block in proto icmp from any to any icmp-type echo
pass in proto icmp from any to any icmp-type echo
block in proto icmp from any to any icmp-type unreach code 3
pass in proto icmp from any to any icmp-type unreach code 3
block in proto icmp from any to any icmp-type echorep
pass in proto icmp from any to any icmp-type echorep
pass in proto icmp all icmp-type maskreq keep state
pass in proto icmp all icmp-type timest keep state
pass in proto icmp all icmp-type inforeq keep state