Open Source Firewall- pfSense
pfSense is a free, open source customized distribution of FreeBSD tailored for use as a firewall and router. In addition to being a powerful, flexible firewalling and routing platform, it includes a long list of related features and a package system allowing further expandability without adding bloat and potential security vulnerabilities to the base distribution

Have you considered using an open source firewall/router solution for securing your network traffic? Check out the features and performance of a free open source firewall/router solution
Features
- Firewall
- Network Address Translation (NAT)
- Redundancy
- Load Balancing
- VPN
- Reporting and Monitoring RRD Graphs
- Real Time Information
- Dynamic DNS
- DHCP Server and Relay

LOGS

The following outlines the minimum hardware requirements for pfSense 1.2
CPU – 100 MHz Pentium
RAM – 128 MB
CD-ROM drive
1 GB hard drive
pfSense includes most all the features in expensive commercial firewalls, and more in many cases.All of these things are possible in the web interface, without touching anything at the command line
