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It is an proxy is also known as proxy server software that acts in the middle between client and server on internet. Without a proxy, a client will send a request for the resource directly to the server and it would serve that resource to its user directly. This is a simple method to grasp and implement, the addition of proxies can provide benefits in terms of greater performance and privacy, security and many more. In addition to being able to pass over, the proxy serves as a security guard to the internet between users and servers.

The general consensus is this: the mix of hardware for servers and installed proxy software is often called proxy servers. In this article, we'll concentrate on proxies that are typically described as software as well as those used to work in conjunction with web servers. This article will provide the full description of two kinds of proxies: that is one that is a forward proxy and reverse proxy. reverse proxy. Each type is unique in its use, often confused because of the same name convention.

This article will provide some knowledge about the different types of proxy and subtypes they have, and what ways in which they can be beneficial in common configurations. Through this article, you'll be able to determine the situations where a proxy can be advantageous, and choose the best forward proxy or reverse proxy for a particular scenario.

Understanding Forward Proxies

The forward proxy, also known by the name of the open proxy is the representative of a customer that is trying to send an internet request to an the server that originated it. In this situation it is the case that all requests from the client will rather be sent to the forward proxy. In this situation the forward proxy, in lieu of the client will scrutinize the request. At the beginning, it will decide whether the client is permitted to forward requests through this particular forward proxy. Then, it decides to deny the request or send it back to its original server. It's not able to directly connect with the web. It can only access what the forward proxy allows the forward proxy to connect.

The most common use for forward proxies is for more privacy or security on the internet. Forward proxy utilizes the internet as a separate client. In this process, it can use another IP address in opposition to the IP address that is used by the client.

Depending on how they were configured in the past, forward proxy servers can give you a variety of options. They allow you to:

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  Beware of ads that track you.
  
  
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  Circumvent surveillance.
  
  
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  Establish restrictions based on the place of residence.
  
  

Forward proxies are also used in systems that offer central security and permit-based access, such as in a workplace. If all internet traffic passes via an open forward proxy,, the administrator is able to permit only a handful of users online access, that is blocked by a common firewall. Instead of ensuring firewalls are in place at the level of client which may include multiple machines that are different in terms of user and environment the firewall can be placed at the layer which redirects traffic from proxy servers.

Be aware that forward proxies need to be manually setup to be used, while reverse proxies can be not recognized by clients. Depending on whether the IP address of the client is passed on to the origin server via the forward proxy Privacy and anonymity can be made more transparent.

There are a myriad of possibilities to consider for forward proxies:

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  Apache An open source, well-known web server that provides forward proxy capabilities.
  
  
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  Nginx A renowned open-source webserver with forward proxy capabilities.
  
  
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  Squid is an open-source forward proxy which makes use of it's HTTP protocol. This option doesn't include an entire web server. Check out our article on the best way to setup Squid proxy to allow connection with private networks in Ubuntu 20.04.
  
  
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  Dante forward proxy which uses the SOCKS protocol rather than HTTP, making it better suited for scenarios like peer-to -peer traffic. You might also want to learn how to setup the Dante proxy to allow private connections in Ubuntu 20.04
  
  

Understanding Reverse Proxies

Reverse proxy acts as a representative of a web server that handles requests from customers on its behalf. The web server may represent a single or multiple servers. Furthermore, it could represent an application server such as Gunicorn. In any of these situations it is possible to receive a request via a user on the web at large. Most of the time the request will be directed directly to the server, along with the information the user is seeking. Reverse proxy, however, is a intermediary, and blocks your web server from interaction with the open internet.

From a client's perspective from a client's perspective using a reverse proxy is not different from communicating directly with the webserver in direct communication. It's basically the same and the client can't discern the difference. The client requests a resource and then receives it, with no additional configurations required for the end user.

Reverse proxy proxies may offer options, such as:

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  Centrally secured for Web Server Layer.
  
  
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  Sending traffic to be directed according to rules that you can establish.
  
  
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  Additional functions for caching.
  
  

Although central security can be a benefit of both forward and reverse proxy service, reverse proxy provides this benefit to only the server layer and not to the layer that connects to the client. Instead of maintaining firewalls at the web server layer which can contain several servers that have different configurations, the bulk of firewall security is centered at the layer of reverse proxy. Furthermore, removing the obligation of working with firewalls as well as responding to requests from clients that are not connected to web servers allows the firewall to concentrate on serving the needs of their customers.

If there are several servers in a reverse proxy,, the reverse proxy is also in charge of how requests are routed on which server. There could be multiple web servers operating from the exact same computer and serving various kinds of resources or a combination of the two. These servers may use the HTTP protocol in the same way as a traditional web server. They may also include protocols for applications such as FastCGI. You can set up reverse proxy that directs customers to specific servers based on the type of resource they're searching for, or comply with certain rules regarding traffic load.

Reverse proxies can also benefit by their position before web servers by delivering the capability of caching. Large static assets are able to be configured using caching guidelines to avoid the web server from being hit on every request, with some solutions offering the possibility to serve static files directly without having to connect to the internet server even once. Additionally, reverse proxy could manage the compression of these assets.

The well-known Nginx web server is known as a reverse proxy service. While you can use it, Apache web server, it is equipped with a reverse proxy feature it's an additional feature that is available for Apache however Nginx was initially designed for and was designed to perform the reverse proxy function.

Differentiating Forward and Reverse Proxy Utilizing Differentiation of Forward Proxy and Reverse Use

Because "forward" as well as "reverse" come with connotations of directionality, as well as false connections to "incoming" as well as "outgoing" traffic. These labels can be confusing as both kinds of proxy can respond to requests as well as responses. An alternative method to differentiate between forward and reverse proxy is to look at the requirements of the app you're developing.

A reverse proxy could be beneficial in the development of a solution to provide web-based applications over the internet. They serve as your servers whenever you connect to the internet.

Forward proxy are useful when used before a client for your personal use, or in the workplace. They are a representation of your traffic when you are on the internet.

A distinction based on use case rather than focusing only on similar naming conventions will help you avoid confusion.

Conclusion

This article clarifies the meaning of a proxy with the two major types that are forward proxy and reverse proxy. Practical scenarios for application and a look at useful features were used to differentiate forward proxies and reverse proxies. If you're interested in learning more about the possibilities of proxies, then you can check out our tutorial on how to configure Nginx as reverse and web server proxy on Apache on one Ubuntu 20.04 server.

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