How to fix ” An appropriate representation of the requested resource could not be found on this server. This error was generated by Mod_Security.” error?
Servers with mod_security - Troubleshooting Installation | MODX Documentation
How to Install & Configure ModSecurity on Nginx
ModSecurity Handbook: The Complete Guide to the Popular Open Source Web Application Firewall by Ivan Ristic (2010-03-15): Amazon.com: Books