Hi, At the moment Im using freeradius 3.0.10 to identify hotspot users from over 400 mikrotiks. Its working fins but because all the routers are behind NAT IPS providers some of them uses the same local IP (nasipaddress). Im trying to change this creating VPN tunnels from mikrotik to radius server and assign unique IP to each hotspot mikrotik. I will identify this VPN clients throw radius as well. I dont want to use the same database from hotspot users and VPN-routers so I will create a new database and change configuration to setup freeradius to use 2 database. I will change on /mods-available/sql.conf to use sql hotspotdb {..} and sql vpndb {..} and pointing each one to a different database. For the moment I only want to use vpndb to authentificate not accounting So on sites-available/default I should change sql to hotspotdb and vpndb . Here are my questions. 1) Ive seen on sites-available/default authorize section sql, here is where I have to change to hotspotdb vpndb ? 2) On the other sections a have to change from sql à to hotspotdb .. anywhere else ? 3) This is most important how works authorization: When trying to authorize always check both databases ? Or if the first database return ok then doesnt query the second one. The best option will be with ULANG that Im not really familiarized with how I can know if a auth query comes to query a hotspot user or a VPN user .. maybe with nasipaddress or framedipaddress So what I should write on authorize section: If {% nasipaddress ?? } then - hotspotdb Else vpndb End if Thanks a lot !