Set the default virtual host (empty host header, default host header) for Nginx _nginx

The most important thing is to add this line to the server's settings:
Listen default;
The following default parameter indicates that this is the default virtual host.

This setting is very useful.
For example, when someone accesses your website via IP or unknown domain name, you want to suppress any valid content and return 500 to him.
At present, a lot of domestic computer rooms are required to shut down the main web site, to prevent the record of the domain name to cause trouble. You can set it this way:

Copy Code code as follows:

server {
Listen default;
return 500;
}

You can also collect these traffic, import to their own website, as long as the following jump settings can be:

Copy Code code as follows:

server {
Listen default;
Rewrite ^ (. *) http://www.jb51.net permanent;
}