Book Image

pfSense 2.x Cookbook - Second Edition

By : David Zientara
Book Image

pfSense 2.x Cookbook - Second Edition

By: David Zientara

Overview of this book

pfSense is an open source distribution of the FreeBSD-based firewall that provides a platform for ?exible and powerful routing and firewalling. The versatility of pfSense presents us with a wide array of configuration options, which makes determining requirements a little more difficult and a lot more important compared to other offerings. pfSense 2.x Cookbook – Second Edition starts by providing you with an understanding of how to complete the basic steps needed to render a pfSense firewall operational. It starts by showing you how to set up different forms of NAT entries and firewall rules and use aliases and scheduling in firewall rules. Moving on, you will learn how to implement a captive portal set up in different ways (no authentication, user manager authentication, and RADIUS authentication), as well as NTP and SNMP configuration. You will then learn how to set up a VPN tunnel with pfSense. The book then focuses on setting up traffic shaping with pfSense, using either the built-in traffic shaping wizard, custom ?oating rules, or Snort. Toward the end, you will set up multiple WAN interfaces, load balancing and failover groups, and a CARP failover group. You will also learn how to bridge interfaces, add static routing entries, and use dynamic routing protocols via third-party packages.
Table of Contents (18 chapters)
Title Page
Copyright and Credits
About Packt

Configuring SNMP

In this recipe, we will configure Simple Network Management Protocol (SNMP) for use in pfSense. SNMP is a standard protocol that enables SNMP clients to query status information on devices that support SNMP.

Getting ready

SNMP-managed networks consist of managed devices, software that runs on managed devices (known as agents), and software running on the manager, known as the network management station (NMS). Management data is stored in management information bases (MIBs), which are hierarchical structures.

Enabling SNMP on pfSense enables it to act as a network management station. SNMP is implemented on pfSense/FreeBSD via the bsnmpd service.

How to do it...

  1. Navigate to Services | SNMP.
  2. Check the Enable SNMP Daemon checkbox, as shown in the following screenshot:
  1. Leave the Polling Port set to the default value of 161.
  2. Optionally, enter a location and contact name in the System Location and System Contact edit boxes.
  3. In the Read Community String edit box, enter a passphrase. This...