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A proxy, also known as a proxy is also referred to for its role as a proxy. It is software that acts as an intermediary between a client and server on the internet. Without the proxy, a customer would be able to send a request to any resource directly to the server and servers would serve direct to users who requested the resource. Although this method is easy to comprehend and use the addition of proxy servers could provide advantages including increased speed, privacy and security, etc. As an additional layer of security, proxies act as a gatekeeper for the internet between servers and clients.

The consensus is that the system of servers that are equipped with proxy software is commonly known as proxy servers. But, this article will focus on proxies traditionally defined as software, specifically with respect with web server. We will present a summary of the two main kinds of proxy services: a forward proxy and reverse proxy. reverse proxy. Each type has a different use, and can be confusing due to the identical namestamp.

This article will provide you with an understanding of different types of proxy and subtypes, and what they can do for the most common setups. By reading this article you'll recognize the situations where you may benefit from a proxy and make the right choice between reverse proxy and forward proxy depending on the scenario.

Understanding Forward Proxies

Forward proxy, also known as an open proxy acts as an agent for the user who wishes to transmit a request through the internet to a source server. In this case every request sent by the client will be directed via the forward proxy. A forward proxy that is in position of the customer will look into the request. It will first determine whether the client is authorized to accept requests through this specific forward proxy. Then, it will either refuse any request, or redirect it to the source server. The client is not capable of having direct access to the internet. it is only capable of accessing the information that forward proxy grants its access.

The most popular reasons for forward proxy is to provide greater security or privacy on the internet. A forward proxy accesses the internet instead of a specific client and can use another IP address, in contrast to the IP address of the user.

Based on the way it's configured, based on the way it is configured forward proxy could provide a range of features and allow you to:

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  Do not click on ads that track you.
  
  
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  Circumvent surveillance.
  
  
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  Determine restrictions based on location.
  
  

Forward proxies are also employed in systems that provide central security as well as permission-based access to the internet, for instance in workplaces. In the event that all internet traffic is routed through a common forward proxy layer an administrator is able to restrict access to only certain clients to the internet, which is controlled by a standard firewall. Instead of putting firewalls in place for the client layer, which could comprise a variety of machines with various settings and types of users, the firewall may be placed at the proxy layer that is in front.

Remember that forward proxies must be set up manually for use, while reverse proxy servers could be disregarded in the eyes of the user. Depending on the kind of IP address a client is sent to the server that originated it through the forward proxy, privacy and security may be granted or made clear.

There are many possibilities to consider in determining forward proxy:

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  Apache is an well-known open-source web server that offers forward proxy capabilities.
  
  
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  Nginx is another well-known open-source webserver that includes forward proxy functionality.
  
  
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  Squid: A free and open source forward proxy that makes use of an HTTP protocol. It does not contain the whole web server. We recommend you read our article about the best method to set up Squid proxy to permit private connections on Ubuntu 20.04.
  
  
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  Dante is an forward proxy that utilizes the SOCKS protocol instead of HTTP which makes it more suitable for scenarios such as peer-to-peer connections. It is also possible to learn how to setup the Dante proxy for private connections in Ubuntu 20.04
  
  

Understanding Reverse Proxies

Reverse proxy acts as the web server that handles the requests of customers on behalf of the server. The server could function as a single server or a number of servers. In addition, it could contain an application server like Gunicorn. In any of these instances the request will be made through the internet at large. In the majority of cases the request will be sent directly to the server, along with the resources the client in need of. A reverse proxy serves as an intermediary and separates your website server from communicating with the internet's users.

From the point of the client's point of reverse proxy is not different from connecting to an internet server direct. It's basically the same, but clients aren't aware of the difference. The client makes a request for the resource, and it then gets it, with no additional configuration required by the client.

Reverse proxies provide various features, including:

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  A centralized layer of security that protects the server.
  
  
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  The direction of traffic that is using rules that you set up.
  
  
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  A new feature for caching is now available.
  
  

Although central security is a benefit of both forward and reverse proxy services, reverse proxy providers provide this feature only to only the server layer, not the client layer. Instead of focusing on the maintenance of firewalls at the server level which could include multiple servers and different configurations, the bulk of firewall security can be concentrated on the reverse proxy layer. Additionally, removing the burden of interacting with firewalls and interacting with requests from clients not connected to web servers permits them to concentrate solely on delivering the needs of their customers.

In the event of multiple servers hosting through a reverse proxy it also manages the routing of requests to the server that is hosting them. Multiple servers may be serving the same resource, serving different kinds of resources or a mix of the two. They may utilize the HTTP protocol to function as a normal web server, however they can additionally include protocols for application servers like FastCGI. You can create reverse proxy that routes clients to particular servers based on the request for source, and to adhere to specific rules regarding traffic volume.

Reverse proxies may also make use of their position before web servers, by providing the ability to cache. Large static assets can be set by caching rules to avoid reaching web servers every request. There are solutions offering an option to serve static content without needing to connect with the webserver in any way. Additionally, reverse proxy can help compress these assets.

The well-known Nginx web server has become a wildly popular reverse proxy option. It is true that the Apache web server has a reverse proxy capabilities as an added feature available to Apache but Nginx was originally designed to and is focused on reverse proxy functionality.

Differentiating Forward Proxy and Reverse Proxy Examples

Because "forward" as well as "reverse" are associated with a sense of directionality and misleading comparisons with "incoming" and "outgoing" traffic can be confusing since both kinds of proxies process requests and respond. A better approach to distinguish between reverse and forward proxy servers would be to look at the requirements of the application that you are building.

Reverse proxy is a vital aspect in the design of a method to run websites on the internet. They function as your servers when you interact with the Internet.

Forward proxy is useful in displaying customer information for your own use, or in a work environment. They are a way to display the information of your client every time you interact with them on the internet.

A distinction based upon use cases instead of focusing on naming conventions that are similar will make it easier to avoid confusion.

Conclusion

This article clarified the meaning of a proxy with two types of them being the reverse and forward proxy. Practical applications and an examination of the beneficial attributes were utilized to determine forward proxies as well as reverse proxies. If you're interested exploring the use in proxy server, follow our tutorial on how to set up Nginx as web server as well as reverse proxy within Apache using Ubuntu 20.04 Server. Ubuntu 20.04 Server.

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