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Ipfirewall (ipfw) is a FreeBSD IP packet filter and traffic accounting facility.IPFW is included in the basic FreeBSD install as a separate run time loadable module.

This small howto covers building and installing a custom kernel with IPFW. It also provide a small example on how to setting up the rules for a typical FreeBSD based Apache Web server.

Tutorial to show howto:

* Collect information about the user during signup and store that information into MySQL
* Generate a random password and encrypt it into the database
* Validate the user's email address before they can login
* Create a login system for the user to validate his/her information against the database
* Create a lost password recovery tool
* Basic Form handling with PHP
* Some PHP Session basics
* Use the Mail function to send the user an email
* And Much more!