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[ubuntu] UFW: Allow ping requests only for specific host

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linux-howto

http://ubuntuforums.org – I am setuping my server and I must disable the ping requests for everyone except me and a list of hosts (aaa.bbb.ccc.ddd). I am using the tool ufw, on ubuntu server, I read that I have to comment those lines: ok icmp codes -A ufw-before-input -p icmp --icmp-type destination-unreachable -j ACCEPT -A ufw-before-input -p icmp --icmp-type source-quench -j ACCEPT -A ufw-before-input -p icmp --icmp-type time-exceeded -j ACCEPT -A ufw-before-input -p icmp --icmp-type parameter-problem -j ACCEPT -A ufw-before-input -p icmp --icmp-type echo-request -j ACCEPT, However, by doing that It w (Hardware)