how to configure ipfw with 4 modems???

[m4st3rcr4zy]

hi guys sorry mi english is very bad, I have a problem with ipfw,the situation is.


I install freebsd 7.0 and I need connect 4 modems from the same isp, i need to balance the loads from the 4 modems.

I have this on rc.conf

firewall_logging="YES"
firewall_enable="YES" #habilitamos al cargar el sistema
firewall_type="simple" #tipo de proteccion
firewall_quiet="NO"

#configuracion de la red

gateway_enable="YES" #habilitar el gateway o sysctl net.inet.ip.forwarding=1
natd_enable="YES"
natd_interface="vr1" #interfaz q se conecta al modem
natd_flags="-u -m -dynamic"
network_interfaces="vr0 vr1 ed0 ed1 ed2 lo0"


and this on rc.firewall

ipfw -q add divert natd all from any to any via vr1

i need to balance the load from the 4 modems something like this

----------------|-----------------|--------- Router ADSL 1 (ed0)
(ed2)LAN -|---+ FreeBSD--|---------- Router ADSL 2 (ed1)
----------------|-----------------|--------- Router ADSL 3 (vr0)
----------------|-----------------|----------Router ADSL 4 (vr1)


my network has 98 computers and I need to balance the loads on 4 modems. the network is not segmented, it is one

but I can not find info. somebody helpme please.

freebsd is wonderful but sometimes difficult

forgiveness for my bad English
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