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Date: Sat, 11 Dec 2004 09:51:28 +0200
From: Vasil Dimov <vd@datamax.bg>
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Subject: need some advice on connections logs
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> Hello-
> 
> What is the best way to deal with getting logs for someone attacking my
> box?  I am not really sure, but I think it may involve tcpdump.  Is
> there any way to implement this so that it can be running before an
> attack happens?.....see the problem is, that I do not have physical
> access to the box and if it is taken down(unaccessible by remote means),
> I cannot log in to start a dump.  What can I do in this case, or what
> are my options, if I want to have the network connections dumped somehow
> with no intervention?....is that a tall order?
> 
> Thanks,
> Bob

See
ipfw(8)
and/or
ipf(8), ipf(5)
and/or
pfctl(8), pf.conf(5), pflogd(8) (5.x only)

Especially the log options for those facilities.
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