SG125 Two WAN links and two LAN links with a separate IP

Question

Hi, 
 I have SG125 currently with one Internet and one LAN network (192.168.5.x). I want to add an extra Internet link to the UTM and use this link for a different LAN (192.168.10.x) which has only camera connected to. 
 The setup I want to do is 
 - Get both Internet links (ADSL PPPoE) working at the same time and use primary link for office users (192.168.5.x) but use secondary link for only the camera LAN network (192.168.10.x). 
 Is it even possible to use both connections simultaneously? I can kinda think of using multipath rules combining two links as uplink interface. But I am not sure what would be the best solution. 
 Or is it also possible to connect both connections and add static route for the secondary link? 
 Any suggestions appreciated.

apijnappels · Accepted Answer

I don't have experience with PPPoE, but usually when you have 2 WAN interfaces they are both IPv4 Default gateways (and need to be configured as such). You can use multipath rules to configure which interface is used for which traffic. Or you can use masquerading to determine which LAN segment masquerades to which WAN connection.

BAlfson · Answer

Hi, Patrick, and welcome to the UTM Community! 
 Your last question was actually answered above by apijnappels, but you didn't realize it. There are two different approaches to using two WAN connections - Static Routing and Uplink Balancing with Multipath rules. In any case, you must use Masquerading or SNAT to replace internal IPs with ones that are routable on the Internet. 
 Uplink Balancing with Multipath rules really just creates lower- and higher-priority routes in the background - there's no magic. I prefer this approach so that I can have automatic failover if one of the two connections goes down. Yes, I could accomplish that with Static Routes, but that's complicated and inelegant. 
 Cheers - Bob