Date: Sun, 17 Jan 1999 18:09:14 -0500 (EST) From: Garrett Wollman <wollman@khavrinen.lcs.mit.edu> To: "Daniel O'Callaghan" <danny@hilink.com.au> Cc: freebsd-security@FreeBSD.ORG Subject: Re: Small Servers - ICMP Redirect Message-ID: <199901172309.SAA09685@khavrinen.lcs.mit.edu> In-Reply-To: <Pine.BSF.3.96.990118085344.15297A-100000@enya.clari.net.au> References: <007701be4256$f01ff740$02c3fe90@cisco.com> <Pine.BSF.3.96.990118085344.15297A-100000@enya.clari.net.au>
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<<On Mon, 18 Jan 1999 08:54:45 +1100 (EST), "Daniel O'Callaghan" <danny@hilink.com.au> said: > It will also block useful things like source-quench. ICMP exists for a > reason. Actually, it will block useful things like `destination unreachable' and `fragmentation required'. Source Quench is not useful -- just ask any router vendor. As a general rule, you should accept all UNREACHABLE, TIME EXCEEDED, and PARAMETER PROBLEM messages, might or might not accept ECHO REQUEST and ECHO RESPONSE, and should drop all others. -GAWollman -- Garrett A. Wollman | O Siem / We are all family / O Siem / We're all the same wollman@lcs.mit.edu | O Siem / The fires of freedom Opinions not those of| Dance in the burning flame MIT, LCS, CRS, or NSA| - Susan Aglukark and Chad Irschick To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-security" in the body of the message
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