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It is a proxy is often referred to as proxy server software that serves in the role of an intermediary a server and a client on the internet. Without a proxy, a user can send a request a source directly through a server, and the server will then send the resource directly back to the client. While this process is simple to understand and implement, however it is possible that the use of proxy servers may provide advantages in the form of enhanced efficiency, privacy, security as well as other benefits. As an additional pass-through layer, proxies act as a guardian for the internet between clients and servers.

In general the mix of server hardware and proxy software is referred as a proxy server. In this article, we will examine proxies that are typically thought to be software, and specifically, in relation to servers on the internet. The article will provide a detailed discussion of the two principal kinds of proxies: two types: a forward proxy and a reverse proxy. Each has its own usage case, but they're often misunderstood because of a similar name convention.

This article will give you an understanding of what proxies and subtypes of them are, as well as how they are useful in common setups. In this article, you'll learn what scenarios in which you can benefit from a proxy and then choose the best option in between forward and reverse proxy in each situation.

Understanding Forward Proxies

A forward proxy, often known as open proxy, also known as open proxy is an agent used by users who are trying to transmit a request over the internet to an original server. In this case any requests from the client will instead be sent through this forward proxy. In this case an agent acting on behalf of the forward proxy in the instead of the user will review the request. First, it will determine if the client is allowed to make requests via this particular forward proxy. It will then reject any request, or redirect it to the server that made the request. The client has no access to internet in any way, it is only able to access the information the forward proxy permits the client access.

The main reason people use forward proxy is the need for increased privacy or anonymity online. Forward proxy makes use of web services as clients, and in this process, it uses an alternative IP address in addition to the IP address of your client.

Depending on how it's been installed in the past forward proxy servers may provide a variety of features that allow 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 may also be utilized in systems to provide central security and access based on permissions such as in a workplace. In the event that all internet traffic goes by an open forward proxy system, admins may permit only a few clients access to the internet through a common firewall. Instead of having firewalls on the client layer which may comprise a variety of machines with different configurations as well as users, firewalls may be set up at the forward proxy layer.

Keep in mind to set forward proxy preferences need to be set up manually before they can be used for use and reverse proxy servers are not able to be observed by the user. The type of IP address the user's IP address, the server where it originated through the forward proxy, privacy and anonymity can be granted or to go unnoticed.

There are numerous options to consider for forward proxy options:

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  Apache The Apache is a well-known open-source web server with forward proxy functions.
  
  
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  Nginx: Another well-known open-source server for hosting websites with forward proxy capabilities.
  
  
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  Squid is an open-source forward proxy that makes use of the HTTP protocol. It's not a complete Web Server System. It is possible to refer to our guide on how you can create Squid proxy to connect privately on Ubuntu 20.04.
  
  
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  Dante forward proxy that runs the SOCKS protocol, instead of HTTP this makes it better to be used in situations like peer-to-peer connections. It is also possible to look into how to install an Dante proxy that allows private connections to Ubuntu 20.04
  
  

Understanding Reverse Proxies

Reverse proxy acts in the role of an intermediary a web server and it takes responsibility for incoming requests from clients for the benefit of. This web server may serve as a single server or multiple servers. It could also be an application-server such as Gunicorn. In any of these scenarios the request will come from a customer via the internet as a whole. Typically, the request will be directly sent to the webserver that has all the information the user is seeking. A reverse proxy is a 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 isn't different from communicating with the server on its own. It's functionally the same however the client is unable to tell the difference. Client requests a resource and is then provided with it without additional configuration on the part of 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 feature has been added to the app.
  
  

Although centralized security is a benefit of both forward and reverse proxy systems, reverse proxy providers apply can provide this feature only to this web server layer and not the client layer. Instead of having firewalls on Web server layers that could include many servers and different configurations, the bulk of firewall security can be focused on the reverse proxy layer. Furthermore, removing of the burden of interacting with firewalls as well as interfacing with client requests outside of web servers allows the firewall to concentrate on providing the necessary resources.

If multiple servers are operating in reverse proxy, the reverse proxy also determines the way requests are routed to which server. A number of web servers could be operating on this server each offering different kinds of resource or a mixture of the two. These servers use the HTTP protocol similar to a traditional web server, however they may also include applications server protocols like FastCGI. You can set up reverse proxy servers to send clients to specific servers according to the type of resource they're seeking or to adhere to certain guidelines on the volume of traffic.

Reverse proxies may benefit from their position above web servers by virtue of caching. The large static files can be configured using caching rules to prevent the web server from being hit with every request. Certain options allow users to serve directly static assets, without connecting with the server in any way. Furthermore, the reverse proxy can be able to compress these assets.

The well-known Nginx web server is also a well-known reverse proxy solution. Although it is real that Apache web server is equipped with reverse proxy function, it's an additional feature available only for Apache however Nginx was designed originally for and is focused on reverse proxy features.

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

Since "forward" in addition to "reverse" have connotations of directionality as well as misleading comparisons to "incoming" or "outgoing" traffic, these labels can confuse since both types of proxy handle responses and requests. In addition, the most effective method of separating between reverse and forward proxy is to look at the requirements of the app that you're developing.

Reverse proxy can be a valuable tool when you're creating a solution for serving web-based applications over the internet. Reverse proxy servers represent your website every time you use the web.

Forward proxy is useful for showing clients to show for personal use or even in a workplace. The forward proxy displays the information of the client whenever you interact on the internet.

The practice of separating by use case instead of focusing on the similar name conventions will ensure you won't be confused.

Conclusion

This article describes the definition of a proxy with the two main types that are forward proxy and reverse proxy. Practical examples of use and a discussion of most beneficial attributes were used to determine between reverse and forward proxies. If you're interested in learning more about the possibilities of proxies then you should follow our tutorial on how to set up Nginx as reverse proxy to Apache on an Ubuntu 20.04 server.

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