Proxy Server

Proxy Meaning Explained: What Is a Proxy Server?

Author
Janis von Bleichert
Last update

Online, anonymity is a scarce commodity. One of the main reasons for this is that your individual IP address offers insight into your identity, location, and Internet Service Provider (ISP). Whenever you visit a website, it receives your IP address, unless you use an intermediary, like a proxy server.

Proxy servers are web servers that operate between your device and the Internet. They forward your requests to the websites you want to visit (and vice versa). Accordingly, they ensure that there's never a direct link between you and those sites since they don't receive your IP address or information about your ISP or location.

What Are Proxy Servers Good For?

Proxy servers can have a number of uses, both for individuals, as well as organizations or businesses. These include:

Anonymous surfing
Since proxy servers conceal your IP address, others can't gain insight into your identity. Using them provides a certain degree of anonymity.

Circumvent geo-restrictions
By changing the proxy server you connect to, it becomes possible to alter your virtual location. This makes it possible to fool platforms such as Netflix or the BBC and bypass their geoblocking of content. Through this method, you'll also be able to overcome digital censorship, such as the Great Firewall of China.

Filter content
Proxy servers are especially popular on corporate or organizational networks for blocking certain kinds of queries. Should you not want users to be able to access specific websites or engage in filesharing, you can prevent both with a proxy server.

Enhance speed
With proxy servers, you can locally save copies of transferred data, meaning that websites you visit frequently will load faster. Instead of transferring data every time you access a website, it can be temporarily stored in your cache, in what is known as caching.

Burden-sharing
Websites can also rely on proxy servers as a sort of digital doorman, capable of reallocating traffic in order to minimize resource usage and maintain stability.

As can be seen from the above, proxy servers definitely have a number of practical uses. So how do they work?

How Does a Proxy Server Work?

Whenever you visit a website - through your computer's browser, let's say - your device sends a request to the target server of that website. Among other things, this request includes your IP address. The target server uses this to see where the request originated from and where the reply needs to be sent.

Without a proxy server, your Internet requests are sent directly to the website you intend to visit.

Should you use a proxy server, it acts as a middleman between you and the target server. Once you've input a URL and sent your request, it winds up at the proxy server. From here, it's forwarded to the target server of the website you want to visit, albeit with the proxy server's IP address, rather than your own, keeping you anonymous.

The target server's reply is sent back to the proxy server (and then to you), preventing any direct contact between you and the network.

Proxy servers operate in between you and the Internet, hiding your IP address.

All proxy servers operate on this general principle, however, different types of proxies have varied uses and applications.

What Types of Proxy Servers Are There?

Not all proxies are created equal: Proxy servers can be grouped into numerous categories, based on factors such as how much anonymity they provide or the connection's properties. Since there is considerable overlap between these, it's common to distinguish between three main types of proxy servers:

  • Forward and reverse proxy servers:
    Forward proxies are classic proxy servers that receive requests from the client (such as your browser) and direct them on to the target server. Reverse proxies operate in the opposite fashion, receiving requests from a target server. This is useful when a site operator wants to check incoming requests for security reasons or to allocate them to different servers (burden-sharing).
  • Transparent and anonymous proxy servers:
    Anonymous proxy servers hide the client's IP address, allowing users to go around content restrictions or firewalls. A further distinction exists between "regular" anonymous servers that identify themselves as proxy servers, and "high anonymity" proxy servers, which cannot be recognized as such. Transparent proxy servers are the opposite, disguising neither themselves nor the IP address of their clients. These are frequently used by businesses or schools to aid in content filtering.
  • HTTP(S) and SOCKS proxy servers: HTTP proxy servers are specifically configured to forward HTTP requests, limiting their applicability to web content. HTTPS proxies encrypt traffic by adding the HTTPS protocol. SOCKS proxy servers are more flexible and forward all kinds of traffic, meaning that they can also be used for torrents or email clients.

How to Use a Proxy Server?

If you'd like to use a proxy server, a number of different methods exist which vary in terms of their ease, flexibility, and security.

1.

Web Proxy

A web proxy is the easiest way to use a proxy server. You won't have to configure anything but simply navigate to the service's website. Once there, input the URL you'd like to visit, select a server location (if offered), and eventually, modify the cookie or script options. After that, the web proxy will forward your request to the proxy server you've selected and direct you to the website.

ProxySite, HideMyAss, and Hide.me all offer good web proxies.

Using web proxies, you can establish a proxy connection with just a few clicks.

The advantage of using a web proxy is its simplicity: You don't have to configure anything and can take advantage of them so long as you have a browser and an Internet connection. Of course, they also suffer from some disadvantages: To start, they usually aren't very fast or reliable, making them poorly suited for video streaming. Compounding this, most of the time they only support web traffic.

In our web proxy article, we've included everything you need to know about these browser-based tools.

2.

Web Proxy Browser Extension

In case navigating to the web proxy's website each time you want to establish a proxy connection doesn't sound appealing to you, a browser extension might be worth considering. For example, HideMyAss offers just such a tool at no cost. At its core, this is a basic web proxy solution that differs from the above method only in negating the need to visit the service's website.

With a proxy browser extension, you won't need to visit the service's website each time you want to establish a proxy connection.

Should you be after greater flexibility and enhanced performance, you can also manually configure a proxy in your browser. Our guides for Google Chrome (Windows) and Mozilla Firefox walk you through just how to do this.

Manual Configuration on Your Operating System

If you'd like to use a proxy server for your entire Internet connection, you'll need to set this up at the operating system level. In Windows, two basic options exist for this when navigating to Settings > Network and internet > Proxy:

You can run an automatic setup script from your university or organization, or manually configure the proxy server. For this, you'll need the IP address of a proxy server, which you can take from our list of free proxies, or rent one for a fee. Free servers are often slow and/or unreliable.

One advantage of configuring a proxy on your operating system is that you'll be able to use it for all of your Internet traffic.

We've create a step-by-step guide for how to setup a proxy server on your operating system.

What Are the Disadvantages of a Proxy Server?

Proxy servers are useful, however, in comparison to other solutions, they do have a few disadvantages:

Speed and reliability
Free proxy servers in particular are often slow and unreliable. For that reason, you might have to frequently change the server you've connected to.

No encryption
Proxy servers provide a certain degree of anonymity, however, they usually don't encrypt your connection. If you'd like to conceal and protect your digital identity, there are better methods for doing so.

Security risks (operator)
Most of the time those running proxy servers are unknown, especially when the services are free. Accordingly, there is some danger of an unscrupulous individual or group monitoring your activities or manipulating HTML.

Limited uses
Depending on the type of proxy server, the resulting connection can be restricted to certain kinds of traffic, such as HTTP.

User-friendliness
Free web proxies are easy to use, which is great, however, you'll only tap into the true potential offered by proxy servers when you can manually configure and/or pay for them. This shouldn't pose too much of a hurdle for beginners but is more complicated than other solutions.

Alternatives to Proxy Servers

The readiest alternative to proxy servers is a VPN. These virtual private networks also serve as intermediaries between you and the Internet, concealing your identity and making it possible to change your virtual location with the click of a mouse. However, despite these similarities, there are a number of key differences: VPNs offer far more security since they don't only conceal your IP address, but also your complete Internet traffic.

Below, we've summarized what the most essential differences between a VPN and proxy server are:

Proxy serverVPN

Encryption

None (generally)

Entire connection

Costs

Most often free (with limitations)

Most often premium, but also free (with limitations)

Usage

Manual setup needed (except web proxies and browser extensions)

User-friendly apps

Speed

Theoretically faster, but depends entirely on the proxy server

Loss of speed owing to encryption, however, connections are more stable

Reliability

Varies from proxy server to proxy server

Generally high

Owing to their encryption standards, the stability and reliability of their connections, and their ease of use, VPNs offer an attractive alternative to proxy servers. You should keep in mind that good VPNs without speed or bandwidth limits are typically premium (there are some exceptions, however).

There are plenty of VPNs to choose from. In our EXPERTE.com VPN comparison, we assessed 22 of the leading solutions, crowning a winner:

EXPERTE.com's Top VPN: NordVPN

Best Overall 2022
NordVPN Test
NordVPN
(694,416)
5400+ servers, 60 countries
Excellent performance
No logs
6 devices simultaneously
Inexpensive 2-year package
NordVPN combines speed, user-friendliness and functionality into a coherent overall package that is also fairly affordable.
Data volume
unlimited
Devices
6
Protocols
5
Contract Period
1 - 24 months
NordVPN 2-year plan
$2.99
monthly price
Visit Website »
30 days money-back guarantee
Review
4.7 / 5
excellent

NordVPN combines user-friendliness with excellent speeds (as determined by our VPN speed test) and a sizable server network. The Panama-based provider's security standards are high as well, promising not to save logs and allowing its claims to be regularly checked by third-party audits.

EXPERTE.com's winner, NordVPN, excelled thanks to its speed, features, and security.

All important VPN features (including split tunneling) are offered. You'll also be able to take advantage of "specialty servers", such as those optimized for P2P platforms or Onion Over VPN, which offers enhanced anonymity by connecting to Tor network.

Since NordVPN is priced competitively, we have no qualms voicing our opinion that it offers the best VPN package on the market.

Review
4.7 / 5
04/2021
excellent
Visit Website
Performance
5.0 / 5
Customer Support
4.7 / 5
Installation and Features
4.7 / 5
Security and Privacy
4.7 / 5
Server Network
4.3 / 5

Conclusion

Proxy servers stand between a client (such as your browser) and the Internet. Since they conceal your IP address and location, they're great for circumventing geo-restrictions. At the same time, they have a number of other features that might interest individuals and organizations.

While free, don't count on them to encrypt your Internet connection, or be particularly reliable. For these reasons, VPNs are a popular, albeit premium alternative: They work at the operating system level, encrypt your entire Internet traffic, and are stable.

If you'd like to manually set up a proxy server, you can select a free proxy IP from our regularly updated EXPERTE.com list. On the other hand, if you're interested in exploring VPNs, a good place to start would be our exhaustive comparison of 22 of the leading providers.

FAQs

What is a proxy server?
A proxy server serves as an intermediary between a client and a target website. It receives requests from a browser (client) and forwards them to a web server (target), eliminating any direct contact between the client and the target. In this way, information such as the sending device's IP address remains unknown to the web server.

Does it make sense to use a proxy server?
Proxy servers have a number of uses, both for individuals as well as for organizations or businesses. They come in handy for circumventing geo-restrictions, such as with streaming platforms like Netflix. Businesses and institutions can use them to filter content or make their websites more stable by burden-sharing.

How can I setup a proxy server?
In order to take advantage of all of the benefits offered by a proxy server, you'll need to configure it at the operating system level. On Windows, head to Settings > Network and internet > Proxy. We've created a step-by-step guide, that shows just how to do this. Alternatively, you can use web proxies to create a proxy connection directly in your browser for specific websites.

Author: Janis von Bleichert
Janis von Bleichert studied business informatics at the TU Munich and computer science at the TU Berlin, Germany. He has been self-employed since 2006 and is the founder of EXPERTE.com. He writes about hosting, software and IT security.
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