This Mutually Agreed Norms for Routing Security (MANRS) document provides guidance on how to deploy the measures required by MANRS and is targeted at stub networks and small providers. This document will also help in checking whether a network setup is conformant with MANRS.
Check out (https://www.manrs.org/) for information about how to modify your configuration to be in compliance with MANRS guidelines and make your network and the Internet more secure!