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Old 10-18-2004, 07:24 PM   #1
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iptables DROP icmp applied, still being pinged

I can't get iptables to work, I tried this easy example just to start, but the box is still pingable.

iptables -A INPUT -s 24.x.x.x -p ICMP -j DROP

I am still pingable from 24.x.x.x machine

I also tried exclusively,

iptables -A INPUT -p ICMP -j DROP

Last edited by linuxistan; 10-18-2004 at 07:27 PM.
Old 10-18-2004, 07:26 PM   #2
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correction: I am still pingable from 24.x.x.x machine.
Old 10-18-2004, 08:47 PM   #3
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The order of the rules in iptables matters. Is there a rule ahead of your icmp rule that could be accepting the packets?
Old 10-18-2004, 10:26 PM   #4
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echo 1 > /proc/sys/net/ipv4/icmp_echo_ignore_all


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