Why does Nginx listen to port 80?

Question

    server {
        listen       80;
        server_name  manage.taotao.com;

        #charset koi8-r;

        #access_log  logs/host.access.log  main;

    proxy_set_header X-Forwarded-Host $host;
        proxy_set_header X-Forwarded-Server $host;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;

        location / {
        proxy_pass http://127.0.0.1:8080;
        proxy_connect_timeout 600;
        proxy_read_timeout 600;
        }
        
    }
    

What does listen here mean?

Answer 1

Because the default port of HTTP is 80 and the default port of HTTPS is 443.

Answer 2

This can be modified. The listen port 80 is just the default setting and it is also everyone’s agreement, because the entered domain name or IP defaults to access port 80. It doesn’t need to be displayed