In this article, I describe a simple rule-based DoS attack-prevention shell script. However, the proposed shell script is not a perfect tool for preventing DoS attacks, but a powerful tool for alleviating DoS attacks overheads of the Linux servers significantly.

Apache server performance can be improved by adding additional hardware resources such as RAM, faster CPU, etc.

I tried to keep these htaccess code snippets extremely minimalistic. The focus here is not to explain Apache htaccess or httpd.conf, this is a list of best-practice Apache,htaccess code snippets.