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To: gentoo-security@g.o
From: mickey@...
Subject: Re: firewall suggestions?
Date: Thu, 8 Jan 2004 09:34:49 -0700
Quoting "Thomas T. Veldhouse" <veldy@...>:
> > In "closing" ports, one has the option - nay one is recommended - to
> > use the "DROP" target which has the desired effect of which you speak.
> 
> It is probably a very good idea to actually REJECT ident (113/tcp) lookups
> rather than drop them.  It is very common to have reverse ident lookups do
> to your activity, and a DROP will cause a delay that is not needed.  This
> particular item is normal and not a security concern in and of itself.  As a
> matter of fact, it is so common, it is good to not even log it.

Good advice.  I will heed it.

So, accept 113/tcp and ICMP packets.  Anything else?  Oh, a judicious use of
"--limit" may also be a good idea.

dreamwolf

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Updated Jun 17, 2009

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