The SoftPerfect Personal Firewall is a free network firewall designed to protect your PC against attacks from the Internet or via a local area network. SoftPerfect Personal Firewall offers customizable security using user-defined rules for packet filtering. It works at a low level and also allows you to create rules based on non-IP protocols such as ARP. The SoftPerfect Personal Firewall supports multiple network adapter configurations. This allows you to apply a rule, for example, for just a modem connection or you could apply separate rules for each system interface. With a flexible filtering system, trusted MAC address checking feature and separate network adapter configuration you can even use it on a router or a server. The SoftPerfect Personal Firewall has a learning mode, which prompts you for required actions when it detects an unknown packet. This helps you to create customized rules quickly. The program is easy to use, comes with a set of predefined rules and it is completely free. Additional features include password protection, logging and more. Please be aware that the SoftPerfect Personal Firewall is not designed for novices and requires some networking knowledge from you for a correct configuration.