The World's Most Unusual Proxy Sites

It is a proxy is also referred to as proxy server software that acts in the middle between client and server on internet. Without the use of a proxy, users could send a request for the resource directly to a server and it would deliver the requested resource directly to the user. While this approach is straightforward to grasp and implement, adding proxies offers advantages in the form of greater performance as well as privacy, security and much more. As an additional layer of being able to pass between, it serves as a guardian for the internet, separating clients and servers.

The general consensus is this: the mix of hardware for servers and installed proxy software is often referred too as proxy servers. In this article, we will focus on proxies typically described as software as well as those used together with web servers. This article will present a detailed breakdown of two types of proxy: that is one that is a forward proxy and one called a reverse proxy. Each type comes with its own specific use case and is often misunderstood due to the similar namesake convention.

This article will provide you with some understanding about what proxies are and what subtypes they have, and what ways they can be useful in common configurations. After reading this article you'll learn to determine the situations in which a proxy is useful, and then decide the appropriate choice for forward proxy or reverse proxy for a particular scenario.

Understanding Forward Proxies

The forward proxy sometimes known in the form of the open proxy is the representative of a customer that is trying to route a request through the internet to an the server that originated it. In this scenario, it's the situation that all requests coming from the client are directed via this forward proxy. In this situation the forward proxy, instead of the client, will scrutinize the request. In the beginning, it decides if the client is allowed to send requests via this particular forward proxy. It then decides whether to deny this request and send it back to its original server. It's not able to direct connection via the Internet. It can only access what the forward proxy allows it to access.

A common reason for using forward proxies is for more privacy or security on the internet. A forward proxy uses the internet as a personal client, and during this process, it can utilize a different IP address in contrast to the IP address that is used by the client.

Depending on how it's been set up in the past, forward proxy servers can provide a range of options. They allow you to:

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  Avoid tracking ads.
  
  
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  Circumvent surveillance.
  
  
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  Find restrictions based on your location of residence.
  
  

Forward proxies are also employed in systems that provide central security and permit-based access, such as at work. If all internet traffic is routed by an open forward proxy an administrator is able to grant only a small number of clients access to the internet, which is filtered by a firewall that is common to all. Instead of ensuring firewalls are in place at the level of client that may include multiple machines that are different in terms of user and environment the firewall can be set up at the layer which is responsible for forwarding proxy data.

Remember that forward proxies have to be set up manually prior to use, whereas reverse proxies can be not recognized by clients. Depending on whether clients' IP addresses are transmitted to the origin server through the forward proxy, privacy and anonymity could get granted, or even made more transparent.

There are many possibilities to consider for forward proxies:

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  Apache An open source, well-known web server with forward proxy features.
  
  
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  Nginx is another well-known open-source web server that has forward proxy functionality.
  
  
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  Squid is an open source forward proxy that makes use of it's HTTP protocol. It doesn't provide an entire web server service. Check out our guide on the best method to set up Squid proxy for private connections in Ubuntu 20.04.
  
  
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  Dante forward proxy which uses the SOCKS protocol rather than HTTP and HTTP, which makes it more suitable for scenarios such as peer-to-peer traffic. It is also possible to learn how to configure the Dante proxy for private connections within Ubuntu 20.04
  
  

Understanding Reverse Proxies

Reverse proxy acts as a representative of a server on the internet that handles incoming requests from customers on its behalf. Web servers can represent a single or multiple servers. It could also be an application server such as Gunicorn. For any one of these cases, the request may come via the internet in general. Most of the time the request will be directed directly to the server along with the data the user is seeking. The reverse proxy acts as an intermediary and isolates your web server from interaction with the open internet.

From the perspective of a customer from a user's point of view reverse proxy isn't any different from communicating with you web server directly. It's basically the same and the client cannot discern the difference. Client requests resources, that is then followed by receiving it, without any additional configurations required for the end user.

Reverse proxy proxies may offer some features, including:

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  Centrally secured for Web Server Layer.
  
  
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  The sending of traffic according to rules that you set up.
  
  
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  Additional functionality to cache data.
  
  

Although central security can be a benefit of both reverse and forward proxy solutions, reverse proxy providers provide this benefit to only the server layer, not to the client layer. Instead of the need to maintain firewalls at the layer of web servers which may include multiple servers with various configurations, the bulk of firewall security resides on the reverse proxy layer. Additionally, getting rid of the necessity of interacting with firewalls and communicating with requests from clients who aren't connected to web servers allows the firewall to focus on meeting the needs of their customers.

If there are multiple servers that are in a reverse proxy, the reverse proxy is also in charge of how requests are routed to which server. Multiple web servers may be operating from the exact same computer and serving different kinds of resources or a combination of both. These servers can use the HTTP protocol to function as a standard web server. They can also use applications server protocols such as FastCGI. You can create a reverse proxy to direct clients to specific servers according to the type of resource they are seeking, or to comply with certain rules regarding traffic load.

Reverse proxies also can profit by their position prior to web servers, by providing the ability to cache. Large static assets are able to be configured with caching policies to avoid the web server from being hit on every request, with certain solutions offering the possibility to directly serve static resources without needing to connect to the internet server for even one time. In addition, reverse proxy could be able to handle compression of these assets.

The well-known Nginx web server is a well-known reverse proxy provider. You can also use Nginx, the Apache web server, it's also equipped with reverse proxy features however, it's a separate option that's available to Apache and Nginx was initially developed for and specifically designed for reverse proxy functionality.

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

Due to the fact that "forward" or "reverse" are associated with the notion of directionality, and false distinctions between "incoming" in addition to "outgoing" traffic These labels are confusing because both types of proxies are able to respond to requests as well as responses. A better approach to distinguish between reverse and forward proxy is to look at the requirements of the app you're developing.

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

Forward proxy is beneficial when they are used in front of the client for your personal use, or in a workplace setting. They can be used to represent the traffic of your clients whenever you use the internet.

A distinction based on use cases instead of focusing exclusively at similar names can aid in avoiding confusion.

Conclusion

This article clarifies the meaning of a proxy that includes two major types of proxy: the forward one and the reverse proxy. Practical scenarios for application and an exploration of useful features were used to distinguish between forward proxy and reverse proxies. If you're interested in exploring the possibilities of proxies, then check out our guide on how to set up Nginx as a reverse and webserver proxy using Apache on an Ubuntu 20.04 server.

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