ext_if="fxp0"
int_if="fxp1"
internal_net="10.11.12.0/24"
external_addr="192.168.1.17"

scrub in all

rdr on carp1 proto tcp from any to 192.168.1.13 port 80 -> 10.11.12.13 port 80

pass in all
pass out all