8 Ways Proxy Sites Will Help You Get More Business > 자유게시판

"proxy" is a term used to describe a server "proxy" refers to the fact that a proxy or proxy server is software that acts acting as a mediator between client and server on the internet. Without a proxy, the client could make a request for a resource directly to the server and it would deliver the requested resource directly back towards the customer. It's not hard to comprehend and implement, the addition of proxies offers advantages through improved performance, privacy, security, and much more. As a layer of pass-through, proxy servers serve as a security barrier on the internet between servers and clients.




The general collection of server hardware along with installed proxy software is also often called proxy servers. This article will focus on proxy servers which are generally described in terms of software and the ones used to complement web servers. The article will offer details of two types that are available, which include forward proxy and reverse proxy. forward proxy and reverse proxy. reverse proxy. Each type has its own specific usage, which can be confusing due to the overlapping terminology.




This article will give you an idea of the nature of proxies and their subtypes are and also their value in the typical settings. If you go through this article, you will be able to identify scenarios in which a reliable proxy could be beneficial, and determine the most suitable choice between forward and reverse proxy for any situation.



Understanding Forward Proxies



Also forward proxy also called an open proxy is an agent for the user trying to make requests online to a source server. In this scenario, every attempt to send requests made by the client will rather be sent through the forward proxy. In this scenario the forward proxy acting in the client's stead, will look into the request. At first it will determine if clients are authorized send requests to this particular forward proxy. It will then either refuse requests or redirect it to its source server. The client is not able to have an internet connection directly and is only able to access what forward proxy allows for it to join.




The primary reason for people to utilize forward proxies is to provide more privacy or security on the internet. A forward proxy uses the internet on behalf of an individual client and in this way it can use an IP address that is distinct from the IP address of the user.




Based on the way it's configured the forward proxy may offer a range of capabilities, including the capability of:




Beware of ads-trackers.


Circumvent surveillance.


You can determine restrictions based on where you live.




Forward proxies are also utilized in systems that provide central security and access granted on a permission basis, like at work. When all internet traffic goes through an open forward proxy layer, admins may allow only a handful of clients online access, which is filtered by an common firewall. Instead of maintaining firewalls for clients, that could be utilized by multiple computers that have different configurations, users the firewall can be added to this forward proxy layer.




Keep in mind the fact that forward proxy servers have to be manually configured before they are able to be used and reverse proxies can be disregarded by clients. Based on whether or not the IP address of the client is transmitted to the origin server through 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 offers forward proxy capabilities.


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


Squid is an open source forward proxy using the HTTP protocol. Squid doesn't have the full Web server platform. We recommend you read our article on the best method of installing Squid proxy to connect private networks on Ubuntu 20.04.


Dante forward proxy which runs using the SOCKS protocol instead of HTTP this makes it better suited for scenarios such as peer-to-peer connections. You could also 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 handles requests made by clients on its behalf. The web server could function as a single server, or multiple servers. Additionally, it can comprise an application server, like Gunicorn. In any of these situations, the request may come from a user on the internet in general. The request will typically be directly sent to the server on the internet that has the information the client wants. In contrast, a reverse proxy is a intermediary, isolating the web server from direct contact with the open internet.




From the point of view of the user, working via reverse proxy doesn't differ from the interaction with an internet server direct. It's the same thing but the client doesn't see the distinction. The client asks for a resource and then receives it without further configuration required for the customer.




Reverse proxy providers provide features like:




Security centralized on webservers.


The routing of traffic inbound is by rules you can set up.


Additional functionality for caching.




Central security is a benefit of both forward and reverse proxies, reverse proxies provide this benefit to the layer on the webserver and not the client layer. Instead of focusing on maintaining firewalls on the server level which may include multiple servers that have different configurations, the majority of firewall security is focused at the reverse proxy layer. Furthermore, taking the burden of dealing with firewalls and communicating with requests by clients away from web servers enables the firewall to focus on providing resources.




If there are multiple servers operating in a reverse proxy the reverse proxy could also be in charge of directing which requests are directed to which servers. There could be multiple web servers running on the same server, each serving various kinds of resources or a mix of the two. These servers utilize an HTTP protocol to perform the role of an ordinary web server. They can also be equipped with other protocols for application servers like FastCGI. You can set up reverse proxy servers to direct clients to specific servers based on the requested resource or to follow certain rules regarding the amount of traffic.




Reverse proxies are also able to take advantage of their positioning ahead of web servers by using caching features. The large static files can be set up with caching policy to prevent the web server from being hit with every 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 handling compression of these assets.




The popular Nginx web server also functions as an effective reverse proxy service. Even though Apache is an alternative to reverse proxy, the Apache webserver also includes reverse proxy functions, which can be a second option for Apache and Nginx was initially designed for and focuses on reverse proxy capabilities.



Distinguishing Forward and Reverse Proxy Use Examples



Since "forward" and "reverse" are both associated with a sense of directionality, and false connections with "incoming" or "outgoing" traffic, the names could be confusing as both types of proxies can manage requests as well as respond. In addition, the most effective method of separating reverse and forward proxy services is to think about the requirements of the app that you're developing.




Reverse proxy is useful when you are creating an option to host web applications on the internet. They are your web servers in any interactions through the Internet.




A forward proxy is useful when used in front of customers for your own usage or even in a corporate setting. They act as a representative of your customers for any interaction on the internet.




The use case-based differentiation instead of focusing on the similar naming conventions will assist you in avoiding confusion.



Conclusion



This article explains what a "proxy" is and the two types that are the forward proxy and reverse proxy. Practical scenarios to use them as well as an examination of the advantageous characteristics were used to define between two kinds of proxies: forward and reverse. If you're interested exploring how to make proxies work, read our tutorial on how to configure Nginx as an HTTP server and reverse proxy to Apache on an Ubuntu 20.04 server.



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