What is proxy server and its types? Why do Hackers use proxy servers?

Hello learners, Today i m writing this post for the appropriate knowledge of proxy and its types, and why mostly hackers use proxy.

So read this post, if you like it, then share this article to friends and family. If you have any doubt so comment below.

PROXY:-

According to Wikipedia, "In computer networking, a proxy server is a server application that acts as an intermediary between a client requesting a resource and the server providing that resource"

A proxy server acts as a gateway between you and the internet. It's an intermediary server separating end users from the websites they browse. Proxy servers provide varying levels of functionality, security, and privacy depending on your use case, needs, or company policy.

"The main purpose of proxy is to change IP address."

Types of Proxy servers :-

Proxy servers have few types :-

1. FTP proxies are used to load data to an FTP server
2. CGI proxy (anonymizer) helps to open any website directly in your browser. No additional configuration is required. Most often, such proxy is presented as a website where you can enter the address of the site you want to visit
3. SMTP, POP3 and IMAP proxies are used to send and receive e-mail
4. HTTP and HTTPS proxies designed for web browsing
5. Socks proxy sends all the data to the destination server as a client, therefore considered the most anonymous protocol.

HTTP, HTTPS and Socks proxies are used more often, so consider them in detail.

HTTP Proxy

HTTP proxy is the most wide-spread type of proxy. The main purpose is the organization of the work of browsers and other programs that use the TCP protocol. Standard ports 80, 8080, 3128.

HTTPS Proxy

HTTPS proxy in fact it is the HTTP-proxy, the letter "S" in this case means "secure" with support of SSL connection. These proxies are used when you want to send sensitive information (eg usernames / passwords, plastic card numbers). Standard ports 80, 8080, 3128.

SOCKS Proxy

Today Socks proxy is the most advanced data transfer protocol. Sometimes mistakenly called Socs, Sox, Soks. This protocol is designed by Dave Koblas.

Socks protocol developed for programs that do not support the use of proxy directly. Standard ports 1080, 1081.

This protocol has gone through many changes and now uses two protocol versions:

• Socks 4 supports only TCP connection
• Socks 5 supports TCP, UDP, authorization by login and password, and remote DNS-query

Socks is not engaged in moderation HTTP-header. Socks-server will transmit information through itself in its purest form. Therefore, all Socks servers are anonymous.

Socks proxy does not send information about your IP address. The website will not be able to determine the use of proxies. The connection with the website will be totally transparent, as if you were working directly with them. This web site will see the IP address of the proxy and not your real IP address.

Why do Hackers use proxy servers?

Explanation 1:- 

A proxy server reduces the chance of a breach. Because proxy servers can face the internet and relay requests from computers outside the network, they act as a buffer. While hackers may have access to your proxy, they'll have trouble reaching the server actually running the web software where your data is stored.

Explanation 2

To hide malicious activity on the network. 

Proxy servers exist to act as an intermediary between the hacker and the target and servces to keep the hacker anonymous tot he network.