I've had really good results at Kiva with Project Honeypot and http:bL but have also implemented a local management for whitelisting/blacklisting IPs to work around what it misses or is overzealous on.
I've had really good results at Kiva with Project Honeypot and http:bL but have also implemented a local management for whitelisting/blacklisting IPs to work around what it misses or is overzealous on.