How can i create Virtual Gateways

Question

I have 4 NIC ( LAN - WAN - DMZ - GUEST ) and i have 3 DSL lines . 
 i already configrued multi Alias IPs for each DSL line on the WAN NIC . and only 1 Gateway 
 now how can i add the other 2 dsl gateways? 
 do i have to have 3 physical NICs to do that ? 
 
 Thanks

Kranthi · Answer

If you are using all the 4 NICs already, try terminating 3 ISPs in to seperate VLANS change the NIC 2 to any custom zone (could be your LAN or DMZ) and add VLANS to each of the ISP under the WAN zones you should be able to achieve what you need.