mailing list archives
Re: icmp echo-requests?
From: "zhaol" <joe () rdsk net>
Date: Mon, 25 Nov 2002 11:39:27 +0800
IMHO, some scanners use ping to test if the scanning applicable before they
start scanning. FYI.
----- Original Message -----
From: "JR" <jr () secureity de>
To: <security-basics () securityfocus com>
Sent: Wednesday, November 20, 2002 4:21 PM
Subject: icmp echo-requests?
in my firewall logs I see a lot of echo-requests within the internal network. Of course, the simplest answer to these
events is that pings are causing these events. But on these machines definitely no pings are startet to that times.
Is it possible that other kind of programs are using echo-requests? What kind of programs are using echo-requests
and why? Checking wether the other host ist up? What if the firewall is filtering echo-requests? The program would
think that the host is down...
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