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It is a proxy is also known as an application for a proxy server that acts to act as an intermediary a server and a client on the internet. Without the proxy, a user would be able to send a request a source directly through a server and the server would then deliver the requested resource directly to the client. While this process is simple to understand and implement, however the addition of proxy servers may provide benefits in terms of increased security, performance, privacy, and so on. As a further layer of pass-through proxy servers act as a security layer to the internet between users and servers.

In general, the combination of server hardware and proxy software is also often described as a proxy server. The article we will focus on proxies typically considered to be software, and specifically, in relation to servers on the internet. There will be a discussion of the two main types of proxies: a forward proxy and a reverse proxy. Each has their own use scenario, but they can be confused because of a similar name convention.

This article will give you an understanding of what proxy services as well as their subtypes are, as well as how they are useful in common setups. In this article, you'll understand how to discern the scenarios in which you can benefit from a proxy and then choose the best option in between reverse and forward proxy for each scenario.

Understanding Forward Proxies

The forward proxy also called the open proxy is an agent used by the user trying to make a request through the internet to a source server. In this case all requests from the client are instead directed through an forward proxy. In this case, an agent acting on behalf of the forward proxy in place of the client will examine the request. First, it will check if the client is permitted to submit requests via this specific forward proxy. It then decides whether to reject any request, or redirect it to the original server. The client does not have a direct connection to the internet, it can only access what the forward proxy grants it access to.

The main reason people utilize forward proxy is to increase privacy or security on the internet. A forward proxy uses an internet connection as a client as such it assigns an alternative IP address in addition to your client's IP address.

Depending on how they were installed in the past, forward proxy servers can offer a range of features, allowing you to:

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

Forward proxies can also be employed in systems that provide central security as well as permission-based access, like in workplaces. If all internet traffic flows through an open forward proxy layer, administrators are able to permit only a few clients access to the internet via an common firewall. Instead of maintaining firewalls for the client layer which may comprise a variety of machines with different configurations as well as users, firewalls may be installed at an forward proxy layer.

Be aware the forward proxy configurations must be manually setup before they are able to be used to use them in reverse proxies, whereas forward proxies are able to not be observed 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 unnoticed.

There are many possibilities to look into for forward-looking proxy services:

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  Apache The Apache is a popular open-source server that offers 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 is an open-source forward proxy that uses the HTTP protocol. It's not a complete web server system. You can refer to our tutorial on how to set up 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 this makes it better to be used in situations like peer-to-peer traffic. It is also possible to look into the steps to install the Dante proxy that allows private connections in Ubuntu 20.04
  
  

Understanding Reverse Proxies

A reverse proxy functions to act as an intermediary a web server, and takes responsibility for incoming requests from users for the benefit of. This server could function as a single server, or a number of servers. It could also be an application-server like Gunicorn. In any of these scenarios, a request would originate from a user on the internet generally. The request would typically be sent directly to the web server that holds all the resources that the client is seeking. Reverse proxy acts as an intermediary that shields the webserver from direct interaction with the internet.

From the perspective of the user's viewpoint from the perspective of a client reverse proxy use is not different from interacting with the server in its own. It is functionally similar, but the user cannot tell the distinction. The client requests a resource, and is then provided with it without additional configuration by the client.

Reverse proxy providers provide features like:

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  The web server is protected centrally.
  
  
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  The direction of traffic coming in is to you based on rules you set up.
  
  
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  The caching function has been added to the app.
  
  

While central security is a benefit of both reverse and forward proxy systems, reverse proxy providers apply this feature to this layer of the internet server, and not the client layer. instead of maintaining firewalls at Web server layers that could comprise multiple servers and various configurations, the majority of firewall security is concentrated on the reverse proxy layer. In addition, getting rid of the hassle of interfacing with firewalls and interfacing with client requests outside of web servers allows firewalls to focus on supplying the necessary resources.

If there are several servers running in a reverse proxy, the reverse proxy also handles how requests are routed through which server. Many web servers may be running on this server each offering different types of resource or a mixture of the two. These servers use the HTTP protocol similar to a traditional web server, however they can additionally include application server protocols such as FastCGI. You can set up a reverse proxy to route users to particular servers based on the type of resource they're searching for or to adhere to certain guidelines regarding the load of traffic.

Reverse proxies may also benefit from their positioning above web servers by virtue of caching. The large static files can be arranged with caching rules to avoid hitting web servers with each request. Certain options allow users to directly serve static files without having to connect with the server in any way. Furthermore the reverse proxy is able to manage compressing these assets.

The popular Nginx web server is also a popular reverse proxy solution. Although it is factual that Apache web server is also equipped with reverse proxy feature, it's a option that's available to Apache but Nginx was initially designed and is focused on reverse proxy features.

Differentiating Forward and reverse proxy Utilizing Differentiating Forward and Reverse Proxy Utilization

Since "forward" along with "reverse" come with connotations of directionality and misleading analogies to "incoming" as well as "outgoing" traffic The labels could be confusing because both types of proxies process requests and responses. Better yet, the best method of separating between reverse and forward proxy is to analyze the requirements of the app that you're developing.

Reverse proxy is a useful tool when you're creating a solution for serving applications on the web via the internet. They act as your web servers when you connect to the internet.

Forward proxy is a great tool for displaying clients to use for personal purposes, or in a working 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 names will ensure that you aren't confused.

Conclusion

This article will explain what a proxy is and compares the two main types that are reverse proxy and the forward proxy. Examples of how to use them and a discussion of most advantageous characteristics were used to define the difference between forward and reverse proxies. If you're looking to explore the possibilities of proxy servers, then you should read our guide on how to configure Nginx as a reverse proxy for Apache on one Ubuntu 20.04 server.

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