What does a SOCKS5 proxy do?
Socks5 is the first version of the socks protocol family. It is the family of protocols used to establish a connection between an ordinary client like your web browser and a server. A SOCKS5 proxy is a bit special. It is a SOCKS5 server that sits in between your local network and the remote network. It establishes a SOCKS5 connection between you and the remote network. Because of this, it will give you an encrypted connection between you and your remote network which gives you advantages over a regular SOCKS5 connection.
Download the demo. The SOCKS5 protocol. SOCKS5 is the second version of the socks protocol family. It uses the HTTP SOCKS protocol to transfer data. The most important parts of SOCKS5 are its encryption and authentication; they help you establish an encrypted connection to a remote network. SOCKS5 always performs a handshake before starting to transfer data. This handshake includes a negotiate message where the server tells the client about the parameters for the connection. This handshake is done manually in a SOCKS4 proxy but is done automatically in a SOCKS5 proxy.
In SOCKS5, the server and the client exchange a list of parameters for the connection. The first parameter is a version number of SOCKS5. Next, the server tells the client about the type of authentication it uses. In today's article, we will focus on the authentication method Transmission Control Protocol/IP (TCP/IP) with authentication. You will learn all about the other authentication methods in this read.
SOCKS5 specifies a variety of methods for authentication. Let's first see the common ways SOCKS5 proxies authenticate a connection.
SOCKS authentication methods. SOCKS authentication methods are the ways used by the server to authenticate the client. There are 2 types of authentication methods in SOCKS5. The first type is called username/password authentication.
SOCKS5 username/password authentication. In this authentication method, the client requests the server for a username and a password. These 2 items are sent to the client as plain text. The server needs to know the username and the password before allowing the connection to be established.
How can I get started with a SOCKS5 proxy?
The following instructions are for Linux users only. The commands used should work on all popular UNIX operating systems, including Mac OS X. The instructions for users on other operating systems, including Windows, can be found here.
If you are new to SOCKS, the most efficient way to get started is to browse the SOCKS proxy configuration documentation and figure out how the proxy server works. This will take several minutes of study, but once you understand how SOCKS works, you will be able to get things set up quickly. If you need an overview, we've written an article called the How SOCKS Works.
What is a SOCKS server? A SOCKS server (or SOCKS5 proxy) is a program that you run on your computer, enabling you to connect to the internet through your existing network. SOCKS servers are widely available and can be found on the internet for many operating systems, including Linux, Windows, and Mac OS X. If you have access to a firewall that supports SOCKS (most do), you should be able to configure your firewall to allow inbound connections on port 1080 (SOCKS) so that your network will appear to be a gateway for internet traffic.
What is a SOCKS client? The SOCKS protocol is used by applications on the internet to discover and connect to SOCKS servers. SOCKS servers are configured to forward connections to SOCKS clients on your computer. A SOCKS client is a program (typically your web browser) that uses the SOCKS protocol to connect to the internet. If you have a SOCKS server configured to forward connections to a SOCKS client, then the SOCKS client will appear to the internet as if it is a proxy server itself. This means that your web browser can connect directly to a SOCKS server, or through the SOCKS server, to the internet.
Why use SOCKS? It is often easier to use a SOCKS proxy than a VPN when connecting to a private network. This is because most SOCKS servers are easier to configure than VPN servers. SOCKS servers do not need to have special network cards or special software to be installed in order to work.
How to configure a SOCKS client?