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"proxy" refers to a proxy server "proxy" is a reference to the fact that a proxy or proxy server. It is software that acts acting as a mediator between client and a server on the internet. Without a proxy, a client would make a request for a service direct to a server, and it would serve the resource directly to the user. It's not hard to understand and implement, the addition of proxies offers advantages that include improved efficiency, privacy, security as well as many other benefits. As a layer of pass-through, proxy servers are a way to secure the internet, separating servers and clients.




In general, the combination of hardware used by servers and proxy software installed is often described as proxy servers. But, this article will focus on proxy servers which are generally described as software, as well as those that are used in conjunction with web servers. The article will offer a description of the two major kinds, namely the forward proxy and reverse proxy. reverse proxy. Each kind has its own terminology that could be confusing due to the use of overlapping terms.




This article will provide you with an idea of the proxy types and their subtypes are, as well as their significance in normal settings. After reading this article, you will be able to identify scenarios where an effective proxy can be beneficial, and determine the most appropriate option between forward proxy and reverse proxy in any circumstance.



Understanding Forward Proxies



Also, a forward proxy sometimes known as open proxy open proxy is an agent for an individual user trying to make requests online to a source server. In this situation every attempt to send requests by the client is sent through the forward proxy. In this case the forward proxy acting in the client's stead will review the request. At first it will decide if it is allowed to make requests via this particular forward proxy. Then, it will either reject requests or redirect them to the source server. The client doesn't have a an internet connection directly It is only able to access what the forward proxy allows the client to access.




The primary reason for people for using forward proxy servers is more privacy or protection online. A forward proxy connects to the internet on behalf of an individual client, and during this manner it can use an IP address that is distinct from the original IP of the client.




Based on the way it's configured depending on the way it's set up, forward proxy could offer a range of functions as well as the capability to:




Beware of ad-tracker.


Circumvent surveillance.


You can identify restrictions based on where you live.




Forward proxies can also be employed in systems to offer central security as well as access granted on a permission basis, like in the workplace. When all internet traffic goes through an open forward proxy layer, administrators are able to allow only a handful of clients online access, which is filtered by an common firewall. Instead of maintaining firewalls for clients, that may be used by multiple computers that have different configurations, environments the firewall can be added to the forward proxy layer.




Be aware Forward proxy servers need to be manually setup before they can be used while reverse proxies could be not noticed by clients. Depending on whether your IP address has been transferred to the server that is being used by the forward proxy privacy and anonymity could be granted or hidden from view.




There are a myriad of options to take into consideration for forward proxies.




Apache The Apache is a popular open-source web server, that provides forward proxy features.


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


Squid is an open source forward proxy utilizing the HTTP protocol. It doesn't provide the full web server system. Check out our guide on the most efficient method to install Squid proxy to connect private networks in Ubuntu 20.04.


Dante forward proxy, which uses on the SOCKS protocol instead of HTTP this makes it better to handle situations like peer-to-peer communication. It is also possible to look into how to configure Dante proxy to allow connection to private networks in Ubuntu 20.04



Understanding Reverse Proxies



Reverse proxy acts to act as an agent of a web server and takes care of incoming requests from clients on behalf of the server. The web server could function as a one server or a number of servers. It can also comprise an application server, such as Gunicorn. In either of these scenarios the request may come from a user on the internet. Typically, the request will be sent directly to the server on the internet which holds the information that the client wants. Contrarily, a reverse proxy acts as an intermediary, isolating the server from direct communication with the open internet.




From the point of view of the client, interfacing with reverse proxy isn't different than interacting via direct connection to an internet server. It's the same thing but clients aren't able to tell the distinction. The client asks for an item and receives it without further configuration required from the user.




Reverse proxy providers provide features like:




Security centralized for web servers.


The direction of traffic coming in is according to rules that you can set up.


Additional features to cache data.




Although central security is an advantage of both reverse and forward proxies, reverse proxies provide this feature only to the layer that is on the webserver rather than the client layer. In lieu of maintaining firewalls at the server level which may include multiple servers with different configurations, the majority of firewall security can be focused at the reverse proxy layer. In addition, removing the burden of dealing with firewalls and communicating with requests from clients off web servers allows the firewall to focus on supplying services.




In the case of multiple servers operating through a reverse proxy, the reverse proxy can be also responsible for directing what requests go towards which servers. There could be multiple web servers operating from the same host, serving various kinds of resources or a combination of the two. These servers utilize an HTTP protocol to serve as an ordinary web server. However, they could also be equipped with other protocols for application servers like FastCGI. It is possible to set up reverse proxy servers to direct the clients to specific servers in accordance with the resource requested or to follow specific rules for the traffic load.




Reverse proxies also have the ability to take advantage of their position ahead of web servers by using caching functions. Large static assets can be configured with caching policy to prevent the web server from being hit with every request, with certain solutions allowing you to serve static content directly without having to connect to the servers in any manner. Furthermore reverse proxy is capable of handling compression of these assets.




The popular Nginx web server can also function as an effective reverse proxy service. While Apache is also a reverse proxy service however, this Apache webserver also comes with reverse proxy functions, which can be a second option for Apache and Nginx was originally designed to and specifically focuses on reverse proxy capabilities.



Differentiating Forward Proxy and Reverse Proxy Use Examples



Since "forward" and "reverse" are both associated with a sense of directionality, and false connections with "incoming" and "outgoing" traffic the names could be confusing because both types of proxies are able to handle requests as well as respond. In addition, the most effective method to differentiate between the reverse as well as forward proxy services is to consider the requirements of the app you're creating.




A reverse proxy could be useful when you are creating an application that can serve web-based applications via the internet. They act as your web server in all interactions on the Internet.




A forward proxy is useful when presented to customers for your personal use or even in a business setting. They represent your clients for any interaction on the internet.




A case-based distinction instead of focusing on similar naming conventions can assist you in avoiding confusion.



Conclusion



This article explains what a "proxy" is and the two types that are the reverse proxy and forward proxy. Practical scenarios for use and a look at beneficial features were used to distinguish different types of proxies: forward and reverse. If you're looking for ways to set up proxies, look up our guide on how to set up Nginx as reverse and web server proxy for Apache on one Ubuntu 20.04 Server.



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