After you download and install the ProtoPort Personal Firewall software, you computer will be protected against hacker attacks. All network traffic is monitored on lowest possible level ensuring all unwanted network packets are kept off your computer. Native support of all popular protocols (ARP, IP, TCP, UDP, ICMP, etc). The program can also limit network bandwidth for specified applications, block online ads, block cookies, ActiveX, Flash movies, Java and Visual Basic scripts.