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"proxy" refers to a proxy server "proxy" refers to proxy servers. A proxy or proxy server. It is a software that sits in the middle between client and server on the internet. Without the proxy, the client could make a request for a service direct to a server, and it would deliver the requested resource directly back towards the customer. It is easy to comprehend and implement, using proxies can provide benefits through improved performance, privacy, security and more. As a layer of pass-through, proxy services act as a gatekeeper on the internet between clients and servers.

The general collection of server hardware and proxy software installed is often referred to as proxy servers. This article will focus on proxy servers that are generally described as software as well as those that are used to complement web servers. The article will offer an explanation of two types, namely forward proxy and reverse proxy. forward proxy and reverse proxy. reverse proxy. Each type has its own usage, which can be confusing because of the overlap in terminology.

This article will provide an idea of the what proxies as well as their subtypes and also their value in the typical settings. After reading this article, you will be able to discern the situations where an effective proxy can be advantageous, and decide on the best option for you between forward and reverse proxy for any situation.

Understanding Forward Proxies

In other words forward proxy also called or an open proxy is an agent for the user trying to make requests online to a source server. In this scenario, every request made by the client will rather be sent through an forward proxy. In this situation the forward proxy acting on behalf of the client, will look into the request. At first it will decide if the client is authorized to send requests to this particular forward proxy. Then, it will either deny requests or redirect it to its origin server. The client is not able to have direct connection to the internet; it has access to only what the forward proxy allows the client to access.

The primary reason for people to use forward proxies is for more privacy or security on the internet. A forward proxy connects to the internet on behalf of an individual client, and when it does this, it may utilize an IP address that is distinct from the IP address used by the user.

Depending on the method by which it's set up the forward proxy may provide a variety of functions as well as the capability to:

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  Beware of Ad-trackers.
  
  
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  Circumvent surveillance.
  
  
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  You can determine restrictions based on where you live.
  
  

Forward proxies are also utilized in systems that provide central security as well as access granted on a permission basis, like, in a workplace. When all internet traffic goes through a common forward proxy layer, administrators are able to restrict only a small number of users online access that is blocked by a common firewall. Instead of establishing firewalls for the client layer, which can be used by multiple computers with various configurations and environments the firewall can be added to this forward proxy layer.

Remember the fact that forward proxy servers must be manually setup before they are able to be used and reverse proxies can be disregarded by clients. Based on the fact that an IP address from the user has been transmitted to the origin server by the forward proxy, privacy and anonymity can be granted or hidden from view.

There are a myriad of choices to consider for forward proxies.

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  Apache The Apache is a well-known open-source web server that offers forward proxy capabilities.
  
  
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  Nginx: Another renowned open-source web server that has forward proxy capabilities.
  
  
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  Squid is an open-source forward proxy using the HTTP protocol. This doesn't offer the complete Web server platform. You can check out our guide on the most efficient method to install Squid proxy to connect private networks in Ubuntu 20.04.
  
  
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  Dante forward proxy which runs the SOCKS protocol instead of HTTP this makes it better suited for scenarios such as peer-to-peer connections. You could also look into how to set up Dante proxy to allow connection to private networks in Ubuntu 20.04
  
  

Understanding Reverse Proxies

Reverse proxy acts to act as an agent of a server that manages requests received by customers on its behalf. This web server can serve as a one server or a number of servers. It can also comprise an application server, like Gunicorn. In either case, a request could be made by a user of the internet at large. Typically, the request will be directly sent to the server on the internet which holds the information that the client wants. Contrarily, a reverse proxy is a intermediary that isolates the web server from direct communication with the open internet.

From the viewpoint of the client, interfacing using reverse proxy isn't any different than interacting directly with an internet server. It's the same, however clients aren't able to tell the difference. The client asks for an item and receives it without further configuration required by the client.

Reverse proxy providers provide features like:

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  Security centralized to web server.
  
  
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  The direction of traffic coming in is based upon rules that you set up.
  
  
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  Additional features for caching.
  
  

Although central security is a benefit of both reverse and forward proxy, reverse proxies add this feature only to the layer on the webserver and not the client layer. Instead of focusing on maintaining firewalls at the server layer which may include multiple servers that have various configurations, the bulk of firewall security is focused at the reverse proxy layer. Furthermore, taking the burden of dealing with firewalls and coordinating requests by clients away from web servers allows the firewall to focus on supplying services.

If there are multiple servers running behind a reverse proxy the reverse proxy could be also responsible for directing what requests are directed to which servers. Multiple web servers could be running on the same server, serving different kinds of services or a combination of both. These servers use an HTTP protocol to perform the role of an ordinary web server. They can also be equipped with application server protocols such as FastCGI. You can set up a reverse proxy to route clients to specific servers in accordance with the resource being requested, or to adhere to specific rules for the load of traffic.

Reverse proxies also have the ability to make use of their location ahead of web servers by using caching functions. The large static files can be configured with caching policies to avoid the web server from being hit with every request, with some solutions that allow you to serve static content without having to connect to the servers in any manner. Additionally reverse proxy is capable of compressing these assets.

The popular Nginx web server also functions as a reliable reverse proxy service. While Apache is also an alternative to reverse proxy, it is not the only one. Apache web server also includes reverse proxy capabilities, and can be a second option for Apache and Nginx was designed initially for and focuses on the reverse proxy features.

Differentiating Forward Proxy from Reverse Proxy Use Examples

Since "forward" as well as "reverse" are both associated with the notion of directionality and false comparisons to "incoming" or "outgoing" traffic the labels can be confusing since both types of proxy are able to handle both requests and responses. In addition, the most effective method of separating the reverse as well as forward proxy services is to consider the requirements of the app that you're developing.

A reverse proxy could be beneficial when you're developing an application that can serve websites on the internet. They are your web servers for any interaction on the Internet.

A forward proxy is useful when it is used before customers for your personal use or in a professional setting. They are your client's representative in any interactions on the internet.

A case-based distinction instead of focusing on the similar naming conventions can assist you in avoidance of confusion.

Conclusion

This article will explain what a "proxy" is with the two types that are the reverse proxy and forward proxy. Practical scenarios to use them and a look at advantageous characteristics were used to define different types of proxies that are reverse and forward. If you're interested in learning how to set up proxies, read our tutorial on how to configure Nginx as a web server and reverse proxy for Apache on an Ubuntu 20.04 server.

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