf
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match.
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.SH OPTIONS
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.TP
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.BI -f " fingerprints"
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Read signatures from file
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.IR fingerprints .
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.TP
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.B -d
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Instead of adding the signatures from
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.I fingerprints
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into the kernel, remove them.
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.SH EXIT STATUS
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Exit status is 0 if command succeeded, otherwise a negative return code
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indicates the type of error which happened:
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.TP
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.B -1
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Illegal arguments passed, fingerprints file not readable or failure in netlink
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communication.
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.TP
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.B -ENOENT
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Fingerprints file not specified.
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.TP
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.B -EINVAL
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Netlink handle initialization failed or fingerprints file format invalid.
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.SH FILES
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An up to date set of operating system signatures can be downloaded from
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http://www.openbsd.org/cgi-bin/cvsweb/src/etc/pf.os .
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.SH SEE ALSO
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The description of
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.B osf
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match in
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.BR iptables-extensions (8)
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contains further information about the topic as well as example
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.B nfnl_osf
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invocations.
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