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SockS5 proxy configuration and usage tips under Linux

Anna . 2024-09-24

Definition of SockS5 proxy

SockS5 is a network protocol used to securely transmit data through a proxy server on the network. It supports authentication, UDP traffic transmission and IPv6, and is compatible with a variety of applications. It is one of the commonly used proxy protocols.

Advantages of SockS5 proxy

Compared with traditional HTTP proxy, SockS5 proxy has higher flexibility and security. It can handle more types of data traffic, including HTTP, HTTPS and UDP, and supports authentication mechanisms, providing a more secure way of data transmission.

Configure SockS5 proxy under Linux system

Install and configure SockS5 server

In Linux system, common SockS5 server software includes Shadowsocks and Dante. Users can choose the appropriate software for installation and configuration according to their needs. The following is a configuration example based on Shadowsocks:

Install Shadowsocks

Install Shadowsocks using the following commands in the terminal:

sudo apt update

sudo apt install shadowsocks-libev

Configure Shadowsocks

Edit the Shadowsocks configuration file /etc/shadowsocks/config.json, and configure the proxy server address, port, password and other parameters:

{

"server":"your_server_ip",

"server_port":8388,

"password":"your_password",

"method":"aes-256-gcm"}

Save and exit the configuration file.

Start Shadowsocks service:

sudo systemctl start shadowsocks-libev

Optional: Set Shadowsocks to start automatically at boot:

sudo systemctl enable shadowsocks-libev

Verify and test SockS5 proxy

After configuration, you can use curl or other command line tools to test whether the connection of SockS5 proxy is normal. For example, use curl to test:

curl --socks5-hostname 127.0.0.1:1080 http://example.com

Make sure that the proxy can forward requests and get responses normally.

Advanced usage tips for SockS5 proxy

Set global proxy

In order to facilitate the use of SockS5 proxy by the entire system or specific applications, you can achieve global proxy effect by setting environment variables or system proxy configuration. For example, add the following to the ~/.bashrc file:

export http_proxy="socks5://127.0.0.1:1080"export https_proxy="socks5://127.0.0.1:1080"export ftp_proxy="socks5://127.0.0.1:1080"export no_proxy="localhost,127.0.0.1"

Using proxy chains and multiple proxies

Sometimes it is necessary to route data traffic through multiple proxy servers or proxy links to improve security or bypass network restrictions. In the configuration of SockS5 proxy, you can set multiple proxy server addresses and ports to implement cascade proxy of data traffic.

Optimizing proxy performance and security

In order to optimize the performance and security of the proxy server, you can configure relevant parameters such as timeout, number of concurrent connections, etc. In addition, regularly updating the proxy server software and upgrading system patches are also important measures to keep the proxy service efficient and secure.


Conclusion

Through the introduction of this article, readers can understand the basic steps and advanced techniques for configuring and using SockS5 proxy in Linux system. As a secure and flexible proxy protocol, SockS5 proxy can not only protect user privacy and data security, but also effectively bypass network restrictions and improve network access efficiency.

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