What is the use of the option ‘Networks explicitly routed through this Gateway’ in Gateway configuration? This option is useful if you have defined multiple gateways. If you want to route the traffic generated from a particular source network or host via a particular link, add the required source network under the option ‘Networks explicitly routed through this Gateway’ for that particular gateway. This is called Source Network Routing. For example, if you want traffic generated from (source) IP 192.168.1.5 should always route through Gateway1 then go to Manage Gateway, click Gateway1 and add network 192.168.1.5/255.255.255.255 using Add Network option.