OSEC

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Subject: Re: Setting up simple firewall with ipfw
From: Matthew Dillon (dillonapollo.backplane.com)
Date: Sat Jun 10 2000 - 14:04:15 CDT

    You also need to allow ICMP messages through, or TCP will not be
    able to do path-mtu-discovery. I usually let pings through as well.

add ..... allow icmp from any to any icmptypes 0,3,5,8,11,12,13,14

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