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

proxy, also known as proxy, also known as proxy or proxy server a server software that acts as a mediator between a client and server over the internet. Without an intermediary, a user could make a request for something direct to a server and servers would serve the resource directly back to the user. Although this approach is simple to grasp and implement, adding proxies provides benefits such as improved performance, privacy, security and many more. A proxy that is a pass-through layer acts as a gatekeeper of the internet between servers and clients.




In general it is the bundled set of server hardware with installed proxy software is often described as a proxy server. But, this article will focus on proxy servers which are usually referred to as software, and those used in conjunction with web servers. We will provide a brief overview of the two main types that are available, which is the forward proxy and reverse proxy. reverse proxy. Each type has its own unique usage scenario, which is often misunderstood because of the similar terminology.




This article will give you an idea of the different types of proxy services and the subtypes are as well being able to explain how they can be useful in typical configurations. Through this article, you can identify the situations where you can benefit from proxy services and identify the most suitable option in between forward and reverse proxy options in any given scenario.



Understanding Forward Proxies



The forward proxy sometimes called an open proxy is an agent for users who want to transmit a request over the internet to the server that made the request. In this case, it's the scenario that all requests sent by the client should be routed directly at the forward proxy. This forward proxy acting in place of the client will review the request. At the beginning, it will decide whether this client is able to handle requests via this particular forward proxy. It then decides whether to decide whether to reject requests or redirect them to the server that originated it. The client is not able to have direct connection to the internet It can only access the information that forward proxy grants the client access.




The most common reason for using forward proxy services is to gain greater security or privacy on the internet. Forward proxy allows you to browse the internet in place of clients, and in the process, it'll use an IP address that is different from the IP address that was originally utilized by the client.




Based on the way it has been configured in accordance with the way it was initially configured forward proxy may offer you a range of functions as well as the ability to:




Avoid tracking ads.


Circumvent surveillance.


You will be able to identify any restrictions based upon your geographic area.




Forward proxies are also employed in systems to provide central security and permission-based access, like at work. If all internet traffic flows via an open forward proxy, an administrator is able to allow access only to a few users to the internet, which is blocked by a standard firewall. Instead of having firewalls installed on the client layer that could comprise a variety of devices that are different in terms of user and environmental settings, a firewall may be placed on top of an front proxy layer.




It is important to remember that forward proxy servers have to be manually setup before they are able to be used for use in a reverse proxy, whereas forward proxy servers are not able to be seen by users. Depending on whether the IP address of the user is passed to the server that generated it by the forward proxy privacy and anonymity may be granted or kept in the dark.




There are a variety of possibilities to consider for forward proxies:




Apache An open-source, well-known web server that provides forward proxy capabilities.


Nginx is another well-known open-source server for hosting websites with forward proxy capability.


Squid: An open-source forward proxy that utilizes the HTTP protocol. It's not a complete web server service. Read our guide on how to configure Squid proxy for private connection on Ubuntu 20.04.


Dante Forward proxy that uses the SOCKS protocol instead of HTTP to ensure it is more suitable for scenarios such as peer-to-peer traffic. You may also want to examine how you can create a Dante proxy to allow private connections in Ubuntu 20.04



Understanding Reverse Proxies



A reverse proxy functions as an intermediary for a web server that handles incoming requests from clients on behalf. The web server can be one or more servers. Additionally, it can represent an application servers such as Gunicorn. In all of these scenarios, an application request comes by a user who is on the internet at large. In most cases the request will go directly to the website server hosting the information the user is looking for. However, a reverse proxy functions as an intermediary in order to shield Web server from any direct contact with the open internet.




From the point of view of the person's perspective, working using reverse proxy is anything different than working with a Web server in direct contact. It functions the same as the web server, and the client cannot discern the difference. The client can request the resource, and is then given it without any additional configuration required on the part of the client.




Reverse proxy proxies provide the following features:




Centrally secured for Web Server Layer.


The direction of traffic coming in by implementing rules that you establish.


The caching functionality was added to the application.




While centralized security is a benefit of both forward and reverse proxy, reverse proxies apply this feature to their web server layer, and not to the client layer. Instead of focusing on the maintenance of firewalls within the layer of web servers which may contain multiple servers with different configurations The majority of firewall security is focused at the reverse proxy layer. Additionally, the elimination of the responsibility of interfacing with firewalls and connecting with requests from customers off of web servers enables them to concentrate entirely on meeting the requirements of their clients.




If there are more than one servers running through reverse proxy the reverse proxy may also be accountable for the direction of which requests are routed through which server. There may be several web servers that are serving similar resources but each offering different types of resource or a mix of both. They can use an HTTP protocol to operate as a standard internet server, but they also incorporate protocols for applications such as FastCGI. There is the possibility to create reverse proxy servers redirecting visitors to a particular server according to the type of resource they are looking for, or to adhere to certain guidelines regarding traffic load.




Reverse proxies can also utilize their positioning before web servers, by providing the ability to cache. Large static assets can be capable of being configured with caching rules that prevent them from hitting web servers on every request. There are solutions that provide the possibility of providing static files without having to connect to the web server in any way. Additionally, the reverse proxy will manage the compressing these assets.




The renowned Nginx website server a very well-known reverse proxy choice. While Apache can also be regarded as a reverse proxy solution, the Apache web server is equipped with a reverse proxy features, it is an additional feature that is part of Apache However, Nginx was initially designed and primarily focused on the reverse proxy feature.



The distinction between Forward Proxy and Reverse Proxy Use Cases



Because "forward" as well as "reverse" are associated with directionality as well as inaccurate comparisons to "incoming" or "outgoing" traffic, they could be confusing since both types of proxy can manage requests and responses. The best method to distinguish between the forward and reverse proxies would be to examine the requirements of the application you're creating.




A reverse proxy could be beneficial when creating a solution to deliver web applications to the internet. They act as your servers when you are on the internet.




Forward proxy are useful when it is put before the client for private use, or in a workplace setting. They are your client's proxy whenever you interact on the internet.




Differentiating by case of use in lieu of looking at the same naming conventions will make sure that you do not get confused.



Conclusion



This article clarified what a proxy is with two kinds, specifically the forward proxy and reverse proxy. Practical applications and an examination of useful features were utilized to distinguish between forward and reverse proxies. If you're looking to learn more about the implementation of proxy servers, then you must go through our guide on how to set up Nginx as a web server and reverse proxy in Apache on an Ubuntu 20.04 server.



If you adored this post and you would like to obtain more information relating to Proxy Sites (vahuk.com) kindly visit our web-page.