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It is an proxy is often referred to as proxy server software which acts in the role of an intermediary the server and the client on the internet. Without a proxy, the client could send a request a source directly through a server and the server would then deliver the resource directly back to the client. Although this is a simple process to grasp and implement however the addition of proxy servers may provide advantages such as increased security, performance, privacy and more. As a further layer of pass-through, proxies act as a security layer to the internet between users and servers.




In general, the combination of server hardware and installed proxy software is also often described as proxy servers. This article we will focus on proxies typically considered to be software, specifically, in relation with web server. The article will provide a detailed discussion of the two main types of proxies: two types: a forward proxy and reverse proxy. reverse proxy. Each has its own usage scenario, but they can be confused because of a similar name convention.




This article will give you an understanding of what proxy services and their subtypes are, as well as how they are useful in the common configurations. In this article, you'll understand what scenarios in which you can benefit from a proxy, and select the most appropriate option between forward and reverse proxy in each situation.



Understanding Forward Proxies



Forward proxy sometimes known as open proxy, also known as open proxy is an agent used by a user who is trying to make a request through the internet to a source server. In this case any attempts to send requests made by the client will rather be directed to an forward proxy. In this case, this forward proxy, acting the place of the client will review the request. It is the first thing to determine if the client is permitted to submit requests via this particular forward proxy. It then decides whether to reject any request, or send it to the original server. The client has no directly connected to the web, it only has access to what the forward proxy grants it access to.




The primary reason for people to utilize forward proxy is for greater privacy or protection online. A forward proxy uses the internet as a client and during this process it assigns an alternative IP address in addition to the IP address of your client.




Depending on how they were established in the past forward proxy servers may offer a range of features, allowing you to:




Do not be a victim of ad tracking.


Circumvent surveillance.


Find restrictions based on your geolocation.




Forward proxies may also be utilized in systems to provide central security as well as permission-based access, such as in a workplace. If all internet traffic is routed via an open forward proxy, the administrators can allow only specific clients access to the internet through a common firewall. Instead of maintaining firewalls for the client layer that could involve many machines with varying configurations and users, a firewall could be installed at the forward proxy layer.




Remember to set forward proxy preferences have to be manually setup before they can be used for use, while reverse proxy servers are not able to be detected by users. Depending on the type of IP address a user is relayed to the server where it originated through the forward proxy, privacy and anonymity may be granted, or left unnoticed.




There are a myriad of options to look into for forward-looking proxy services:




Apache The Apache is a well-known open-source web server that provides forward proxy functions.


Nginx is another well-known open-source server for hosting websites with forward proxy features.


Squid: An open-source forward proxy that uses the HTTP protocol. It's not a complete web server system. You can refer to our guide on how to create a Squid proxy for private connections in Ubuntu 20.04.


Dante forward proxy which runs the SOCKS protocol instead of HTTP which makes it more suited for scenarios such as peer-to-peer connections. It is also possible to look into the steps to install an Dante proxy to permit private connections on Ubuntu 20.04



Understanding Reverse Proxies



A reverse proxy functions in the role of an intermediary the web server, and takes care of incoming requests from clients for the benefit of. This server could function as a single server, or as a series of servers. Additionally, it can become an application-server like Gunicorn. In either case, a request would originate from a user on the internet as a whole. Typically, the request will be sent directly to the web server that holds all the information the user is wants. A reverse proxy functions as an intermediary that shields the webserver from direct interaction with the open internet.




From the perspective of the user's viewpoint from the perspective of a client, using reverse proxy isn't different from communicating with the server by itself. It is functionally identical, however the client cannot discern the difference. The client requests a resource, and gets it, without additional configuration required from the client.




Reverse proxy providers provide features like:




The web server is protected centrally.


Incoming traffic is directed based upon rules you can create.


The caching feature has been added to the app.




While centralized security is an advantage of both reverse and forward proxy systems, reverse proxy providers can provide this feature only to this web server layer, not the layer that clients use. instead of maintaining firewalls at Web server layers that may include many servers and different configurations, the majority of firewall security is concentrated on the reverse proxy layer. In addition, getting rid of the responsibility of interacting with firewalls as well as interfacing with clients' requests that are not on web servers permits the firewall to focus on providing resources.




If there are several servers that are operating as a reverse proxy and the reverse proxy handles how requests are routed through which server. A number of web servers could be connected to the same server, offering different types of resource or a combination of the two. These servers utilize the HTTP protocol like a traditional web server, but they could also incorporate applications server protocols like FastCGI. You can set up reverse proxy servers to send clients to specific servers based on the kind of resource they're looking for, or to observe certain guidelines regarding the load of traffic.




Reverse proxies may benefit from their position on top of web servers by virtue of caching. Massive static resources can be arranged using caching rules to prevent hitting web servers with each request. Certain options allow users to directly serve static assets, without connecting with the server at all. In addition, the reverse proxy can be able to compress these assets.




The popular Nginx web server also functions as a well-known reverse proxy solution. Although it is real that Apache webserver is equipped with a reverse proxy features but it's an additional feature that is available for Apache however Nginx was designed originally for and is focused on reverse proxy features.



Differentiating Forward and Reverse Proxy Use Differentiating Forward and Reverse Proxy Use



Since "forward" along with "reverse" have connotations of directionality and misleading distinctions between "incoming" as well as "outgoing" traffic These labels are prone to confusion because both types of proxies handle responses and requests. Better yet, the best method to differentiate between forward and reverse proxy is to analyze the requirements of the app you're creating.




Reverse proxy is an effective tool when you're designing a solution to deliver web-based applications via the internet. Reverse proxy servers represent your website every time you use the internet.




Forward proxy can be useful for displaying clients for personal use or in a working environment. They represent the client's information when you use the internet.




The practice of segregating by case of use instead of focusing on the similar name conventions will ensure you aren't confused.



Conclusion



This article describes what a proxy is and compares two types of proxy, namely the reverse proxy and the forward proxy. Practical examples of usage and a discussion of the most useful features were used to establish the distinction the difference between forward and reverse proxies. If you're looking to explore the possibilities of proxy servers, you must read our guide on how to set up Nginx as a reverse proxy to Apache on an Ubuntu 20.04 server.



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