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It is an proxy frequently referred to as a proxy server is software that sits as a middleman between the user and server on the web. Without a proxy, a user could send a request for a resource directly to a server, and it would then serve direct to users. This is not difficult to understand and implement the use of proxy servers can offer advantages like improved performance and privacy, security and many more. As a further layer of pass-through, proxies are a way to secure the internet between clients and servers.

The general entire set of server hardware as well as the software used to install proxy is commonly referred to as proxy servers. This article will focus on proxies commonly referred to as software and in relation to web servers. This article will give an explanation of the two major types of proxies, which include forward and reverse. forward proxy and reverse proxy. reverse proxy. Each has a distinct use case, often confused due to the similar name convention.

This article will provide you with an overview of types of proxies, their subtypes, and how they work in normal configurations. In the article you'll learn how to recognize the situations in which the use of proxies is advantageous, and choose the best option between forward and reverse proxy in each circumstance.

Understanding Forward Proxies

In the same way forward proxy also called an open proxy is a representative of a client who wants to send requests over online to the originating server. In this situation, all attempts to send requests made by the client will be transferred to the forward proxy. In this situation the forward proxy acting in the place in the place of the customer will examine the request. It is the first thing to determine if the client is authorized to accept requests from this specific forward proxy. The client will either decline any request or forward it to its origin server. The client is not able to have an internet connection directly It can only access what forward proxy allows it access to.

The most popular reason for using forward proxies is to improve privacy or security online. Forward proxy makes use of the internet in lieu of a client and in that process it may use a different IP address that is different from the client's initial IP address.

Depending on how it's configured, and based on the way it is configured forward proxy could provide many features as well as the ability to:

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  Beware of ad-tracker.
  
  
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  Circumvent surveillance.
  
  
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  Find limitations based on the geographic location.
  
  

Forward proxies are also employed in systems that provide centralized security and access based on permissions, for example, in the workplace. If all internet traffic flows via an open forward proxy administrators could allow access to only certain users who are filtered through an ordinary firewall. Instead of putting firewalls installed for the client layer which could include several devices that have different settings and users and environments A firewall could be added to this forward proxy layer.

It is important to note that forward proxy servers must be manually set up for use before they can be utilized, whereas reverse proxy servers are able to be not recognized by clients. Based on the fact that your IP address user is transferred to the origin server through the forward proxy privacy and anonymity can be granted or made clear.

There are many options to consider to find forward proxy options

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  Apache The Apache is a popular open-source web server that offers forward proxy functionality.
  
  
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  Nginx: Another well-known open-source webserver that has forward proxy capabilities.
  
  
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  Squid is a free forward proxy based on the HTTP protocol. Squid doesn't include the full web server. Check out our article on the best way to create Squid proxy to permit private connections within Ubuntu 20.04.
  
  
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  Dante Forward proxy that makes use of the SOCKS protocol instead of HTTP, making it better to handle situations like peer-to-peer communication. You might also want to look into how to configure a Dante proxy for private connections on Ubuntu 20.04
  
  

Understanding Reverse Proxies

Reverse proxy serves as an agent for a web server, handling the incoming requests of customers on behalf. The web server may comprise a single server, or a number of servers. It could also serve for application servers like Gunicorn. In both cases, a request could originate from a user on the web in general. Normally, this request will be sent directly to the website server with the resources that the user is in need of. In contrast, a reverse proxy works as an intermediary in order to protect your web server from interactions with the internet's public.

From a customer's point of view, the experience of using reverse proxy is the same as communicating directly with your webserver. It is functionally the same and the user is unable to discern the difference. Client requests a resource and then receives it, without any additional configuration or input from the end user.

Reverse proxies provide functions like:

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  Security centralized for web servers.
  
  
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  The sending of traffic according to rules you can make.
  
  
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  New feature added to caching.
  
  

While central security is a benefit of both reverse and forward proxy systems, reverse proxy provides this service only to the server layer and not to the layer that clients use. instead of maintaining firewalls on the web server layer that could include multiple servers with various configurations, the majority of firewall security may be centered in the reverse proxy layer. Additionally, getting rid of the burden of interfacing with firewalls as well as dealing with requests from clients far from web servers allows the firewall to concentrate on addressing the needs of their clients.

In the case of multiple servers behind a reverse proxy the reverse proxy is also responsible to control which requests are placed on which server. There may be several web servers providing the exact same service, but serving various kinds of resources, or a mix of both. They can use the HTTP protocol like a traditional web server, but can also be outfitted with protocols for application servers like FastCGI. A reverse proxy to send clients to specific servers based on the type of resource they are searching for, or follow specific rules regarding traffic load.

Reverse proxies benefit from their location on top of web servers, by providing the ability to cache information. Massive static content can be set up using caching policies to stop the web server from being hit with every request. Some solutions providing the option to serve static content directly without touching the web server at all. Additionally reverse proxy has the capability of compressing these files.

The well-known Nginx webserver is an effective reverse proxy service. It is real that Apache web server also comes with an reverse proxy feature, however it's an additional attribute of Apache however Nginx was originally designed for and focuses specifically on the reverse proxy feature.

Differentiating Forward Proxy from Reverse Proxy Use. Differentiating Forward and Reverse Proxy Use

Since "forward" along with "reverse" can be interpreted as directionality, and can lead to misleading comparisons with "incoming" and "outgoing" traffic. These labels are confusing because both types of proxies can handle requests and also respond. Instead, a better way to differentiate between reverse and forward proxy is to study the requirements of the app that you're creating.

Reverse proxy is an important aspect to consider when developing a solution that allows web-based applications on the internet. They function as servers when you are connected to the internet.

A forward proxy is beneficial when it is placed in front of people for personal use, or in a corporate setting. They represent your clients when you use the internet.

The use case-based differentiation instead of focusing solely on similar naming conventions can prevent confusion.

Conclusion

The article explained what a proxy is as well as the two types of them, namely the both reverse and forward proxy. Application scenarios that can be used in practical situations and a review of the most useful features were used to distinguish between forward and reverse proxy. If you're looking to know more about the advantages of proxies, you should read our guide on how to configure Nginx as an reverse proxy and internet server in Apache using the Ubuntu 20.04 server.

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