How to enable ufw firewall to allow icmp response?

Posted by Jeremy Hajek on Ask Ubuntu See other posts from Ask Ubuntu or by Jeremy Hajek
Published on 2010-10-14T00:08:46Z Indexed on 2012/08/31 15:53 UTC
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10.04

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server

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firewall

I have a series of Ubuntu 10.04 servers and each one has ufw firewall enabled. I have allowed port 22 (for SSH) and 80 (if it's a webserver). My question is that I am trying to enable icmp echo response (ping reply).

ICMP functions differently than other protocols--I know it is below the IP level in a technical sense. You can just type sudo ufw allow 22, but you cannot type sudo ufw allow icmp

How should attack this problem?

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