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

The term "proxy" refers to the idea of a proxy frequently called a proxy server is software that functions as an intermediary between client and server via the internet. Without a proxy, a client could make a request for an online server, and the server will serve direct to the requester. While this approach is straightforward to comprehend and use, proxies can provide benefits such as increased performance, privacy and security, and so on. As a pass-through layer, the proxy functions as a guardian for the internet between clients and servers.




The general system of server hardware that is paired with the software for proxy installation is usually called proxy servers. This article will focus on proxy servers which are typically classified as software, and specifically in relation with web server. We will provide a brief overview of the two main types of proxies, which is the reverse proxy as well as a forward proxy and reverse proxy. reverse proxy. Each type has a different use case, and is often misunderstood due to the overlapping terms.




This article will give you an understanding of what proxies as well as their subtypes and ways in which they can be beneficial in a range of configurations. If you go through this article, you'll learn to identify the circumstances in which the use of proxies is advantageous, and determine the most suitable alternative between forward and reverse proxy for any particular situation.



Understanding Forward Proxies



A forward proxy, also referred to by the name of the open proxy serves as the representative of the client who is trying to send an internet request to a source server. In this case every request made by the user will instead be sent via the forward proxy. The forward proxy, in place of the user will review the request. Then, it will decide whether or not the client is able to transmit requests through this particular forward proxy. It will then decide whether to reject the request or send it back to its server that originated the request. The client is not able to establish a direct connection with the Internet. It can only connect to the internet that the forward proxy permits it to connect to.




The most common reason to utilize forward proxy servers is to gain greater security or privacy when surfing the internet. A forward proxy is able to access the internet instead of clients, and in this manner, it is using an alternative IP address to the original IP address of the client.




Depending on how it's setup, and based on the way it's configured forward proxy can provide a variety of functions and allow users to:




Beware of ad-tracker.


Circumvent surveillance.


You can identify limitations based on your geographic area.




Forward proxies can also be used for security systems that are centralized and access dependent on permissions, for instance at work. If all internet traffic is routed through an open forward proxy layer, an administrator can restrict access to only a select group of internet users that is then filtered through the common firewall. Instead of creating firewalls for the client layer that can be utilized by multiple computers with different settings and types of users, it is possible to have a firewall located at the front proxy layer.




Be aware that forward proxies must be manually configured for use before they can be used, while reverse proxy servers can be obfuscated by clients. Based on the fact that the IP address of the user is relayed to the server that originated it by the forward proxy, privacy and anonymity may be granted or denied.




There are a variety of alternatives to look into for forward proxies.




Apache An open-source, well-known web server with forward proxy capability.


Nginx: Another popular open-source webserver which comes with forward proxy functions.


Squid is a free forward proxy that uses an HTTP protocol. It's not included with the whole web server. Follow our steps on how to set up Squid proxy to allow private connections to Ubuntu 20.04.


Dante Forward proxy that utilizes the SOCKS protocol rather than HTTP which makes it more suitable for use instances such as peer-to-peer connections. You may also want to check out how to set up Dante proxy to allow private connections on Ubuntu 20.04



Understanding Reverse Proxies



A reverse proxy functions to act as a proxy for web server, which handles requests from customers on behalf of. This server can represent a single, or multiple servers. It could also be an application server like Gunicorn. In either case, a request would come via the internet in general. The request is typically sent directly to the server hosting the information that the client requires of. A reverse proxy is a intermediary that isolates Web servers from any direct interaction with the internet's public.




From the point of view of the client an individual's viewpoint the process of utilizing reverse proxy is the same from interacting with the server in its own way. It's exactly the same however the client can't see the distinction. Client requests the resource and then receives it, without additional configuration needed for the customer.




Reverse proxies provide features like:




The server for the web is secure centrally.


The direction of traffic coming in is based upon rules you set.


A new feature to cache has been added.




While central security is a benefit of both forward and reverse proxy servers. However, reverse proxies provide this feature to only the server layer, they do not offer this feature to clients. instead of maintaining firewalls on the server level that could include multiple servers with various configurations, the bulk of security for firewalls is concentrated in the reverse proxy layer. Additionally, removing the responsibility of communicating with firewalls and interacting to requests from clients away from web servers allows firewalls to focus on serving the needs of their customers.




In the event that there's multiple servers hosted by a reverse proxy, the reverse proxy is also accountable for the way requests are routed to the server that is hosting them. There could be multiple web servers offering the identical service, providing different kinds of resources, or a combination of the two. These servers may use an HTTP protocol to perform the role of a standard web server, however they can also use protocols for application servers like FastCGI. You can also set up reverse proxy settings to send users to specific servers based on the resource being requested or to abide by certain guidelines for traffic load.




Reverse proxies also gain from their placement prior to web servers by offering caching capabilities. Large static assets may be configured with caching rules in order to avoid hitting web servers each time you request. There are solutions that permit you to directly serve static assets, without connecting directly to web servers in any form. In addition, the reverse proxy is able to compress these assets.




The well-known Nginx web server also functions as a reliable reverse proxy option. Although Apache can also be a reverse proxy solution, the Apache web server is also outfitted with reverse proxy functionality that is an additional option that is accessible to Apache However, Nginx was designed originally to specifically focus on reverse proxy features.



The difference is between Forward Proxy and Reverse Proxy Use Situations



Since "forward" as well as "reverse" have connotations of directionality and misleading distinctions between "incoming" or "outgoing" traffic The labels can be confusing as both types of proxy servers handle the processing of requests and replies. A better approach to differentiate between reverse and forward proxy is to study the requirements of the program you're creating.




A reverse proxy can be helpful in the development of a solution to deliver web-based applications on the internet. They are your web servers whenever you use the internet.




Forward proxy is useful when used in front of customers for your personal use or in an office setting. They act as your client's proxy when you are on the internet.




The ability to differentiate by the use of case instead of solely focusing on common naming conventions can help you avoid confusion.



Conclusion



This article will explain the meaning of a proxy with two types: the forward proxy and reverse proxy. Examples of how to use it and a brief overview of beneficial characteristics were used to differentiate forward proxies and reverse proxies. If you're interested to learn more about proxy servers, you should look over our guide on how you can configure Nginx as a reverse proxy by using Apache on one Ubuntu 20.04 server.



If you want to read more about Proxy Sites (http://seoexpert1222.centerblog.net) stop by the web site.