The change add a configurable check to block abusive IPs thru service ipregistry.co
It works like follows: when a post is made, the poster's IP is verified thru external service.
Results are checked against 5 categories: Abuser, Vps, Proxy, Tor, and Vpn.
Depending on the atom configuration, ether category can be blocked.
Results are cached into local database, so only each unique post request consumes a ip lookup. Services provides 100000 lookups for free, so we should be good for like ever.
The change add a configurable check to block abusive IPs thru service ipregistry.co