(GH/OSTWall is a firewall that allows you to block the communication between this machine and other machines. The primary design intent is to replace the standard Windows Firewall with better functionality and performance. Main table now: packet filtering for TCP/UDP/RAW and ICMP; 64-bit and 32-bit compatible; suitable for gamers and users who respond to requests at a lower time; only takes up extremely low system resources; automatically displays the corresponding IP address Country and region; select fast and effective encoding to minimize the impact of firewall on network response speed; display TCP/UDP/RAW and ICMP network speed; display TCP/UDP/RAW and ICMP data transmission volume; display TCP/UDP/ Final 50 intercept and pass packets for RAW and ICMP; panic button for easy opening of network connections and blocking of full connections. Modify the problem of adding ports in the rules, thank you a-bo friends for the tips.)