The internal network of the server can be accessed, but the external network cannot be accessed

1. First, make sure whether the content of the server deployment is correct
windows The environment is usually in iis Service deployment

Shortcut key win+R, Input inetmagr

Display page ：

Click the triangle , Find the responsible project website

Click to browse the website

If the displayed item has a page , Prove that there is no problem with deployment

2. Troubleshooting firewall

Search directly in the search box in the lower left corner of the computer " Advanced security windows defender A firewall "

See if it is restricted

3. Check whether the domain name accessed by the Internet is invalid

Third party tools can be borrowed for detection