HP-UX IPFilter Version A.03.05.14 Administrator's Guide

HP-UX IPFilter Configuration Examples
example.7
Appendix A160
example.7
# block all ICMP packets.
#
block in proto icmp all
#
# allow in ICMP echos and echo-replies.
#
pass in on lan1 proto icmp from any to any icmp-type echo
pass in on lan1 proto icmp from any to any icmp-type echorep
#
# block all ICMP destination unreachable packets which are
# port-unreachables
#
block in on lan1 proto icmp from any to any icmp-type unreach
code 3