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[linux-security] ICMP

daemon@ATHENA.MIT.EDU (wulfman)
Tue Feb 29 01:58:04 2000

Message-ID: <38BB4867.3770A005@wulfman.com>
Date: Mon, 28 Feb 2000 20:17:43 -0800
From: wulfman <wulfman@wulfman.com>
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To: "linux-security@redhat.com" <linux-security@redhat.com>
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Resent-From: linux-security@redhat.com

After the recent attacks on the major servers on the web my ISP has
decided to stop all ICMP messages from his ISP.

I have red the RFCs and it seems that he cant do that... As a result
pings and traceroutes will not work.

I need a friendly person out there to tell me a way to break the news to
him that he has to allow ICMP packets

through his network... any suggestions would be helpfull

[mod: Ping and Traceroute not working is just that. However,
disabeling all ICMPs means he also broke path MTU discovery. -- REW]

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