User-Agent block is a PHP script that allows you to 'block' user-agents you specify, such as e-mail harvesting programs, and user-agents designed to copy your website. The script will detect the user-agent, and return a page that you can customize, telling them why they are not allowed to access this site. Requires PHP 3 or 4, and Apache.

PHP3 Cryption is a very hackable, insecure encryption function that shouldn't be used for anything of great importance. Though the encryption is good, it's not going to hold up to the rigors of sophisticated cracking procedures. That said, PHP3 Cryption is a great way to encrypt and decrypt strings. Unlike many crypt functions, this goes both ways. Based on a password, you can encrypt or decrypt. You can also decrypt or encrypt numerous time, through looping or other methods. The alphabet of characters is also changeable. All these things allow you to modify and solidify the encryption.

phpSecurity is meant to create a web based front end for security tools. Almost complete is a php'd nmap and being started is a php'd firewalk.

The PHP Firewall Generator is a simple PHP script that generates a firewall script for ipchains based firewalls. The script is created based on configuration rules entered by the user. The aim is to support a rule set similar to those supported by commercial Firewall systems, and have it easy to configure.