How to Block 100,000+ Individual IP addresses

Question

Introduction

How do you Block large number of IP address from your web application/server. Obviously that can easily be done in P

Answer 1

Do a geo-lookup on the IPs in your list. My own experience has shown most malicious (i.e. spam) connections have originated from China. If you find the same to be the case for you, and you have no specific need to serve China, see if you can efficiently block the entire country at the firewall level.