# What is Proxy

By [Untitled](https://paragraph.com/@0xfe6b3f35c7a31f3d0147e25e7acd60b59d797fd6) · 2023-02-13

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What is a Proxy A proxy is a network technology that creates a virtual connection between a client and a target network. The client accesses resources on other networks through a proxy server, which intercepts the client's request and forwards it to the target network. After receiving the response, the proxy server returns it to the client. Using a proxy has several advantages, including improved access speed and security. The proxy server can cache frequently visited web pages, reducing the time needed to access them, and can also review and filter client requests to prevent access to unsafe or illegal content. There are several standard proxy software programs, such as Squid, TinyProxy, and Socks5, that can be installed on a server to provide proxy services. Users can access the network through a proxy by specifying the IP address and port number of the proxy server in their browser.

Forward and Reverse Proxy A forward proxy is when a client accesses other network resources through the proxy server, and the target network only sees the proxy server's access, providing the client with anonymity. On the other hand, a reverse proxy is when the proxy server initiates a request to the target server on behalf of the client, allowing the client to also access resources anonymously. Reverse proxies are often used for scenarios such as load balancing and caching.

Characteristics of Proxy Proxy technology offers several benefits, including anonymity, high availability, caching, transit services, and management and control capabilities. Anonymity refers to hiding the source address of the client and the target server's absolute address by establishing a virtual connection between them. This protects the client's security and prevents their address from being leaked or attacked. High availability means the proxy server can distribute traffic to multiple servers, improving the system's reliability. This is often used for website load balancing and server clusters. The caching function of a proxy server allows it to cache static resources from websites and provide them directly to the client on subsequent visits, reducing network requests and response times, and improving website access speed. In some scenarios, such as game acceleration or scientific internet access, a proxy server can be deployed as a transit service to provide access to resources that would otherwise be unavailable. In this case, authentication is necessary to control the user's access, as their IP address is floating and their identity cannot be determined without authentication. A qualified proxy server should also provide access logs and management and control services, such as multiple authentication methods, content control, and control capabilities. For example, Squid provides basic authentication and control functions, while Burp Suite's intermediary control provides more control capabilities. The proxy server should also keep logs to track access records and resolve any issues. Finally, it is recommended to choose a proxy software based on one's own needs and not blindly follow trends. Some popular options include [MaxProxy](https://www.maxproxy.com/), NetNut, and GeoSurf, which are known for being stable and easy to use.

![](https://storage.googleapis.com/papyrus_images/81b4df7cc950a617a795a1478189a98ec54814ce35776561565f2b760f832bf1.png)

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*Originally published on [Untitled](https://paragraph.com/@0xfe6b3f35c7a31f3d0147e25e7acd60b59d797fd6/what-is-proxy)*