It is an proxy is often referred to as an application for a proxy server which acts as an intermediary between a server and a client via the internet. Without a proxy, the client can send a request a source directly through a server and the server would deliver the resource directly back to the client. This is not difficult to understand and implement, however, the addition of proxy servers could provide advantages such as improved performance, privacy, security and more. As an additional pass-through layer proxy servers act as a security layer to the internet between users and servers.

In general the mix of server hardware and proxy software is referred as proxy servers. The article we'll concentrate on proxies commonly thought to be software, and specifically, in relation to web servers. We will also discuss of the two principal kinds of proxies: the forward proxy and reverse proxy. reverse proxy. Each has its own specific usage scenario, but they are often confused because of a similar name convention.

This article will provide you with an understanding of what proxies as well as their subtypes are, and their use in common setups. In this article, you'll understand what scenarios that you can gain from a proxy and then select the most appropriate option between forward and reverse proxy in each situation.

Understanding Forward Proxies

The forward proxy sometimes known as the open proxy is an agent for the user trying to make a request through the internet to an original server. In this case all requests from the client are instead directed through an forward proxy. In this scenario, the forward proxy acting in place of the client will review the request. First, it will determine whether the client is permitted to submit requests via this specific forward proxy. It then decides whether to reject any request, or send it to the original server. The client has no direct connection to the internet, it is only able to access the information the forward proxy permits it to access.

The primary reason for people to utilize forward proxy is the need to increase privacy or security on the internet. A forward proxy uses an internet connection as a client, and in this process, it uses an alternate IP address for your client's IP address.

Depending on how they were set up in the past, forward proxy servers can provide a variety of functions that allow you to:

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  Avoid ad tracking.
  
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  Circumvent surveillance.
  
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  Find limitations based on your location.
  
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Forward proxies can also be used in systems for centralized security and access based on permissions for instance in workplaces. If all internet traffic is routed via an open forward proxy, the administrators can permit only a few clients access to the internet through a common firewall. Instead of establishing firewalls for the client layer, which could comprise a variety of machines with different settings or users can be installed at the proxy layer that forwards.

Be aware that forward proxy settings need to be manually setup prior to their use to use them and reverse proxy servers are not able to be noticed by the user. The kind of IP address the user's IP address, the server from which it originated through the forward proxy privacy and anonymity can be granted, or left in the dark.

There are a myriad of options to look into for forward proxies:

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  Apache The Apache is a popular open-source web server that provides forward proxy features.
  
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  Nginx: Another well-known open-source server for web hosting that has the ability to forward-proxy.
  
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  Squid: An open-source forward proxy that makes use of the HTTP protocol. It's not a complete web server system. You can refer to our guide on how to create a Squid proxy to connect privately using Ubuntu 20.04.
  
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  Dante forward proxy that runs using the SOCKS protocol rather than HTTP which makes it more suitable for situations such as peer-to-peer communication. You can also look into how to set up a Dante proxy that allows private connections to Ubuntu 20.04
  
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Understanding Reverse Proxies

A reverse proxy serves to act as an intermediary a web server and it takes responsibility for incoming requests from clients for the benefit of. This server could function as a single server, or as a series of servers. In addition, it could be an application-server like Gunicorn. In either of these scenarios the request will be made by a client via the internet as a whole. In most cases, the request will be directed directly to a webserver that has all the information the user is seeking. A reverse proxy functions as an intermediary that shields the webserver from direct interaction with the internet.

From the point of view of a client's view of the user, using reverse proxy is similar to interacting with the server by itself. It's functionally similar, but the user cannot tell the distinction. The client requests a resource, and then receives it without any additional configuration required on the part of the client.

Reverse proxy providers provide features like:

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  The web server is secured centrally.
  
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  Incoming traffic is directed based upon rules you can set up.
  
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  The caching feature is now available to users.
  
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Although centralized security is an advantage of both reverse and forward proxy systems, reverse proxy providers apply can provide this feature only to this level of an internet server and not the client layer. instead of establishing firewalls at Web server layers that could include many servers and different configurations, the majority of firewall security can be focused on the reverse proxy layer. In addition, getting rid of the hassle of interfacing with firewalls and interacting with client requests outside of web servers allows firewalls to concentrate on providing resources.

If there are several servers operating in reverse proxy The reverse proxy takes care of how requests are routed through which server. A number of web servers could be connected to one server offering different types of resource or a mix of the two. They use the HTTP protocol similar to a traditional web server, but can additionally include protocols for application servers like FastCGI. You can configure reverse proxy servers to send users to particular servers based on the kind of resource they're searching for or to follow certain guidelines regarding the load of traffic.

Reverse proxies may also benefit from their positioning on top of web servers due to the power of caching. Large static assets can be set up with caching rules in order to avoid hitting web servers on every request. Certain options allow users to serve static assets without connecting with the server in any way. Furthermore the reverse proxy is able to be able to compress these assets.

The popular Nginx web server also functions as an extremely popular reverse proxy service. It is factual that Apache web server is equipped with a reverse proxy feature, it's a feature available only for Apache however Nginx was initially designed and is focused on reverse proxy features.

Differentiating Forward and reverse proxy Use Differentiating Forward Proxy and Reverse Proxy Use

Since "forward" in addition to "reverse" are associated with a sense of directionality, and false analogies to "incoming" and "outgoing" traffic These labels are prone to confusion because both kinds of proxy respond to requests and receive responses. In addition, the most effective method of separating between forward and reverse proxy is to analyze the requirements of the app you're creating.

Reverse proxy is a useful tool when you're creating a solution for serving applications on the web via the internet. Reverse proxy servers represent your website every time you use the web.

Forward proxy is a great tool for displaying clients to use for personal purposes, or in a work environment. They are a representation of information about the client when you use the internet.

Separating by case of use instead of focusing on the similar name conventions will ensure you aren't confused.

Conclusion

This article explains what a proxy is and compares two types of proxy that are reverse proxy and the forward proxy. Practical examples of usage as well as a discussion of the most beneficial characteristics were used to define the difference between forward and reverse proxies. If you're interested in learning more about the possibilities of proxies you must follow our tutorial on how to configure Nginx as a reverse proxy to Apache on one Ubuntu 20.04 server.

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