• 목록
• 답변
• 글쓰기
• 게시판 리스트 옵션
  • 수정
  • 삭제

A proxy, also known as a proxy is also known for its role as a proxy, is software that functions in the role of intermediaries between a client and server on the internet. Without the proxy, a customer could send a request for every resource straight to server, and servers would serve the requested resource directly to the user. Although this method is easy to grasp and use however, the addition of proxy servers can offer advantages like increased performance, privacy and security, among others. In addition to providing a layer of protection, proxies act as a guardian for the internet between servers and clients.




There is a general consensus that the system of server hardware coupled with installed proxy software is also often referred as proxy servers. This article will focus on proxy servers that are typically categorized as software, and specifically with respect with web server. We will give a synopsis of the two major types of proxy: a forward proxy and reverse proxy. reverse proxy. Each kind has a distinct use, and can be confusing because of the identical name convention.




This article will provide you with an idea of types of proxies, their subtypes, and their value in common configurations. After reading this article you'll be able know the scenarios where you can benefit by a proxy and make the right choice between reverse proxy and forward proxy in any given situation.



Understanding Forward Proxies



Forward proxy, also known as open proxy, sometimes referred to as open proxy is a proxy for users who wish to send a request via the internet to an source server. In this scenario, every request made by the user will be sent through this forward proxy. A forward proxy in the place of the client will review the request. It first decides if the client is allowed to accept requests via this particular forward proxy. Then, it will either deny requests or send it back to server that originated it. The client will not be able to have direct access to the internet; it will only be able to access the information that the forward proxy allows it access to.




A very popular reasons for forward proxy is greater security or privacy on the internet. A forward proxy is able to access the internet in lieu of a specific client and during that process it may use a different IP address in comparison to the IP address of the client.




Depending on how it's set up, and how it's configured forward proxy can provide a range of features and allow you to:




Do not click on ads that track you.


Circumvent surveillance.


Establish restrictions based upon your location.




Forward proxies are also employed in systems to provide central security as well as permission-based access to the internet, for instance at a workplace. If all internet traffic passes through an open forward proxy layer, administrator can allow only specific clients access to the internet, which is blocked by a common firewall. Instead of keeping firewalls on the client layer which may involve many machines with varying user configurations, firewalls may be placed on an intermediary layer.




Keep in mind that forward proxy servers must be manually set up to use while reverse proxies could be ignored from the clients. Based on the type of IP address of a client is sent to the server which originated it by the forward proxy privacy and security can be made transparent.




There are a variety of choices to be considered when deciding on forward proxy options:




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


Nginx is another well-known open-source webserver that includes forward proxy functionality.


Squid: An open source forward proxy that utilizes an HTTP protocol. It does not contain the entire web server. It is possible to refer to our article about how to set up Squid proxy to allow private connections in Ubuntu 20.04.


Dante is an forward proxy that utilizes the SOCKS protocol instead of HTTP which allows it to be more appropriate for situations such as peer-to-peer traffic. You can also check out how to setup the Dante proxy for private connections in Ubuntu 20.04



Understanding Reverse Proxies



Reverse proxy is a web server, which takes care of requests from customers on behalf of the server. The server could function as a one server, or as a series of servers. In addition, it could include an application servers, like Gunicorn. In all of these scenarios the request will be made via the web at large. In the majority of cases the request will be sent directly to the web server, along with the resources the client in need of. A reverse proxy serves as an intermediary, segregating your server from communications with the internet's public.




From a consumer's point of view from a client's perspective, using reverse proxy is not any different than connecting to an internet server direct. It's functionally the same but the client can't discern the difference. The client makes a request for the resource, and it receives it without any further configuration required by the client.




Reverse proxy providers offer options like:




A centralized layer of security to protect the server.


The direction of traffic that is using rules that you set up.


A new feature for caching has been added.




Central security is a benefit of both forward and reverse proxy service, reverse proxies provide this feature only to only the server layer, only the layer that clients use. Instead of focusing on the maintenance of firewalls on the server level that could contain multiple servers and different configurations, the bulk of firewall security can be concentrated on the reverse proxy layer. Additionally, removing the burden of interacting with firewalls as well as interacting with requests from clients outside of web servers lets them concentrate solely on delivering the requirements of their customers.




In the case of multiple servers being hosted through reverse proxy the reverse proxy manages the routing of requests to the server that is hosting them. There could be multiple web servers operating on the same server, serving different kinds of resources or a mixture of the two. They may use the HTTP protocol for functioning as a normal web server, however they may also include protocols for application servers like FastCGI. You can create a reverse proxy to route clients to specific servers according to the requested service, or adhere to specific rules regarding traffic load.




Reverse proxies also can make use of their position prior to web servers, by providing the ability to cache. Large static assets can be set using caching rules to prevent from reaching web servers with each time a request is made. There are solutions that offer an option to serve static content directly without having to connect with a webserver. Furthermore, reverse proxy can help compress these assets.




The renowned Nginx webserver is known as a wildly popular reverse proxy option. It is true that Apache web server does have reverse proxy capabilities, Apache web server has a reverse proxy capabilities as an added feature for Apache but Nginx was initially designed focus on reverse proxy functionality.



Distinguishing Forward Proxy from Reverse Proxy Use Examples



Because "forward" as well as "reverse" are associated with the perception of directionality, they can lead to misleading comparisons with "incoming" as well as "outgoing" traffic can confuse because both types of proxy servers process requests and response. The best way to differentiate between reverse and forward proxy servers would be to look at the requirements of the application that you are building.




Reverse proxy is a vital feature in the development of a solution to serve websites on the internet. They act as your servers when you interact with the Internet.




Forward proxy is useful to display customers' information for personal use or in a work environment. They represent the client's information when you connect to the internet.




A distinction based upon use cases instead of focusing on similar naming conventions will help avoid confusion.



Conclusion



This article clarified the definition of a proxy, with two types of them being the forward and the reverse proxy. Practical applications and an exploration of the beneficial attributes were utilized to determine forward proxies as well as reverse proxies. If you're interested in the role for proxy servers you can follow our tutorial on how you can configure Nginx as a web service and reverse proxy within Apache on Ubuntu 20.04 Server. Ubuntu 20.04 server.



If you enjoyed this post and you would like to receive more facts pertaining to Proxy Sites (https://forum.omz-software.com) kindly visit our own web site.