Catching SQL Injection and other Malicious Web Requests

Question

I am looking for a tool that can detect malicious requests (such as obvious SQL injection gets or posts) and will immediately ban the IP address of the requester/add to a bl

Answer 1

Oracle has got an online tutorial about SQL Injection. Even though you want a ready-made solution, this might give you some hints on how to use it better to defend yourself.

Answer 2

One little thing to keep in mind: In some countries (i.e. most of Europe), people do not have static IP Addresses, so blacklisting should not be forever.