The www/mod_security3 port is not correctly named. It implies that it is a
module (to apache) but in reality it is a stand-alone solution that needs a
connector (in nginx or apache) to operate.
I'd like to rename www/mod_security3 to security/modsecurity3 which is more in
line with upstream naming, and add a www/mod_security3 port which is actually
the Apache connector libexec/apache24/mod_security.so which establishes the
connection. (from https://github.com/SpiderLabs/ModSecurity-apache)