What is Proxy Server?

5 min readAug 5, 2023
Fig-01 Servers

Proxy server refers to a server that acts as an intermediary between the request made by clients, and a particular server for some services or requests for some resources. There are different types of proxy servers available that are put into use according to the purpose of a request made by the clients to the servers. The basic purpose of Proxy servers is to protect the direct connection of Internet clients and internet resources. The proxy server also prevents the identification of the client’s IP address when the client makes any request is made to any other servers.

  • Internet Client and Internet resources: For internet clients, Proxy servers also act as a shield for an internal network against the request coming from a client to access the data stored on the server. It makes the original IP address of the node remains hidden while accessing data from that server.
Fig-2 Shield Server for host
  • Protects true host identity: In this method, outgoing traffic appears to come from the proxy server rather than internet navigation. It must be configured to the specific application such as HTTPs or FTP. For example, organizations can use a proxy to observe the traffic of its employees to get the work efficiently done. It can also be used to keep a check on any kind of highly confidential data leakage. Some can also use it to increase their websites rank.

Need Of Private Proxy:

  1. Defeat Hackers: To protect organizations data from malicious use, passwords are used and different architects are setup, but still, there may be a possibility that this information can be hacked in case the IP address is accessible easily. To prevent such kind of misuse of Data Proxy servers are set up to prevent tracking of original IP addresses instead data is shown to come from a different IP address.
  2. Filtering of Content: By caching the content of the websites, Proxy helps in fast access to the data that has been accessed very often.
  3. Privacy Benefits: Proxy servers are used to browse the internet more privately. It will change the IP address and identify the information the web request contains.
  4. Security: Proxy server is used to encrypt your web requests to keep prying eyes from reading your transactions as it provides top-level security.
  5. Examine Packet headers and Payloads: Payloads and packet headers of the requests made by the user nodes in the internal server to access to social websites can be easily tracked and restricted.

Types Of Proxy Server

  1. Web Proxy Server: Web Proxy forwards the HTTP requests, only URL is passed instead of a path. The request is sent to particular the proxy server responds. Examples, Apache, HAP Proxy.
  2. Anonymous Proxy Server: This type of proxy server does not make an original IP address instead these servers are detectable still provides rational anonymity to the client device.
  3. Highly Anonymity Proxy: This proxy server does not allow the original IP address and it as a proxy server to be detected.
  4. Tor Onion Proxy: This server aims at online anonymity to the user’s personal information. It is used to route the traffic through various networks present worldwide to arise difficulty in tracking the users’ address and prevent the attack of any anonymous activities. It makes it difficult for any person who is trying to track the original address. In this type of routing, the information is encrypted in a multi-folds layer. At the destination, each layer is decrypted one by one to prevent the information to scramble and receive original content. This software is open-source and free of cost to use.
Fig-3 Tor Proxy
  1. 12P Anonymous Proxy: It uses encryption to hide all the communications at various levels. This encrypted data is then relayed through various network routers present at different locations and thus I2P is a fully distributed proxy. This software is free of cost and open source to use, It also resists the censorship.
  1. ectDNS Proxy: DNS proxy take requests in the form of DNS queries and forward them to the Domain server where it can also be cached, moreover flow of request can also be redirected.

How Does The Proxy Server Operates?

Every computer has its unique IP address which it uses to communicate with another node. Similarly, the proxy server has its IP address that your computer knows. When a web request is sent, your request goes to the proxy server first. The Proxy sends a request on your behalf to the internet and then collect the data and make it available to you. A proxy can change your IP address So, the webserver will be unable to fetch your location in the world. It protects data from getting hacked too. Moreover, it can block some web pages also.

Fig-5 Proxy working

Disadvantages of Proxy Server

  1. Proxy Server Risks: Free installation does not invest much in backend hardware or encryption. It will result in performance issues and potential data security issues. If you install a “free” proxy server, treat very carefully, some of those might steal your credit card numbers.
  2. Browsing history log: The proxy server stores your original IP address and web request information is possibly unencrypted form and saved locally. Always check if your proxy server logs and saves that data — and what kind of retention or law enforcement cooperation policies they follow while saving data.
  3. No encryption: No encryption means you are sending your requests as plain text. Anyone will be able to pull usernames and passwords and account information easily. Keep a check that proxy provides full encryption whenever you use it.

in next article i will show you how to add Proxy Server practical in kali how to stay secured on kali because as a attacker we must use the kali system so that we must be secured our kali system to anonymous our identify on internet

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