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It is an proxy commonly known as proxy server software that acts as an intermediary between the client and server on the web. Without proxy, a user will send a request for resource directly to the server and it would deliver that resource to its user directly. It isn't difficult to understand and implement the use of proxy servers can offer advantages like improved performance, privacy, security, and so on. In addition to providing a layer of security, proxies are a way to secure the internet between clients and servers.




It is generally accepted that the entire set of hardware used by servers and the software to install proxy servers is often referred too by the name proxy servers. This article will concentrate on proxies commonly referred to as software, and also in relation to web servers. The article will provide details of the two main types of proxies, which include forward and reverse. forward proxy and reverse proxy. reverse proxy. Each has a distinct use scenario, which is often misunderstood because of the similar the namesake convention.




This article will give you an idea of the nature of proxies and subtypes are, as well as how they work in the typical setups. Through the article you'll know what situations that the use of proxies is advantageous, and choose the correct solution in between reverse and forward proxy, in each circumstance.



Understanding Forward Proxies



In another way a forward proxy, also called an open proxy is a representative of a customer who wishes to forward requests over on the web to an original server. In this scenario, all attempts to send requests by the client are instead transferred to the forward proxy. In this situation, the forward proxy instead that of the user will review the request. It is the first thing to determine if the client is authorized to accept requests from this particular forward proxy. It can then decide whether to deny the request or forward it to the original server. The client does not have direct access to the internet but it is able to connect to what the forward proxy allows the client to access.




The most popular reason to use forward proxies is to gain greater privacy or security online. A forward proxy utilizes the internet instead of a client, and in that process it can use an alternate IP address from that of the client's initial IP address.




Depending on how it's been setup, and how it's configured forward proxy could provide many features and also the capability to:




Do not be a victim of ad tracking.


Circumvent surveillance.


Find limitations based on the geographic place of residence.




Forward proxies are also used in systems that provide centralized security and access based on user permissions like in the workplace. If all traffic on the internet flows through an open forward proxy layer, an administrator could grant access only to a few users to the internet filtered through an ordinary firewall. Instead of having firewalls installed for the client layer which could include various devices with various settings, users and settings A firewall could be added to this forward proxy layer.




Note that forward proxy server need to be manually set up to use to be used, while reverse proxy servers are able to be disregarded by clients. Based on the fact that an IP address from the user is transferred to the server that originated it through the forward proxy, privacy and anonymity could be granted or made transparent.




There are a myriad of options to look into options for forward proxy options




Apache The Apache is a popular open-source webserver that provides forward proxy functionality.


Nginx: Another well-known open-source webserver with forward proxy capabilities.


Squid is a free forward proxy based on the HTTP protocol. Squid doesn't include the full web server. You can check out our guide on the best method to set up Squid proxy that allows private connections within Ubuntu 20.04.


Dante Forward proxy that makes use of the SOCKS protocol instead of HTTP, which makes it better suited for scenarios such as peer-to-peer traffic. You might also want to look into how to set up an Dante proxy for private connections on Ubuntu 20.04



Understanding Reverse Proxies



Reverse proxy serves as an agent for web servers, taking care of the incoming requests of customers on behalf. The web server may consist of a single server or a number of servers. Additionally, it can serve in the role of an application server, like Gunicorn. In both cases, the request can originate from a user on the internet at large. Normally, this request will be sent directly to the web server which has the resources the client requires. Instead, a reverse proxy works as an intermediary in order to protect your web server from interactions with the open internet.




From a client's perspective the experience of interacting with reverse proxy is not different from communicating directly with your webserver. It's functionally the same and the user cannot tell the distinction. Client requests resources and is then able to receive it without any additional configuration from the user.




Reverse proxy providers offer options like:




Security centralized for web servers.


Directing traffic according to rules you can set up.


New caching functionality has been added.




While central security can be a benefit for both reverse and forward proxy platforms, reverse proxy offers this service only to the server layer, and not to the layer that clients use. instead of the maintenance of firewalls for Web server layers, which may contain several servers with different configurations, the majority of firewall security may be focused on the reverse proxy layer. In addition, getting rid of the burden of interfacing with firewalls and communicating with clients' requests away from web servers permits them to focus solely on meeting the requirements of their customers.




In the case of multiple servers that are behind a reverse proxy, the reverse proxy is also accountable to control which requests are placed on which server. There could be multiple web servers that provide the same service, but serving different types of resources or a combination of both. They can use the HTTP protocol just like a standard web server, however they could also be outfitted with application server protocols like FastCGI. A reverse proxy to send clients to specific servers based on the type of resource they're searching for, or comply with specific rules regarding traffic volume.




Reverse proxies benefit from their position on top of web servers through the possibility of storing information. Massive static content can be configured using caching rules to prevent the web server from being hit with every request. Certain solutions allow you to serve static content directly, without having to connect to the web server in any way. Furthermore reverse proxy is capable of compressing these assets.




The well-known Nginx web server can be described as a reliable reverse proxy solution. While it's factual that Apache web server is also equipped with reverse-proxy capabilities feature, however it's an additional function of Apache however Nginx was initially designed to focus on the reverse proxy function.



Differentiating Forward Proxy from Proxy Use. and Reverse Proxy Utilization



Since "forward" in addition to "reverse" have connotations of directionality, they can be misleading when comparing "incoming" or "outgoing" traffic. The labels can be confusing because both types of proxy are able to handle requests as well as responses. A better approach to distinguish between reverse as well as forward proxies would be to study the requirements of the app that you're developing.




Reverse proxy is a crucial feature when designing a solution that allows web-based applications on the internet. They act as your servers when you interact using the internet.




Forward proxy can be useful when presented to people for personal use, or even in a business environment. They represent your clients when you are on the internet.




A case-based approach to differentiation rather than focusing exclusively on naming conventions that are similar can help avoid confusion.



Conclusion



The article clarified what a proxy was along with the two types of them: reverse and forward proxy. Practical application scenarios as well as an examination of useful features was utilized to differentiate between forward and reverse proxies. If you're looking to know more about the advantages of proxies, you can check out our guide on how to set up Nginx as an internet server and reverse proxy for Apache using an Ubuntu 20.04 server.



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