To begin accessing the system logs, first navigate to Status | System Logs. There are several tabs in this section. The default tab is System, but you will likely want to narrow your focus. Fortunately, different subcategories (for example,, Firewall and DHCP) have their own tabs where you can view only log entries related to such activity. This simultaneously makes it easier to find log activity for a specific subcategory while also reducing clutter on the System tab. The System tab is itself divided into several subcategories (currently, General, Gateways, Routing DNS Resolver, and Wireless).
The way pfSense logs are stored is designed to not overflow available disk space. As a result, the logs have a binary circular log file ...