When using an integrated IIS server in a Windows environment, there is generally no problem of extranet unreachable, while using Apache, Kangle, LIGHTTPD, Niginx, Tomcat, and so on: The Web site can be accessed via the configured domain name on the server, ping the server IP, Site domain names are all-in-one, but the Web site on the host cannot be accessed remotely from the server.
Method 1: Turn off the Windows Server system with its own firewall
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Open Firewall found: Windows Firewall properties.
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Turn off the firewall in the public configuration file.
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Method 2: Increase the TCP80 port
Click the Add Port button in the system firewall settings; ()
Add web80 port (some Web servers need to open 8080 ports, etc., depending on the server);
Define a name for the port: Web, Description 80.
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Method 3: Service provider 80-port masking
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Not allowed by the Telecommunications Department (intranet exceptions) can only be accessed via an additional port.
Workaround for Windows Server extranet that does not have access to the Web