Firewall

One of the primary functions performed by pfSense® software is filtering traffic, deciding which traffic to pass or block between networks. This section covers fundamentals of firewall behavior, best practices, and required information necessary to configure firewall rules.

Managing Firewall Rules

Firewall rules control traffic passing through the firewall. These topics describe how to create and manage rules, plus settings related to rules.

Aliases

Aliases are collections of addresses that allow many hosts to be acted upon by a few firewall rules. They can greatly simplify a ruleset and make it easier to understand and manage.

Firewall Guides

How to perform various tasks with firewall rules.

Troubleshooting problems with firewall behavior.