How to set up a proxy server on Linux

How to set up a proxy server on Linux

A proxy server is a network service that allows users to access the Internet through the server. When using a proxy server, the user's real IP address is hidden, thereby improving network security and protecting personal privacy. Setting up a proxy server on a Linux system is relatively simple. This article will introduce a common setting method and provide code examples for reference.

Step 1: Install Squid proxy server
First, you need to install a proxy server named Squid. Run the following command in the terminal to install Squid:

sudo apt-get install squid

Step 2: Configure the Squid proxy server
Open the following file to edit Squid’s configuration file:

sudo nano /etc/squid/squid.conf

Find the following lines, and Make sure their contents are set correctly, or adjust as needed:

http_port 3128
acl mynetwork src 192.168.0.0/16
http_access allow mynetwork

In the above code, http_port specifies the port that the proxy server listens to, the default is 3128; acl mynetwork src 192.168.0.0/16 defines allowed access The IP address range of the proxy server; http_access allow mynetwork means that only devices in this IP address range are allowed to access the network through the proxy server.

Step 3: Restart the Squid proxy server
After editing the configuration file, you need to restart the Squid proxy server for the changes to take effect. Run the following command:

sudo service squid restart

Step 4: Configure the network proxy
Now, you need to configure the network proxy in the system settings so that all network requests go through the proxy server. Open system settings and find network settings or proxy settings. Depending on the Linux distribution and desktop environment you are using, this setting may be in a different menu.

In network proxy settings, there are usually two types of proxies to choose from: HTTP proxy and SOCKS proxy. Select HTTP proxy and fill in the IP address and port number of the proxy server (default is 3128). Click the Apply or Save button to save the settings.

Step 5: Test the proxy server
After the settings are completed, you can use a browser or terminal to test whether the proxy server is working properly. Visit a web page in the browser, or try using tools such as curl in the terminal to make network requests. If everything works fine, you will have network access through the proxy server.

Summary:
Setting up a proxy server on Linux is relatively simple. First install the Squid proxy server and then configure it as needed. Finally, configure the network proxy in the system settings so that all network requests go through the proxy server. With this setup, you can achieve more secure and private network access. I hope the code examples and step-by-step instructions in this article are helpful to you.

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