Re: Passive OS fingerprint xtables match.

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Evgeniy Polyakov wrote:
> Hi.
> 
> Passive OS fingerprinting netfilter module allows to passively detect
> remote OS and perform various netfilter actions based on that knowledge.
> This module compares some data (WS, MSS, options and it's order, ttl, df
> and others) from packets with SYN bit set with dynamically loaded OS
> fingerprints.
> 
> Fingerprint matching rules can be downloaded from OpenBSD source tree
> and loaded via netlink connector into the kernel via special util found
> in archive. It will also listen for events about matching packets.

I like this feature. We have nfnetlink so I don't see why we should use
the netlink connector instead.

BTW, is there any difference with regards to userspace p0f apart from
having this integrated into iptables?

-- 
"Los honestos son inadaptados sociales" -- Les Luthiers
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