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Date:      Thu, 22 Mar 2001 17:45:37 -0300
From:      "Ronan Lucio" <ronan@melim.com.br>
To:        <security@freebsd.org>
Subject:   Re: DoS attack - advice needed
Message-ID:  <007101c0b311$0d67db60$2aa8a8c0@melim.com.br>

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Sorry,

I´d like say to allow the follow icmptypes:

3 (destination unreachable)
4 (source quench)
11 (ttl exceeded)
12 (ip header bad)

I think it´s enough to cause no problem to the system and
block ping packets

Ronan Lucio

> If I add a rules:
>
> ipfw add pass icmp from any to my.ip.adress icmptypes 3
> ipfw add deny icmp from any to mu.ip.adress
>
> Will it resolve the problem of fragmented packets?
>
> Ronan Lucio



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