nginx reverse proxy port

In Internet technology, reverse proxy servers play a very important role in accepting external requests and then forwarding them to servers in the internal network. As a widely used high-performance web server, nginx also has powerful reverse proxy features that can help us realize a variety of complex proxy needs.

To configure the reverse proxy feature of nginx, you first need to understand how to do port mapping. Port mapping is the process of sending external requests to a specified port, and it is relatively simple to do in nginx.

How to map nginx reverse proxy ports

First, in the nginx configuration file, we need to define a new server block to handle the reverse proxy configuration. Assuming we have an application running on port 8000 on an internal server that we want to serve externally through nginx, we can configure it like this:

"`nginx
server {
listen 80.
server_name example.com.

location / {
proxy_pass http://localhost:8000.
proxy_set_header Host $host.
proxy_set_header X-Real-IP $remote_addr.
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
}
}
“`

In this configuration, we have nginx listening on port 80 via the listen directive, and then define a server_name indicating that we want to be accessed via the domain example.com. In the location block, we use proxy_pass to forward the request to http://localhost:8000这个地址 and set up some request headers to ensure that the original client's address is passed correctly to the internal server.

After the configuration is complete, we just need to reload the configuration file of nginx, and then we can realize the reverse proxy function of the external service. Through this simple configuration, we can realize the external request through the nginx reverse proxy to the internal server of the specified port, to achieve flexible and efficient proxy services.