Security Basics mailing list archives

Re: PIX firewall and ICMP


From: rogue <rogue () nocdemon net>
Date: Sun, 28 Sep 2003 07:25:04 -0400 (EDT)

my company's policy on ICMP is to open it explicitly to known Corp subnets
and block all else. even on a large network, that shouldnt be too hard.

On Fri, 26 Sep 2003, gregh wrote:


----- Original Message -----
From: "Cat Thrasher" <isd607 () co santa-cruz ca us>
To: "Security-Basics (E-mail)" <security-basics () securityfocus com>
Sent: Thursday, September 25, 2003 3:21 AM
Subject: PIX firewall and ICMP


Please advise your opinions on my problem. I had a permit statement on the
PIX that would allow ICMP from any to any. Since being > hit with Nachi, I
turned it off. I am being asked my policy on when it will be turned back on.
I have a rather large network and
many "divisions" who work independently, yet access the internet thru "my"
PIX. They like to use ping when trouble-shooting.
Can I get an opinion on whether or not I should turn this back on...
Thanks

Depends on the policies of the management of the company you work for. I
dont know any that graciously allow pix transferred through any longer but I
do know SOME where those pix are part of the critical work of the company. I
would be asking management and users what their needs are!

Greg.




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rogue () nocdemon net
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