From mboxrd@z Thu Jan  1 00:00:00 1970
From: cc <cc@kdtc.net>
Subject: icmp echo requests
Date: Mon, 29 Sep 2003 14:15:51 +0800
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To: Netfilter Group <netfilter@lists.netfilter.org>

Hi,

I've been monitoring the NAT router with pktstat and am a little
perturbed to see quite a lot of icmp echo requests.  Now I've
setup my Linux firewall to reject icmp echo requests.

Is this the right(?)/correct/valid/appropriate thing to do?

Furthermore (just for clarification) using tcpdump, I get incoming
icmp echo requests, but no response from my firewall(good thing
right?.  This means the firewall is dropping/rejecting the
echo requests?


Here is the line from the firewall script:


iptables -A INPUT -i eth0 -p icmp --icmp-type 8 \
        -j REJECT --reject-with icmp-host-unreachable



Btw, I'm quite bothered about the pings.  It doesn't
look right.

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