Replace router for pfsense.

[dgiorgio]

'll need 3 network interfaces?

WAN - modem (DHCP)
LAN - static ip - dhcp server
OPT1 - modem (DHCP)

Am I correct?
How to configure for this to work? I have to use NAT?

I am currently with a router/firewall (SonicWALL), I'll exchange it for pfSense.

[mrbnet]

This is a pretty common setup with pfsense and there is quite a bit of documentation out there. If you're using hardware which supports VLANs, you could setup 2 physical interfaces- one for your modems and the other for your LAN. Checkout the link to the docs below.

http://doc.pfsense.org/index.php/Multi-WAN_2.0

[dgiorgio]

modems are cable-modem

pfSense will be virtualized in vmware or virtualbox.

as I set in virtualbox?

NIC1 - bridged mode - em0 - IP cable modem
NIC2 - bridged mode - em1 - IP Static
NIC3 - bridged mode - OPT1 -

virtualbox is running on windows xp.

pfsense (em0) can not get the IP of the cable modem.

[dgiorgio]

as would be ideal?

I have to use vswitch?

NAT interface is an alternative?

NIC1 - NAT mode - em0 -
NIC2 - bridged mode - em1 - IP Static
NIC3 - NAT mode - OPT1 -

or

NIC1 - NAT mode - em0 -
NIC2 - bridged mode - em1 - IP Static