Four Magical Thoughts Tricks That will help you Declutter Proxy Sites

An proxy often referred to as a proxy server is software that functions as mediator between client and server over the internet. Without proxy, a user will send a request directly to the server and it will serve that resource to its user directly. While this procedure is easy to understand and implement using proxy services, it may provide benefits in the form of increased performance, privacy, security, and much more. In addition to providing a layer of protection, a proxy acts as a gatekeeper for the internet, separating servers and clients.

In general, the set of server hardware with installed proxy software is commonly called a proxy server. In this post, we'll focus on proxy servers, which are generally defined as software, and within the context of web servers. This article will give a detailed breakdown of the two main types of proxy servers: the forward proxy and the reverse proxy. Each type has a different application, and is frequently confused due to a similar the namesake convention.

This article will give you an idea of the types of proxy services and what their subtypes are and their importance in common setups. After reading the article you'll understand how to recognize the situations in which an effective proxy is beneficial and pick the right alternative between forward and reverse proxy depending on the circumstance.

Understanding Forward Proxies

A forward proxy, also known as an open proxy serves as an intermediary between a client that is trying to send a request via the internet to an source server. In this scenario, every request made by the client will instead be sent straight through forward-proxy. A forward proxy in the place of the client will examine the request. First, it will determine if the client is permitted to receive requests from this particular forward proxy. Then, it will deny any request, or redirect it to the original server. The client has no directly access to internet. It can access only what forward proxy grants the client access.

The most frequent uses for forward proxies is to improve privacy or security while using the internet. Forward proxy utilizes the internet as a client, and in that process, it will use an alternative IP address for the client's original IP address.

Based on the way it is configured based on the configuration forward proxy can provide different features depending upon the configuration, which allows users to:

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  Beware of ads that track you.
  
  
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  Circumvent surveillance.
  
  
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  You can determine restrictions based on your geographical area.
  
  

Forward proxies are also utilized in systems that provide central security and access to users based on permissions, for instance at an office. Internet traffic can go through a forward proxy that is open. an administrator is able to restrict access to certain clients to the internet that is protected by an common firewall. In lieu of having firewalls on the client layer, which could include multiple machines with various configurations and users, it is possible to install a firewall located at the front proxy layer.

Take note to note that settings for forward proxy need to be manually set up to use, but reverse proxies are likely to be ignored by the client. Based on the fact that the IP address of a user is passed to the server from where it originated via the forward proxy privacy and anonymity may be granted or hidden.

There are a myriad of options to consider for forward proxy options:

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  Apache is a well-known open source web server, that offers forward-looking proxy features.
  
  
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  Nginx: Another widely used open-source server for web hosting that has forward proxy features.
  
  
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  Squid: A free forward proxy which uses the HTTP protocol. It's not the complete web server. Take a look at our tutorial on how to install Squid proxy for private connections within Ubuntu 20.04.
  
  
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  Dante is a forward-looking proxy, which utilizes the SOCKS protocol instead of HTTP to make it more suitable for peer-to-peer communication. You may also want to know how to configure Dante proxy to allow connection to private networks in Ubuntu 20.04
  
  

Understanding Reverse Proxies

Reverse proxy functions as the web server that handles the incoming requests of customers on its behalf. The web server can be a single, or a number of servers. It may even be an application server such as Gunicorn. In any of these situations an application request comes through the internet. Most of the time the request will be directed directly to the web server, which will provide the information the client wants. In contrast, a reverse proxy acts as an intermediary, and separates your website server from communication with the internet's open.

From the point of view of the individual client's viewpoint reverse proxy is a process that reverse proxy isn't any different than communicating with Web server in direct contact. It's the same process however the client can't tell the difference. The client makes a request for an item, and it is followed by its receipt, without any additional configurations required for the user.

Reverse proxies provide options like:

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  A central layer of security that protects the server.
  
  
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  Incoming traffic is directed upon rules that you can decide to define.
  
  
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  New caching functionality has been added.
  
  

While centralized security is an advantage of both forward and reverse proxy, reverse proxy adds this for only the server layer, but not the client layer. Instead of focusing on upkeep of firewalls on the layer of web servers which can contain a variety of servers and various configurations, most of the firewall security is targeted towards the reverse proxy layer. Furthermore, the elimination of the responsibility of interacting with firewalls and interacting with clients who are far from web servers permits them to focus on serving the needs of their customers.

In the case of multiple servers running through reverse proxy reverse proxy is also responsible to direct which requests go through which server. There may be several web servers providing the same content, and each providing different services, or a mix of both. These servers can be using the HTTP protocol that is a standard web server, but they can also contain other protocols used by application servers like FastCGI. You can also configure reverse proxy settings to direct users to a specific server based on the service requested, or to follow certain guidelines regarding the load of traffic.

Reverse proxies can benefit from their position over web servers by giving them the ability to store data. Large static assets can be set up with caching policy to avoid hitting web servers on every request. Certain solutions allow you to serve static content directly without contacting servers on the internet in any manner. Furthermore the reverse proxy is able to handle compressing these assets.

The well-known Nginx web server also functions as a popular reverse proxy solution. While there is an equivalent feature available within the Apache web server, it does include reverse proxy capabilities as an additional feature that is available for Apache while Nginx was initially designed to and is focused on reverse proxy functionality.

Differentiating Forward Proxy and Reverse Proxy Use Situations

Since "forward" along with "reverse" conveys the notion of directionality, as well as misleading comparisons to "incoming" as well as "outgoing" traffic These labels could be confusing because both kinds of proxy systems process requests as well as responses. Better yet, the best method to distinguish between the reverse and forward proxy types is to study the specifications of the application that you're building.

A reverse proxy can be helpful when building a solution to serve web applications on the internet. They are your servers whenever you connect to the internet.

Forward proxy are helpful when displayed in front of customers to facilitate your personal use, or even in a work setting. They represent your client traffic through any interaction with the internet.

The use of case-based differentiation instead of focusing solely on common naming conventions can aid in avoidance of confusion.

Conclusion

The article clarified the meaning of aproxy is and the two primary types of proxy: the forward proxy and the reverse proxy. Practical applications and a discussion of the attributes that are beneficial were used to determine forward proxies as well as reverse proxies. If you're interested in learning more about the implementation of proxy servers then you should check out our tutorial on how to set up Nginx as reverse and web server proxy for Apache on one Ubuntu 20.04 Server.

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