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It is a proxy is often referred to as an application for a proxy server that serves in the role of an intermediary a server and a client via the internet. Without the proxy, a client would be able to send a request a source directly through a server, and the server will then send the requested resource directly to the client. While this process is simple to grasp and implement however the addition of proxy servers can offer advantages such as enhanced efficiency, privacy, security and more. As an additional layer of pass-through, proxies act as a security layer for the internet between clients and servers.

In general the case of server hardware and proxy software is also often called a proxy server. This article we'll examine proxies that are typically thought to be software, and specifically with regard to web servers. There will be a discussion of the two main types of proxies, which are the forward proxy and reverse proxy. reverse proxy. Each has its own specific usage case, but they're often misunderstood because of a similar name convention.

This article will provide you with some understanding about what proxies as well as their subtypes are, and their use in the common configurations. In this article, you'll understand how to recognize the situations that you can gain by a proxy. You'll also be able to pick the best choice between reverse and forward proxy for each scenario.

Understanding Forward Proxies

The forward proxy also known as the open proxy is an agent used by a user who is trying to make a request through the internet to an origin server. If this is the case, any attempts to send requests from the client will instead be directed through this forward proxy. In this scenario, the forward proxy acting in the in the place of the customer will look into the request. The first step is to determine whether the client is allowed to send requests through this specific forward proxy. The forward proxy will then deny any request or forward it to the server that made the request. The client does not have a directly connected to the web; it only has access to what the forward proxy grants the client access.

The primary reason for people to use forward proxy is the need for greater privacy or protection on the internet. Forward proxy makes use of an internet connection as a client and as such it assigns an alternative IP address to your client's IP address.

Depending on how it's been installed in the past forward proxy servers may offer a range of features and options, including:

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  Avoid ad tracking.
  
  
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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 as well as permission-based access, for instance in workplaces. If all internet traffic is routed through an open forward proxy layer, administrators are able to restrict access to only certain clients to the internet through a common firewall. Instead of having firewalls on the client layer that could comprise a variety of machines with different configurations or users may be set up at the forward proxy layer.

Keep in mind that forward proxy settings need to be set up manually prior to their use in order to be used, while reverse proxy settings can't be observed by the user. The type of IP address the user's IP address, the server where it originated by the forward proxy privacy and anonymity can be granted or unnoticed.

There are many possibilities to look into for forward-looking proxy services:

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  Apache The Apache is a popular open-source web server with forward proxy features.
  
  
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  Nginx is another well-known open-source server for hosting websites with forward proxy features.
  
  
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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. We recommend you to read our guide on how to create a Squid proxy for private connections on Ubuntu 20.04.
  
  
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  Dante forward proxy which runs the SOCKS protocol, instead of HTTP which makes it more suitable for situations such as peer-to-peer traffic. It is also possible to look into how to install an Dante proxy to permit private connections to Ubuntu 20.04
  
  

Understanding Reverse Proxies

Reverse proxy acts to act as an intermediary a web server and takes care of incoming requests from customers on behalf of. This server could function as a one server or multiple servers. Additionally, it can become an application-server such as Gunicorn. In either of these scenarios, a request would be made by a client via the internet generally. In most cases, the request will be directly sent to the webserver that has all the information the user is seeking. A reverse proxy functions as an intermediary, shielding the webserver from direct contact with the open internet.

From the point of view of a user from a client's perspective reverse proxy use is similar to interacting with the server by itself. It is functionally similar, but the user is unable to tell the distinction. Client asks for a resource is then provided with it without additional configuration required on the part of the client.

Reverse proxy providers provide features like:

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  The server for the web is secure centrally.
  
  
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  Incoming traffic is directed based upon rules you can configure.
  
  
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  The caching function is now available to users.
  
  

While central security is a benefit of both reverse and forward proxy systems, reverse proxy providers provide this feature to this level of an internet server, and not to the client layer. instead of establishing firewalls at Web server layers that could comprise multiple servers and various configurations, the majority of firewall security can be concentrated on the reverse proxy layer. Additionally, getting rid of the responsibility of interacting with firewalls and interacting with clients' requests that are not on web servers permits the firewall to focus on providing resources.

If there are multiple servers running in reverse proxy and the reverse proxy takes care of the method by which requests are routed to which server. A number of web servers could be operating on one server each offering different types of resource or a combination of both. They use the HTTP protocol like a traditional web server, but may also include protocols for application servers like FastCGI. It is possible to configure a reverse proxy to route clients to specific servers based on the kind of resource they are looking for, or to observe certain guidelines on the volume of traffic.

Reverse proxies may also benefit from their positioning over web servers through the capability of caching. Large static assets can be arranged using caching rules to prevent hitting web servers with each request. There are a few options that allow users to directly serve static files without having to connect directly to web servers at all. In addition the reverse proxy is able to handle compressing these assets.

The popular Nginx web server is also a popular reverse proxy solution. While it's true that the Apache web server is equipped with a reverse proxy feature, it's a option that's available to Apache however Nginx was designed originally for and is focused on reverse proxy functions.

Differentiating Forward and reverse proxy Use Differentiating Forward and Reverse Proxy Use

Because "forward" in addition to "reverse" come with connotations of directionality and misleading distinctions between "incoming" or "outgoing" traffic, these labels can confuse because both kinds of proxy respond to requests and receive responses. Better yet, the best method of separating between reverse and forward proxy is to study the requirements of the application you're creating.

Reverse proxy is a useful tool when you're designing a solution to deliver web-based applications via the internet. They act as your web servers every time you use the internet.

Forward proxy is a great tool for displaying clients for personal use or even in a workplace. The forward proxy displays the information of the client every time you connect to the internet.

The practice of segregating by use case rather than using the same naming conventions will ensure that you don't get confused.

Conclusion

This article will explain what a proxy is with the two major types which are the forward proxy and reverse proxy. Practical examples of use as well as a discussion of the most advantageous attributes were used to determine between reverse and forward proxies. If you're interested in exploring the possibilities of proxies you must read our guide on how to configure Nginx as a reverse proxy for Apache on an Ubuntu 20.04 server.

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