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

HP-UX IPFilter Configuration Examples
example.8
Appendix A 161
example.8
#
# block all incoming TCP connections but send back a TCP-RST
# for ones to the ident port
#
block in proto tcp from any to any flags S/SA
block return-rst in quick proto tcp from any to any port = 113
flags S/SA
#
# block all inbound UDP packets and send back an ICMP error.
#
block return-icmp in proto udp from any to any