I preferred use our core router for this matter, it's less load for our checkpoint FW to summarize the LAN or router to ISP's, but you can use WebUI to do this or CLI.
Our current ver 80.10 t support:
Configuring Inbound Route Filters - Gaia Portal
Configuring Inbound Route Filters - Gaia Clish
Configuring Route Redistribution - Gaia Portal
Configuring Route Redistribution - Gaia Clish
Configuring Route Maps - Gaia Clish (routemap)
Every things found in: Gaia Advanced Routing R80.10 Administration Guide.
HTH