Security Basics mailing list archives
RE: PIX firewall and ICMP
From: Steve Marin <steve () skabnmarin com>
Date: Thu, 25 Sep 2003 17:24:42 EST
Hi guys, I could not help but notice you said you were hit with the Nachi worm, while a PIX box was in place. If you would like a Firewall that cannot be penetrated by those worms let me know. I offer a managed firewall that does both IDS and Proxy. I have over 140 of them in place in buisnesses from large manufactures to banks to small businesses. Not one of them were infected by the blaster, Nachia or SoBig. Matter of fact I have the industy leading guarantee, that if any of your servers get's hacked while my Firewall is in place we will pay you 1,000 US dollars per incident. Kindest regards, Steve Marin
Hi If your divisions uses ping to trouble shoot you can allow a
specific
type of ICMP and not ICMP as all , how about something like this : access-list outside permit icmp any any echo-reply this way you can allow only Echo-reply to the system without the
need to
open all types of ICMP toward the network. Hope this been helpful -----Original Message----- From: Cat Thrasher [mailto:isd607 () co santa-cruz ca us] Sent: Wednesday, September 24, 2003 7:22 PM To: Security-Basics (E-mail) 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 Cat Thrasher Network Support Analyst County of Santa Cruz 831-454-5367 cat.thrasher () co santa-cruz ca us --------------------------------------------------------------------
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Current thread:
- PIX firewall and ICMP Cat Thrasher (Sep 24)
- Re: PIX firewall and ICMP Daniel Williams (Sep 24)
- Re: PIX firewall and ICMP gregh (Sep 26)
- Re: PIX firewall and ICMP rogue (Sep 29)
- Re: PIX firewall and ICMP John Hollyoak (Sep 29)
- <Possible follow-ups>
- RE: PIX firewall and ICMP Tenorio, Leandro (Sep 24)
- RE: PIX firewall and ICMP Charlie Winckless (Sep 24)
- Re: PIX firewall and ICMP Darrell Porter (Sep 25)
- RE: PIX firewall and ICMP Maher Odeh (Sep 25)
- RE: PIX firewall and ICMP Steve Marin (Sep 26)
- Re: PIX firewall and ICMP Brian Ford (Sep 26)
- RE: PIX firewall and ICMP dave hartnell (Sep 29)
- RE: PIX firewall and ICMP rogue (Sep 29)
- RE: PIX firewall and ICMP Cat Thrasher (Sep 29)
