Date: Sun, 17 Jan 1999 14:59:26 -0500 (EST) From: Snob Art Genre <benedict@echonyc.com> To: "N. N.M" <madrapour@hotmail.com> Cc: freebsd-security@FreeBSD.ORG Subject: Re: Small Servers - ICMP Redirect Message-ID: <Pine.GSO.4.05.9901171458140.22702-100000@echonyc.com> In-Reply-To: <19990117094320.20052.qmail@hotmail.com>
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On Sun, 17 Jan 1999, N. N.M wrote: > 1) Might it be any problem in connectivity and services, if I block all > traffic to (TCP/UDP) Small servers like echo, chargen, .... on firewall? Not a problem, go ahead. > 2) About ICMP redirect messages, as I learned they could be used to make > our network disconnected and somthing. What's the way to prevent this > kind of attack? Does blocking this kind of ICMP on firewall and routers > cause any problem in connectivity and system behavior? I would block these messages from entering my network, absolutely. Ben "You have your mind on computers, it seems." To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-security" in the body of the message
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