Allow external access to the specified port on Windows native

Background: At present, the company has a public network Windows Server, with public IP and intranet IP, firewall has been opened

Requirements: 9999 ports need to be open

Scenario: Add a rule to the firewall's inbound rules to allow external access to port 9999

Issue: After adding a good rule, the 9999 port from the external Telnet server does not pass

WORKAROUND: When you create an inbound rule to specify the local address, not only the port can be specified, remember that the steps are as follows

Control Panel--System and security--windows Firewall--Advanced settings--inbound rules--new rules--ports--specific local ports (enter ports to open)--Allow connections--next--complete

Right-click the inbound rule you just established--properties--scope--Local IP address--The following IP address--Enter the IP address (meaning you want to open this port via which IP)

Allow external access to the specified port on Windows native