I work for a small ISP and we have a mix of Mikrotik, cisco, arista and and in house hosted services like ntopng and librenms. Today we use local accounts on all of the devices or shared admin accounts. What is a good all in one solution or good guilds to setting up open source options like mix of freeipa/free-radius/samba-ad. This would be for internal users (less than 20) logging into gear.