# Engine Editor > Routing > Policy Routing

Use this branch to define policy routing for the Security Engine.

Option | Definition
--- | ---
IPv4 Policy Routes or IPv6 Policy Routes | Enter the routing information in the appropriate table. Click Add to add a row to the table, or Remove to remove the selected row. Click Up or Down to move the selected element up or down.
Source IP Address | Enter the source IP address. This IP address is always something other than the default 0.0.0.0 that matches any IP address. Such configurations can be handled more easily with the normal routing tools in the Routing pane.
Source Netmask (IPv4 only) | Enter the netmask for the source IP address.
Source Prefix (IPv6 only) | Enter the network prefix for the source IP address.
Destination IP Address | Enter the destination IP address.
Destination Netmask (IPv4 only) | Enter the netmask for the destination IP address.
Destination Prefix (IPv6 only) | Enter the network prefix for the destination IP address.
Gateway IP Address | Enter the IP address of the device to which packets that match the source/destination pair are forwarded.
Comment (Optional) | A comment for your own reference.