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It is a proxy is sometimes referred to as proxy server software which serves in the role of an intermediary a server and a client on the internet. Without the proxy, a user can send a request a request directly to the server and the server will then send the requested resource directly to the client. This is not difficult to comprehend and implement it is possible that the use of proxy servers can offer benefits in terms of enhanced security, performance, privacy and more. As an additional pass-through layer, proxies act as a security layer to the internet between users and servers.

In general the case of server hardware with proxy software is also often referred as proxy servers. The article we'll concentrate on proxies commonly thought to be software, and specifically, in relation to servers on the internet. There will be a discussion of the two main types of proxies: which are two types: a forward proxy and a reverse proxy. Each has its own specific usage case, but they are often confused because of a similar name convention.

This article will give you some understanding about what proxies and subtypes of them are, as well as their use in common setups. In this article, you'll learn what scenarios in which you can benefit from a proxy and then select the most appropriate option between reverse and forward proxy for each scenario.

Understanding Forward Proxies

Forward proxy sometimes known as the open proxy is an agent for users who are trying to transmit a request over the internet to an origin server. In this case all requests from the client are instead sent through the forward proxy. In this scenario, this forward proxy, acting in the place of the customer will review the request. The first step is to determine if the client is permitted to submit requests via this particular forward proxy. It will then reject any request or forward it to the server that made the request. The client is not able to establish a directly connected to the web, it is only able to access the information the forward proxy permits it access to.

The primary reason for people to utilize forward proxy is to increase privacy or security online. Forward proxy utilizes an internet connection as a client as such it assigns an alternate IP address for the IP address of your client.

Based on the way it was installed in the past forward proxy servers could provide a variety of functions that allow you to:

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  Avoid ad tracking.
  
  
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  Circumvent surveillance.
  
  
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  Find restrictions based on the geolocation of your home.
  
  

Forward proxies are also utilized in systems to provide central security as well as permission-based access, for instance in workplaces. If all internet traffic goes through an open forward proxy layer, administrators may allow only specific clients access to the internet through a common firewall. Instead of establishing firewalls for the client layer which may comprise a variety of machines with different configurations or users can be set up at an forward proxy layer.

Keep in mind the forward proxy configurations have to be manually set up prior to their use to use them and reverse proxies are able to not be detected by users. The kind of IP address the user, it is relayed to the server from which it originated through the forward proxy privacy and anonymity may be granted, or left unnoticed.

There are many possibilities to look into for forward proxy options:

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  Apache The Apache is a popular open-source server with forward proxy features.
  
  
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  Nginx is another well-known open-source server for web hosting that has the ability to forward-proxy.
  
  
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  Squid: An open-source forward proxy that makes use of the HTTP protocol. It's not the entire web server system. It is possible to refer to our guide on how to create a Squid proxy for private connections in Ubuntu 20.04.
  
  
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  Dante forward proxy that runs using the SOCKS protocol rather than HTTP this makes it better suited for scenarios such as peer-to-peer connections. You can also look into the steps to install the Dante proxy to permit private connections to Ubuntu 20.04
  
  

Understanding Reverse Proxies

A reverse proxy functions in the role of an intermediary a web server and it takes the care of requests coming in from clients for the benefit of. The web server can function as a single server or a number of servers. It could also be an application-server, such as Gunicorn. In either case, a request would be made by a client via the internet as a whole. The request would typically be sent directly to the webserver that has all the resources the client wants. Reverse proxy acts as an intermediary, shielding the webserver from direct contact with the internet.

From the point of view of a client's view of the user reverse proxy use is similar to interacting with the server by itself. It is functionally identical, however the client cannot discern the distinction. The client requests a resource, and is then provided with it without additional configuration from the client.

Reverse proxy providers provide features like:

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  The web server is protected centrally.
  
  
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  The direction of traffic coming in is by rules that you set up.
  
  
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  The caching function has been added to the app.
  
  

Although centralized security is an advantage of both forward and reverse proxy systems, reverse proxy providers apply this feature to this level of an internet server, and not the layer that clients use. instead of establishing firewalls at Web server layers that may include many servers and different configurations, the bulk of firewall security can be focused on the reverse proxy layer. In addition, getting rid of the hassle of interfacing with firewalls as well as interfacing with client requests outside of web servers allows the firewall to concentrate on providing the necessary resources.

If multiple servers are operating in reverse proxy and the reverse proxy handles the method by which requests are routed to which server. There are many web servers operating on one server offering different types of resource or a mix of the two. These servers use the HTTP protocol like a traditional web server, but they may also include application server protocols such as FastCGI. You can configure reverse proxy to direct clients to specific servers based on the kind of resource they are seeking or to follow certain guidelines regarding the load of traffic.

Reverse proxies may benefit from their position over web servers through the capability of caching. Large static assets can be arranged with caching rules in order to avoid the web server from being hit with every request. Some options allowing users to directly serve static assets without connecting to the web server in any way. In addition, the reverse proxy can manage compressing these assets.

The well-known Nginx web server is also an extremely popular reverse proxy service. Although it is real that Apache web server is equipped with reverse proxy feature, it's an additional feature that is available for Apache but Nginx was designed originally for and is focused on reverse proxy features.

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

Because "forward" in addition to "reverse" have connotations of directionality, and false analogies to "incoming" as well as "outgoing" traffic, these labels can confuse since both types of proxy handle responses and requests. Better yet, the best method to differentiate between reverse and forward proxy is to analyze the requirements of the app you're creating.

Reverse proxy is a useful tool when you're designing a solution to deliver web-based applications over the internet. Reverse proxy servers represent your website whenever you interact on the internet.

Forward proxy is a great tool to display clients for personal use, or in a working environment. The forward proxy displays the information of the client whenever you interact on the internet.

Separating by use case instead of using the same naming conventions will ensure that you aren't confused.

Conclusion

This article will explain the definition of a proxy with the two main types which are the reverse proxy and the forward proxy. Practical examples of usage and a discussion of most useful characteristics were used to define the distinction between forward and reverse proxy. If you're interested in exploring the possibilities of proxy servers, you must read our guide on how to configure Nginx as a reverse proxy for Apache on one Ubuntu 20.04 server.

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