Problem in using 2 wan links

policy routing?

I'm new to Sophos specially V19. Should I use SD-WAN for this purpose?

you add your websites as destinations. and you do policy routing. 

https://doc.sophos.com/nsg/sophos-firewall/20.0/help/en-us/webhelp/onlinehelp/AdministratorHelp/Routing/SDWANRoutes/RoutingSDWANRoutesAdd/index.html
https://techbast.com/2019/04/sophos-xg-firewall-how-to-create-policy-based-routes-with-firewall-rules.html

tried to put reference to Sophos own documentation but got flagged as spam. 

The robot is very agressive.

Ian

The 2nd link refers to previous versions (I used to do like this). In current versions, it seems that the process has changed.

I think you should be able to use SD-WAN routes for this. You can make a FQDN host (group) for the site(s) you want to route to the alternative gateway and use this in your SD-WAN route as the first route. Traffic matching this will either use the primary/backup gateways configured.

Then make a second SD-WAN route for the rest of the traffic and again select primary/backup gateways, but now switch primary and backup from the previous.

You can also leave the backup gateway to None to not even use the second gateway when the first gateway should go down.

Thanks. Sorry if my question is simple, but I wanted to know if I need a firewall rule for each SD-WAN route that I write as well?

And also, in this senario, should I put both WAN links in Active mode with equal weights?

Using SD-WAN routes you can decide what traffic will go to which gateway and the weights in the normal load balancer are not used for that.

You can also only create 1 SD-WAN route for traffic that should only ever use the same gateway and leave all the rest to the load balancer.