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Date:      Wed, 26 May 1999 14:05:14 +0200 (CEST)
From:      Martin Kammerhofer <dada@balu.kfunigraz.ac.at>
To:        security@FreeBSD.ORG
Subject:   Re: TCP connect data logger
Message-ID:  <Pine.BSF.3.96.990526135851.8495D-100000@localhost.kfunigraz.ac.at>
In-Reply-To: <19990525012032.A25197@fw.garman.net>

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On Tue, 25 May 1999, Jason Garman wrote:

> Last time I used this option (2.2.8-RELEASE), it only logged the packet
> headers to syslog.  Something like this:
> 
> Connection attempt to UDP x.x.x.x:port from y.y.y.y:port
> 
> theres also a tunable net.inet.tcp.log_in_vain which does the same thing
> for TCP packets.
> 

Both udp.log_in_vain and tcp.log_in_vain have *no* rate limiting.
Enabling them can generate huge amounts of LOG_INFO messages during
port scans.



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