Биллинговая система Nodeny

lan_net = "10.0.0.0/8"
int_if  = "nfe0"
ext_if1 = "tun0"
ext_if2 = "tun1"
ext_gw1 = "1.1.1.2"
ext_gw2 = "2.2.2.2"

set limit states 128000
set optimization aggressive

nat on $ext_if1 from $lan_net to any -> ($ext_if1)
nat on $ext_if2 from $lan_net to any -> ($ext_if2)

pass quick on lo0 all

pass in quick proto tcp from any to self port { 22 80 }  flags S/SA keep state

pass in quick on { $int_if ng } from $lan_net to self

pass in on { $int_if ng }  route-to { ($ext_if1 $ext_gw1), ($ext_if2 $ext_gw2) } round-robin proto tcp from $lan_net to any flags S/SA modulate state
pass in on { $int_if ng }  route-to { ($ext_if1 $ext_gw1), ($ext_if2 $ext_gw2) } round-robin proto { udp, icmp } from $lan_net to any keep state

pass out on $ext_if1 route-to ($ext_if2 $ext_gw2) from $ext_if2 to any
pass out on $ext_if2 route-to ($ext_if1 $ext_gw1) from $ext_if1 to any

200 skipto 500 ip from any to any { via tun0 or via tun1 }
400 skipto 450 ip from any to any { recv tun0 or recv tun1 }
2050  deny ip from any to any  { via tun0 or via tun1 }

ext_if1 = "tun0"
ext_if2 = "tun1"
ext_gw1 = "1.1.1.2"
ext_gw2 = "2.2.2.2"

set limit states 128000
set optimization aggressive

#  клиента-жертву натим по round-robin
nat on $ext_if1 from 10.1.1.1 to any -> { ($ext_if1) ($ext_if2) } round-robin
nat on $ext_if1 from 10.0.0.0/8 to any -> ($ext_if1)

#  route packets from any IPs on $ext_if1 to $ext_gw1 and the same for $ext_if2 and $ext_gw2
pass out on $ext_if1 route-to ($ext_if2 $ext_gw2) from $ext_if2 to any
pass out on $ext_if2 route-to ($ext_if1 $ext_gw1) from $ext_if1 to any

enable nas

set limit states 128000
set optimization aggressive
ext_if1="vlan666" #Vnutrenni
ext_if2="vlan64" #Vneshni
ext_gw1="xxx.xxx.xxx.xxx"
ext_gw2="yyy.yyy.yyy.yyy"
table <no_nat> const { 192.168.0.0/16}
scrub in all 

nat on $ext_if1 from 192.168.4.0/24 to !<no_nat> -> $ext_if2
nat on $ext_if1 from 192.168.5.0/24 to !<no_nat> -> $ext_if2
nat on $ext_if1 from 192.168.7.0/24 to !<no_nat> -> $ext_if2
nat on $ext_if1 from 192.168.9.0/24 to !<no_nat> -> $ext_if2
nat on $ext_if1 from 192.168.0.0/16 to !<no_nat> -> $ext_if1

pass out on $ext_if1 route-to ($ext_if2 $ext_gw2) from $ext_if2 to !<no_nat>
pass out on $ext_if2 route-to ($ext_if1 $ext_gw1) from $ext_if1 to !<no_nat>