The Do's and Don'ts Of Proxy Sites > Open

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A proxy, also known as a proxy is also known for its role as a proxy. is software that functions to act as an intermediary for client and server over the internet. Without the proxy, a customer would send a request for any resource directly to the server and servers would deliver direct to users who requested the resource. This is a simple method to grasp and use however, the addition of proxy servers may provide benefits such as more speed, privacy and security, among others. In addition to providing a layer of security proxy servers act as a security guard for the internet between servers and clients.




The general consensus is that the system of servers that are equipped with proxy software is often referred as proxy servers. But, this article will focus on proxies traditionally defined as software, and specifically in relation to web servers. We will present a summary of the two main kinds of proxy which are forward proxy and reverse proxy. reverse proxy. Each kind has a distinct use, which could be confusing due to the same name convention.




This article will provide you with an idea of the types of proxies, their subtypes, and what they can do for common setups. By reading this article you'll be able understand the situations when you may benefit from a proxy, and make the right option between reverse proxy and forward proxy in any given scenario.



Understanding Forward Proxies



Forward proxy also referred to as an open proxy serves as an agent for users who wish to send a request via the internet to a source server. In this instance, any request sent by the user will be handled by an forward proxy. A forward proxy that is in place of the client will review the request. It first will determine if the client is legally authorized to accept requests from this specific forward proxy. Then, it can either reject requests or send it back to source server. The client is not able to have directly access to internet; it will only be able to access the information that the forward proxy gives its access.




A very popular reasons for forward proxy is greater privacy or security on the internet. A forward proxy accesses the internet in lieu of a client's individual account, and in the process, it may use a different IP address, in contrast to the IP address that is used by the user.




Based on the way it's set up, and how it is configured, forward proxy may offer many features and allow you to:




Avoid tracking ads.


Circumvent surveillance.


Determine restrictions based on location.




Forward proxies can also be used in systems to offer central security and permission based access, like at a workplace. In the event that all internet traffic passes through an open forward proxy layer, administrators are able to restrict access to only certain clients to the internet. The web is filtered by an common firewall. Instead of having firewalls on the client layer, which could include multiple machines with different configurations and users, a firewall can be placed on the front proxy layer.




Be aware that forward proxies should be manually configured for use while reverse proxies could be disregarded by the client. Based on the kind of IP address the client's connection to the server that originated it via the forward proxy security and privacy can be made more transparent.




There are a myriad of options to take into consideration for forward proxy:




Apache is a well-known open-source web server which provides forward proxy capabilities.


Nginx is another popular open-source webserver, which comes with forward proxy capability.


Squid: An open source forward proxy that utilizes the HTTP protocol. This option doesn't include the whole web server. You can refer to our guide on the best method to install Squid proxy to enable private connections on Ubuntu 20.04.


Dante is a forward proxy which uses the SOCKS protocol instead of HTTP which makes it more appropriate for situations such as peer-to-peer traffic. You can also learn how to setup a Dante proxy for private connections in Ubuntu 20.04



Understanding Reverse Proxies



Reverse proxy acts as the web server, which handles the requests of customers on behalf of the server. It can be used as a one server, or multiple servers. It could also comprise an application server, such as Gunicorn. In any of these instances it is possible to send a request via the web in general. In the majority of cases the request will be sent directly to the web server with all the resources the client in need of. A reverse proxy serves as an intermediary and separates your website server from communicating with the internet's public.




From a consumer's point viewpoint from the perspective of a client, using reverse proxy is not any different than connecting directly to an internet server. It's basically the same, but clients aren't aware of the distinction. The client asks for the resource, and then gets it without any further configuration required on the part of the client.




Reverse proxies offer various features, including:




A centralized layer of security that protects the server.


Controlling traffic inbound using rules that you set up.


A new feature to cache is now available.




Although central security is an advantage of both reverse and forward proxy solutions, reverse proxy providers provide this feature only to only the server layer and only the layer that clients use. In lieu of the maintenance of firewalls on the server level which could include multiple servers and various configurations, the majority of firewall security could be concentrated on the reverse proxy layer. Additionally, removing the responsibility of dealing with firewalls and responding to requests from clients outside of web servers permits them to focus on only the requirements of their customers.




In the case of multiple servers being hosted through reverse proxy, the reverse proxy also manages the routing of requests to the server that is hosting them. Multiple servers may be serving the same resource, providing various kinds of resources, or a combination of the two. They may utilize the HTTP protocol as a standard web server, however they could also incorporate protocols for application servers like FastCGI. You can set up a reverse proxy to route clients to particular servers according to the requested service, or observe certain guidelines for traffic load.




Reverse proxies can also make use of their position before web servers by providing caching capabilities. Large static files can be set by caching rules to avoid getting to web servers for every time you request. There are solutions that offer an option to serve static content directly, without having to communicate with the webserver at all. In addition, reverse proxy is able to help compress these assets.




The well-known Nginx webserver is known as a well-known reverse proxy choice. While it is true that the Apache web server is able to use reverse proxy capabilities, it is an additional feature that is available to Apache However, Nginx was initially designed focus on the reverse proxy feature.



Distinguishing Forward Proxy from Reverse Proxy Use Examples



Because "forward" as well as "reverse" are associated with an impression of directionality and inaccurate comparisons to "incoming" or "outgoing" traffic. They can confuse because both types of proxies handle requests and response. A better approach to distinguish between forward and reverse proxy servers is to study the requirements of the app that you are building.




Reverse proxy is an important element in the creation of a solution to serve web-based applications via the internet. They serve as servers when you interact with the Internet.




Forward proxy is useful to display customers' information for your own use, or in a work environment. The forward proxy is a representation of the information of the customer whenever you interact on the internet.




A distinction based upon use cases instead of focusing on naming conventions that are similar will make it easier to avoid confusion.



Conclusion



This article clarified the meaning of a proxy. There are two kinds of proxy being the forward and the reverse proxy. Practical applications and an exploration of the beneficial attributes were utilized to distinguish forward proxies from reverse proxy. If you're interested in the use for proxy servers learn how you can configure Nginx as an internet service and reverse proxy in Apache in Ubuntu 20.04 Server. Ubuntu 20.04 Server.



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