Mine

### MACROS ###
ext_if = "tun0"
int_if = "fxp0"
open_server_ports= "{21, 22, 80}"
high_ports = "{6667, 5223}"
med_ports = "{21, 25, 80, 110, 995}"
icmp_types = "echoreq"
comp_net = "{ 192.168.2.11, 192.168.2.12, 192.168.2.20, 192.168.2.21 }"
comp_main = "192.168.2.10"
block_policy = "return"

### OPTIONS ###
set block-policy $block_policy
set loginterface $ext_if
set skip on lo

### NORMALIZATION ###
scrub in

### ALTQ ###
altq on tun0 cbq bandwidth 128Kb queue {std_out, tcp_ack_out, main_out, net_out}
queue std_out bandwidth 20% cbq(red default borrow)
queue tcp_ack_out bandwidth 40% cbq(borrow red)
queue main_out bandwidth 30% cbq(borrow red) {high_main_out, med_main_out, low_main_out}
        queue high_main_out bandwidth 50% cbq(borrow red)
        queue med_main_out bandwidth 30% cbq(borrow red)
        queue low_main_out bandwidth 20% cbq(borrow red)
queue net_out bandwidth 10% cbq(borrow red)

altq on fxp0 cbq bandwidth 100% queue {std_in, net_in}
queue std_in bandwidth 99Mb cbq(default borrow red)
queue net_in bandwidth 512Kb {std_net_in, main_net_in, nat_net_in}
        queue std_net_in bandwidth 30% cbq(red borrow red)
        queue nat_net_in bandwidth 20% cbq(borrow red)
        queue main_net_in bandwidth 40% cbq(borrow red) {high_main_in, med_main_in, low_main_in}
                queue high_main_in bandwidth 50% cbq(borrow red)
                queue med_main_in bandwidth 30% cbq(borrow)
                queue low_main_in bandwidth 20% cbq(borrow)

### NAT ###
nat on $ext_if from $comp_net to any -> ($ext_if:0)
nat on $ext_if from $comp_main to any -> ($ext_if:0)

### REDIRECTS ###
# PROXY
rdr on $int_if proto tcp from $comp_main to !$int_if port 80 -> 127.0.0.1 port 8080

### FILTERING ###
block on $ext_if all

# ROUTER OUT EXT
pass out on $ext_if proto tcp from ($ext_if:0) to any flags S/SA keep state queue tcp_ack_out
pass out on $ext_if proto {udp, icmp} from ($ext_if:0) to any keep state

# MAIN COMP OUT EXT
pass out on $ext_if from ($ext_if:0) to any keep state
pass out on $ext_if from $comp_main to any keep state
pass out on $ext_if proto tcp from $comp_main to any flags S/SA keep state queue tcp_ack_out
pass out on $ext_if from $comp_main to any keep state queue low_main_out
pass out on $ext_if proto {tcp, udp} from $comp_main to any port $med_ports keep state queue med_main_out
pass out on $ext_if proto {tcp, udp} from $comp_main to any port $high_ports keep state queue high_main_out

# NAT OUT EXT
pass out on $ext_if from $comp_net to any keep state queue net_out

# MAIN COMP IN EXT
pass out on $int_if from any to $comp_main keep state queue low_main_in
pass out on $int_if proto {tcp, udp} from any port $med_ports to $comp_main keep state queue med_main_in
pass out on $int_if proto {tcp, udp} from any port $high_ports to $comp_main keep state queue high_main_in

# NAT IN EXT
pass out on $int_if from any to $comp_net keep state queue nat_net_in