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

It is proxy is proxy is also known as a proxy server is software that acts acting as an intermediary between a client and server over the internet. Without proxy, a user would make a request the resource directly to the server and it would then serve the requested resource directly to the user. Although this method is easy to grasp and implement, adding proxies offers advantages such as more performance, privacy, security, and many more. As an additional layer for moving through, a proxy serves as a gatekeeper for the internet between clients and servers.




There is a general consensus it is the case that the mix of servers hardware with installed proxy software is frequently referred too as proxy servers. This article we'll concentrate on proxies that are typically described in terms of software as well as those that are used together to web server. This article will give an in-depth description of two types of proxies: that is one that is a forward proxy and reverse proxy. reverse proxy. Each is unique in its use and is often misunderstood due to the similar namesake convention.




This article will give you an understanding of the different types of proxy and subtypes they have, and what ways in which they can be beneficial for common setups. Through this article, you'll be able to determine the situations in which a proxy is beneficial, and decide on the most appropriate forward proxy or reverse proxy for a particular scenario.



Understanding Forward Proxies



The forward proxy, also known by the name of open proxy. An open proxy is a representative of a client who is trying to route an internet request to an origin server. In this scenario, it's the situation that all requests coming from the client will rather be directed via through the forward proxy. In this case, the forward proxy instead of the client will examine the request. It will first will decide whether the client is permitted to forward requests through this particular forward proxy. Then, it decides to reject this request and transfer it over to the origin server. It isn't able to direct connection to the internet. It can only access what forward proxy permits it access to.




The most common use for forward proxy is to achieve more privacy or protection on the internet. A forward proxy uses the internet as an individual client. In this manner, it may use another IP address in opposition to the IP address that is used by the client.




Depending on how they were configured in the past forward proxy servers may provide a range of choices, allowing you to:




Avoid tracking ads.


Circumvent surveillance.


Find restrictions based on your location of residence.




Forward proxies can also be used in systems to provide central security and permission based access, like in the workplace. In the event that all internet traffic passes via an open forward proxy, an administrator can grant only a handful of users connection to internet, which is then filtered by a standard firewall. Instead of establishing firewalls on the layer of clients, which may include multiple machines that have different environments and users, the firewall could be installed at the layer that is responsible for forwarding proxy data.




Remember that forward proxies have to be set up manually for use, whereas reverse proxy can be ignored by clients. Based on the fact that the IP address of the client is sent to the origin server via the forward proxy, privacy and anonymity could be granted or made more transparent.




There are many possibilities to consider in the case of forward proxies:




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


Nginx A renowned open-source webserver with forward proxy functionality.


Squid is an open source forward proxy that uses it's HTTP protocol. It doesn't provide an entire web server. Read our article on the most efficient method to set up Squid proxy for secure connections on Ubuntu 20.04.


Dante forward proxy that makes use of the SOCKS protocol instead of HTTP, making it better suited for scenarios like peer-to-peer communication. It is also possible to know how to set up an Dante proxy to allow private connections in Ubuntu 20.04



Understanding Reverse Proxies



Reverse proxy acts as a representative of a web server which handles incoming requests by customers on its behalf. The web server could represent a single or several servers. Additionally, it could be an application server like Gunicorn. Any of the above scenarios, a request could come in from a client through the web at large. Most of the time, the request will be delivered directly to the server along with the data the user is looking for. Reverse proxy, however, acts as an intermediary, and blocks your server from interactions with the internet.




From a client's perspective from a user's point of view, using a reverse proxy is no different from communicating directly with your webserver directly. It's basically the same and the client can't discern the difference. Client requests resources, that is then followed by receiving it, without any additional configuration needed for the end user.




Reverse proxy proxies can provide features, like:




Secured centrally for Web Server Layer.


The sending of traffic according to rules that you can set up.


Additional functionality for caching.




While central security is an advantage of both forward and reverse proxy solutions, reverse proxy providers provide this benefit only to the server layer, and not to the layer that connects to the client. Instead of the maintenance of firewalls at the layer of web servers that may contain multiple servers with different configurations, the bulk of firewall security resides on the reverse proxy layer. Additionally, getting rid of the necessity of interacting with firewalls and responding to requests from clients who aren't connected to web servers allows the firewall to focus on meeting the needs of their clients.




If there are multiple servers behind a reverse proxy the reverse proxy is also in charge of how requests are routed to which server. Multiple web servers may be running within the same system, providing different kinds of resources or a mix of the two. These servers can use the HTTP protocol as a conventional web server. They can also use protocols for applications such as FastCGI. You can set up reverse proxy that directs customers to specific servers according to the type of resource they are looking for, or to follow certain rules to manage traffic load.




Reverse proxies can also benefit from their positioning ahead of web servers through the capacity of caching. Large static assets are able to be configured using caching rules to prevent having to connect to web servers with each request, with certain services offering the possibility to directly serve static resources without connecting with the server even once. Furthermore reverse proxy can be able to handle compression of these assets.




The well-known Nginx web server also functions as an acknowledged reverse proxy service. Although the Apache web server is also equipped with a reverse proxy function, it's a separate feature that is available for Apache however Nginx was initially developed for and focused on the reverse proxy function.



Distinguishing Forward and Reverse Proxy Utilizing Differentiation of Forward Proxy and Reverse Use



Because "forward" and "reverse" have connotations of directionality and false comparisons to "incoming" in addition to "outgoing" traffic. These labels can be confusing as both kinds of proxies can respond to requests as well as responses. An alternative method to differentiate between reverse and forward proxy services is to study the requirements of the application you're creating.




A reverse proxy can be helpful in the development of a system to deliver web-based applications on the internet. They serve as your servers when you interact with the internet.




Forward proxy can be helpful when you are by the client for your personal use or in the workplace. They can be used to represent the traffic of your clients when you are on the internet.




A distinction that is based on the use cases instead of focusing exclusively on similar naming conventions will help you avoid confusion.



Conclusion



This article provides the definition of a proxy with the two major types that are forward proxy and reverse proxy. Practical application scenarios and a look at useful features were used to distinguish between forward proxy and reverse proxies. If you're interested in learning more about the possibilities of proxies then check out our guide on how to configure Nginx as a reverse proxy and web server proxy for Apache on an Ubuntu 20.04 server.



If you loved this posting and you would like to acquire much more facts pertaining to Proxy Sites (developers.oxwall.com) kindly pay a visit to the internet site.