What Is a Proxy Server?

This article will explore proxy servers and cover different types of proxy servers, along with a set of use cases for proxy servers to help you understand whether a proxy server is right for you.

What is Proxy server

Cyberattacks have drastically increased in 2024, and as a result, it’s important to understand ways of using the internet securely. One such approach is using proxy servers.

“Proxy servers are an underutilized tool for businesses of all sizes. They can help to protect sensitive data, improve performance, and comply with regulations ”— Satya Nadella, CEO of Microsoft
By adopting proxies, companies can secure their systems and users’ communications with the internet and ultimately protect themselves from cyberattacks (both big and small).


What is a Proxy Server?

Every device that is connected to the internet is assigned an IP address. These IP addresses play a vital role in directing incoming and outgoing data. They act as a destination for incoming data and mark outgoing data with a return address for other devices to authenticate.

Simply put, these IP Addresses act like the destination of data flowing through the internet.
Sometimes, you don’t want everyone to see the “destination” the data goes to but rather relay it through an intermediary that then maps the response back to the rightful destination. Well, that’s exactly what a proxy server does. Consider the diagram below:

As shown in the figure above, a proxy server is an intermediary system or a router that is placed between the end-user and the internet. It helps control all the connections that originate from the client to the internet, and it even filters requests that come from the internet through the client.

So, in a nutshell, you can configure a proxy server to act as a firewall or a web filter to protect devices from malware.

By doing so, these servers improve the overall security of a device as it restricts attackers from gaining access to a private network.


Types of Proxy Servers

There are several types of proxy servers, each catering to a particular task. Therefore, it’s important to understand the different types of proxies so that you end up using the right kind for your use case.

Transparent Proxy

A transparent proxy, as the name suggests, transparently handles data between the user and the internet without altering requests or hiding the user’s IP address.

It’s mainly used for content caching and network monitoring. This type of proxy is great for businesses that need to enforce policies or save bandwidth without needing users’ anonymity.

Anonymous Proxy

Anonymous proxies are designed to enhance privacy by hiding your IP address from the websites you visit.

They help avoid targeted ads and location-based restrictions by making your browsing anonymous. This proxy is popular among users who prioritize privacy and want to browse the internet without leaving traces of their IP addresses.

Distorting Proxy

Distorting proxies work by intentionally giving a false IP address to websites while keeping the user anonymous.

This is useful for accessing geo-restricted content or ads testing across different regions. Users appear to be coming from a location provided by the proxy, even though they might be somewhere entirely different.

Datacenter Proxy

Datacenter proxies are not associated with an internet service provider (ISP) but are provided by a secondary corporation and hosted on cloud servers.

They offer high anonymity and speed, making them suitable for web scraping, bulk data collection, and avoiding IP bans. However, because they come from large data centers, some websites might block them if they detect unusual activity.

Residential Proxy

Residential proxies assign users an IP address that has been issued by an ISP, making them appear as regular home users in a specific location.

This is particularly valuable for tasks that require high levels of trust, such as sneaker copping, ad verification, and accessing localized content without being flagged as suspicious.

Public Proxy

Public proxies are free to use, which makes them appealing but also risky.

They are often slower and less reliable due to high traffic volumes, and there’s a higher risk of malicious activities and data interception. They’re commonly used for simple tasks like basic web browsing when high security is not a priority.

SSL Proxy

SSL proxies encrypt the data between the user and the proxy server, offering an added layer of security by using SSL (Secure Socket Layer) protocol.

This type of proxy is beneficial for securing sensitive data transactions, like during online shopping or personal banking, and safeguarding against data breaches.

Rotating Proxy

Rotating proxies automatically changes the user’s IP address at each request or after a set time interval, providing high anonymity and reducing the chance of being blocked or detected.

This feature is especially useful for web scraping, automated data mining, and avoiding rate limits on APIs.

Forward Proxy

A forward proxy sits between a user’s network and the internet, managing outgoing requests.

It’s primarily used within corporate environments to filter internet usage, enforce security policies, and cache requested web resources. This helps in keeping internal networks secure and efficient.

Static Proxy

Static proxies combine the reliability of a residential proxy with the speed and anonymity of a datacenter proxy.

They provide a fixed IP address that is not shared with others, offering stability for long sessions. This is ideal for tasks that need a consistent identity, like managing social media accounts or online gaming.


Why Should You Use a Proxy Server?

Based on the previous section, you should probably have an idea on why you should consider using a proxy server. But, to expand on this, there are several reasons why you should consider using a proxy server.

Access to Restricted Content

Proxy servers are great tools if you need to access content that’s restricted in your area.

Whether it’s a news site blocked in your country or a Netflix series that’s only available overseas, a proxy can provide an IP address from a location where the content is accessible.

Improved Security

Using a proxy server can significantly enhance your internet security. By acting as a gateway between your devices and the internet, proxies help mask your IP address, making it harder for malicious actors to target your computer.

Additionally, a proxy is helpful if you’re hoping to filter out potentially unsafe data from transferring back to the client, thus reducing the risk of malware infections.

Web Scraping

If you’re collecting large amounts of data from the internet through web-scraping, you’ll definitely need to use proxies.

They help manage multiple requests to websites without getting blocked or banned. By using different IP addresses, a proxy server makes it appear as though the requests come from multiple users, thereby facilitating large-scale data collection more smoothly and efficiently.

Load Balancing

Proxy servers can effectively distribute incoming traffic across multiple servers through load balancing.

This not only maximizes the efficiency of network resources but also enhances the availability and reliability of web applications. Load balancing helps in managing large volumes of user requests without overloading any single server, which can prevent system crashes and ensure smoother, uninterrupted service delivery.


Benefits of a Proxy Server

It is important to note that using a proxy can be extremely beneficial. Understanding when to use a proxy is also crucial.

Enhanced Security

As discussed earlier, proxy servers provide an essential security barrier between your network and the broader internet by filtering incoming and outgoing traffic.

This added layer helps protect a system from potential hacking attempts and malware infections. Additionally, proxies can enforce advanced data security policies by acting as an intermediary, such as blocking access to malicious websites and safeguarding sensitive data from unauthorized access.

Privacy and Anonymity

Proxies enhance privacy and anonymity online by hiding the IP address of any device it’s managing. This makes it difficult for websites and third parties to track browsing activities and physical location.

This is useful as it helps maintain confidentiality when accessing sensitive or personal information over the internet.

Access Restricted Content

Proxies can bypass geo-restrictions and internet censorship by masking your real IP address with one fom a different geographic location.

This lets you access global content, such as regional news, video streams, and services that might be restricted in your area.

Improved Network Performance

Proxy servers can cache frequently requested web content, which speeds up loading times and reduces bandwidth usage on subsequent accesses.

Therefore, if you’re accessing a resource through a proxy, the proxy will first check if its cached, and if so, return from the cache without making an HTTP call. This significantly improves the overall network performance and user experience and can reduce delays in data retrieval.


Drawbacks of a Proxy Server

While a proxy server has many benefits, it can also negatively impact an organization. For example:

Speed Reduction

Even though proxies can serve content faster using caching, an uncached request has a longer round trip as the request must first go to a proxy and then to the internet, back to the proxy and to the client. This creates a longer round trip and adds more hops to each request, thus slowing down the overall request.

Cost

High-quality proxy services that provide advanced features like high anonymity and access to a wide range of geographic locations typically come at a cost.

These costs can add up, especially for businesses or individuals who require reliable and secure proxy services. The investment may be worth it for the added security and functionality, but it’s important to consider the budget implications and evaluate the cost-effectiveness based on your specific needs.

Reliability

If you’re using a proxy server that’s offered free of charge or is poorly maintained, chances are that you will run into reliability issues during usage. Sometimes, your proxy server could go down, thus making it impossible for your devices to communicate with the internet.


Use Cases of Proxy Servers

However, these drawbacks are worth taking the risk on, especially when considering the success that companies have had using proxies. In fact, here are some globally accepted use cases of proxy servers that you could look into:

Web Scraping and Data Mining

Proxy servers are crucial for web scraping and data mining because they can handle multiple simultaneous requests to websites without being blocked.

By using proxies, companies can gather vast amounts of data from various sources efficiently. This is crucial for market research, competitor analysis, and trend monitoring. Proxies help mask the scraping activity, making it appear as regular traffic, which is less likely to be flagged by web servers.

Enhanced Security

Proxy servers add an extra layer of security by acting as a gateway between users and the internet.

They help protect internal networks from external threats by filtering incoming and outgoing traffic, blocking malicious sites, and monitoring data for security threats. This is particularly important for businesses that handle sensitive information, as it helps prevent data breaches.

Anonymous Browsing

Proxies provide anonymity by hiding your IP address, allowing you to browse the internet without revealing your identity or location.

This is crucial for privacy-conscious individuals and organizations who want to protect their browsing habits and personal information from being tracked by advertisers, corporations, or even governments.


Conclusion

Proxy servers offer an intermediary solution that can control the traffic flow between the client and the internet to ensure maximum security for the client.

Therefore, it’s important to adopt proxies within organizations that are bound to face malware threats. But it’s vital that you select the correct proxy from the discussed types – based on your use case.