SterJo Portable Firewall PRO is device designed to prevent outsiders from accessing your network even if it is run from a USB drive. The unit serves as the single entry point to your network and evaluate all TCP connections requests as they are received comparing them with each rule in the policy. This is advanced easy-to-use software with ability to watch for all ports on your system and block them if necessary. - Activity provides a real-time view of the open connections through the firewall. - The policy editor is used to define a security policy where connections requests from unauthorized ip addresses and ports are rejected. - Log provides data connection notes that can be used for prosecuting the potential attackers. - History tab gives you information about the traffic and blocked attempts.