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"proxy" is a term used to describe a server "proxy" is a reference to proxy servers. A proxy or proxy server. A proxy server is a software that sits in the middle between server and client via the internet. Without a proxy, a client would make a request for a source directly to the server and it would deliver the requested resource directly back towards the customer. It is easy to understand and implement, the addition of proxies offers advantages in the form of increased efficiency, privacy, security, and much more. As a layer of pass-through, proxies are a way to secure the internet, separating servers and clients.




The general combination of server hardware along with installed proxy software is also commonly described as proxy servers. However, this article will focus on proxy servers which are typically described as software, as well as ones that work together with web servers. The article will offer details of the two major kinds, namely forward proxy and reverse proxy. forward proxy and reverse proxy. reverse proxy. Each type has its own usage, which can be confusing due to the use of overlapping terms.




This article will provide you with an idea of the nature of proxies and their subtypes and also their value in the typical configurations. If you go through this article, you'll be able to discern the scenarios in which a reliable proxy could be advantageous, and decide on the most appropriate option between reverse proxy and forward proxy for any situation.



Understanding Forward Proxies



Also, a forward proxy sometimes known as open proxy open proxy is an agent for a user who is trying to send an online request to an origin server. In this scenario, every request made by the client will rather be directed by this forward proxy. In this case, the forward proxy acting on behalf of the client, will look into the request. In the beginning it will decide if it is allowed to send requests via this particular forward proxy. It will then either refuse requests or redirect them to the source server. The client does not have direct connection to the internet It is only able to access what the forward proxy allows the client to access.




The most popular reason for using forward proxy servers is to provide more privacy or security on the internet. Forward proxy accesses the internet on behalf of an individual client, and when it does this it can make use of an IP address distinct from the IP of the user.




Depending on the method by which it's configured the forward proxy may perform a variety of functions as well as the capability to:




Beware of ad-tracker.


Circumvent surveillance.


You can determine restrictions based upon your location.




Forward proxies also are used in systems to provide central security as well as access based on permissions, such as, in a workplace. When all internet traffic goes through a common forward proxy layer, admins may permit only a few clients access to the internet which is filtered by an common firewall. Instead of establishing firewalls for clients, that may be used by multiple computer with various configurations and users A firewall could be put in this forward proxy layer.




Keep in mind that forward proxy servers must be manually configured before they are able to be used and reverse proxies can be not noticed by clients. Depending on whether your IP address is transferred to the server that is being used through the forward proxy, privacy and anonymity could be granted or hidden from view.




There are many options to take into consideration for forward proxies.




Apache The Apache is a well-known open-source web server that offers forward proxy capabilities.


Nginx: Another popular open-source webserver that comes with forward proxy capability.


Squid is an open-source forward proxy that uses the HTTP protocol. It doesn't provide the full Web server platform. You can check out our guide on the best way to install Squid proxy to connect private networks for Ubuntu 20.04. Ubuntu 20.04.


Dante forward proxy that runs the SOCKS protocol instead of HTTP this makes it better suitable for situations such as peer-to-peer communication. It is also possible to look into how to set up Dante proxy for private connections in Ubuntu 20.04



Understanding Reverse Proxies



Reverse proxy acts to act as an agent of a web server. It handles requests made by clients on its behalf. The web server could function as a single server, or a number of servers. It can also comprise an application server, like Gunicorn. In either case, the request might originate from a user on the internet in general. The request will typically be directed directly to the web server which holds the information that the user is seeking. In contrast, a reverse proxy is a intermediary, separating the web server from direct communication with the internet's open.




From the point of view of the user, working via reverse proxy doesn't differ from interacting directly with an internet server. It's exactly the same, but the client can't discern the distinction. The client asks for a resource and then receives it, without any additional configuration needed from the user.




Reverse proxy providers provide features like:




Security centralized on webservers.


The direction of traffic coming in is based upon rules that you can set up.


Additional features to cache data.




While central security is an advantage of both reverse and forward proxies, reverse proxies provide this benefit to the layer on the webserver and not the client layer. instead of maintaining firewalls at the server layer which may include multiple servers with different configurations, the majority of firewall security is concentrated on the reverse proxy layer. In addition, removing the burden of dealing with firewalls and coordinating requests from clients off web servers allows firewalls to focus on providing resources.




In the event of multiple servers operating through a reverse proxy the reverse proxy could also be responsible for directing what requests go towards which servers. Multiple web servers might be running from the same host, serving different kinds of services or a combination of the two. These servers use an HTTP protocol to serve as an ordinary web server. However, they could also be equipped with application server protocols like FastCGI. You can create reverse proxy that directs the clients towards specific servers based on the requested resource or to follow certain rules regarding the traffic load.




Reverse proxies also have the ability to take advantage of their positioning ahead of web servers by using caching capabilities. Massive static resources can be set up using caching rules to avoid hitting web servers with each request. Certain solutions that allow you to serve static content directly without having to connect to a web server in any way. In addition reverse proxy is capable of compressing these assets.




The well-known Nginx web server can also function as a powerful reverse proxy service. While Apache is also a reverse proxy solution, it is not the only one. Apache webserver also has reverse proxy functions, which can be a second option for Apache however Nginx was originally designed to and concentrates specifically on the reverse proxy features.



Differentiating Forward Proxy from Reverse Proxy Use Examples



Because "forward" as well as "reverse" are associated with an impression of directionality and false comparisons to "incoming" or "outgoing" traffic, the labels could be confusing, because both types of proxies can manage requests as well as responses. The best method to differentiate between both forward and reverse proxy services is to consider the requirements of the app you're creating.




A reverse proxy can be beneficial when you're developing an option to host web applications on the internet. They serve as your web servers in any interactions through the Internet.




Forward proxy can be useful when it is used before customers for your own usage or in a professional setting. They are your client's representative in any interactions on the internet.




The use case-based differentiation instead of focusing on the common naming conventions will help you in making sure that there is no confusion.



Conclusion



This article will explain what is a "proxy" is, with two major types of proxies being the forward proxy and reverse proxy. Practical scenarios for use and an exploration of useful features were used to distinguish different types of proxies both reverse and forward. If you're interested exploring how to make proxies work, look up our guide on how to configure Nginx as reverse and web server proxy to Apache on one Ubuntu 20.04 server.



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