The Key To Successful Proxy Sites > 자유게시판

• 목록
• 답변
• 게시판 리스트 옵션
  • 수정
  • 삭제

A proxy, also known as a proxy is also known as a proxy server, is software that functions as mediator between a client and server over the internet. Without proxy, a user would make a request resources directly to a server, and it would deliver that resource to its user directly. While this process is simple to comprehend and implement using proxy servers, it could offer benefits in terms of improved performance as well as privacy, security and more. As an additional layer of security proxy functions as a security guard to the internet between servers and users.




In general, the combination of server hardware with installed proxy software is commonly referred to as proxy servers. In this article, we will focus on proxy servers which are usually classified as software and also when it comes to web servers. We will provide a description of the two primary types of proxy servers: the forward proxy as well as a reverse proxy. Each type has a different use case, often confused due to a similar the naming convention.




This article will give you an idea of the what proxy services and their subtypes are, and their importance in the common configurations. Through the article you'll be able to understand what circumstances in which an effective proxy is beneficial, and choose the correct alternative between reverse and forward proxy based on the situation.



Understanding Forward Proxies



A forward proxy, sometimes called an open proxy, also known as an open acts as an intermediary for clients who are trying to transmit a request over the internet to a source server. In this scenario, every attempt to send requests made by the user will be routed directly via forward-proxy. A forward proxy, acting in the client's stead, will review the request. The first step is to decide if the client's permitted be able to accept requests through this specific forward proxy. It will then reject any request, or send it to the server that originally received it. The client has no directly access to internet. It can access only the web pages that the forward proxy allows it access to.




The most frequent reasons for forward proxy is to increase privacy or security while using the internet. Forward proxy utilizes the internet as the client and in this process it can use an alternative IP address for the client's original IP address.




Based on how it was configured, based on how it is configured forward proxy can provide a range of features depending on how it is configured that allow users to:




Beware of ads that track you.


Circumvent surveillance.


You can determine restrictions based upon your geographical area.




Forward proxies are also utilized in systems that provide central security and access to users based on permissions, for instance at an office. The entire internet can be passed via an open forward proxy. administrators can restrict access to certain clients to the internet that is protected by a common firewall. Instead of having firewalls installed for the client layer which may include multiple computers with different configurations and users you can set up a firewall at the layer that forwards proxy traffic.




Be aware the forward proxy setting should be manually configured for use however reverse proxies will be disregarded by the client. Depending on whether an IP address belonging to a user is transmitted to the server where it came from by the forward proxy privacy and anonymity could be granted or kept secret.




There are a variety of options to consider for forward proxy options:




Apache is a well-known open source web server that provides forward proxy functions.


Nginx: Another popular open-source server used for web hosting that has forward proxy features.


Squid: An open-source forward proxy that uses an HTTP protocol. It's not the entire web server. Check out our tutorial on how to install Squid proxy to connect privately on Ubuntu 20.04.


Dante is a forward proxy that uses the SOCKS protocol instead of HTTP to make it more suited for cases like peer-to-peer connections. You might also want to know how to configure Dante proxy to allow private connections in Ubuntu 20.04



Understanding Reverse Proxies



A reverse proxy acts as the web server, which takes care of all requests received from customers on behalf of. The web server can represent a single, or a number of servers. It may additionally be an app server, such as Gunicorn. In any of these cases, the request for an application is received from a user via the internet. In most cases the request will be directed directly to the server, which will provide the information the user is seeking. A reverse proxy serves as an intermediary and isolates your server from interaction with the open internet.




From the perspective of the user's perspective reverse proxy is a process that reverse proxy is similar to connecting to a Web server through direct communication. It's the same thing however the client can't discern the difference. The client makes a request for the resource, which is then followed by the receipt without the need for any extra configuration required by the user.




Reverse proxies provide options like:




A centralized layer of security to guard the server.


The direction of traffic coming in is based upon rules that you can decide to define.


New caching functionality has been added.




Although centralized security is a benefit of both reverse and forward proxy, reverse proxy adds this function to the web server layer, but not to the client layer. instead of being focused on the maintenance of firewalls at the layer of web servers which can contain a variety of servers and various configurations, most of the firewall security is aimed at the reverse proxy layer. Additionally, removing the responsibility of interacting with firewalls and interacting with requests from clients far from web servers allows them to focus on serving the requirements of their customers.




In the event of multiple servers running through reverse proxy reverse proxy is responsible for directing what requests are routed to which servers. There may be several web servers offering the same content, each offering different kinds of services or a mixture of the two. They could be running the HTTP protocol that is the standard web server, but can contain other protocols for application servers like FastCGI. You can also set up a reverse proxy to direct users to a specific server based on the service requested or to comply with certain guidelines regarding the load of traffic.




Reverse proxies may also take advantage of their location over web servers, by providing the capability to store information. Massive static resources can be configured with caching policies to avoid hitting web servers on every request. Certain applications allow users to serve static content directly without contacting Web servers in any form. Furthermore, the reverse proxy can help compress these assets.




The well-known Nginx web server also functions as a well-known reverse proxy service. Although there is a similar feature that is available in Apache web server, it does include reverse proxy functions as an added feature that is available for Apache while Nginx was initially designed to and is specifically designed for reverse proxy functions.



Distinguishing Forward and Reverse Proxy Use Situations



Because "forward" in addition to "reverse" conveys the notion of directionality, as well as misleading comparisons to "incoming" and "outgoing" traffic The labels can be confusing because both kinds of proxy servers process requests and responses. The best method of separating between a the reverse and forward proxy types is to research the specifications of the application you're creating.




A reverse proxy could be helpful when building a solution for serving web applications via the internet. They are your servers when you interact with the internet.




Forward proxy can be useful when placed before customers for the purpose of your own use or even in a business environment. They represent your client traffic through any interaction via the internet.




The use case-based differentiation instead of focusing on common naming conventions can aid in avoidance of confusion.



Conclusion



This article clarified what aproxy is and the two primary types that are forward and the reverse proxy. Practical applications as well as a review of the benefits were used to identify forward proxies and reverse proxy. If you're interested to learn more about the implementation of proxy servers then you should check out our tutorial on how to configure Nginx as a reverse proxy and web server proxy for Apache on an Ubuntu 20.04 Server.



If you adored this article along with you wish to be given guidance about Proxy Sites (www.merchantcircle.com) generously pay a visit to our own page.