• 목록
• 글쓰기
• 게시판 리스트 옵션
  • 수정
  • 삭제

A proxy is also known as a proxy server software that acts to act as a mediator between the server and client over the internet. In the absence of proxies, a user could send a request to a source directly through a server and the server would then serve the resource directly back for the client. Although this method is easy to comprehend and implement, adding proxies offers benefits such as improved performance as well as privacy, security and many more. As an additional pass-through layer the proxy acts as a guardian for the internet between servers and clients.




Generally speaking, the mix of hardware for servers and installed proxy software is usually called proxy servers. This article will focus on proxies that are traditionally described as software and specifically in relation to web servers. This article will present an in-depth breakdown of two types: forward proxy and reverse proxy. reverse proxy. Each type has its own usage scenario, and is frequently confused due to the same terms.




This article will give you information about what proxy services and their subtypes, as well as how they work in a variety of configurations. After reading this article, you'll be able to recognize the situations in which using proxies can be advantageous and pick the best option for reverse or forward proxy for any particular scenario.



Understanding Forward Proxies



The forward proxy, sometimes referred to as the open proxy is a proxy for a user who wishes to make an internet-based request to the server which originated it. In this situation, the entire process of sending requests from the user will be transmitted via the forward proxy. A forward proxy, acting as a substitute for the client, will look at the request. Then, it will determine whether the client is authorized to send requests through this specific forward proxy. It then decides whether to deny any request or to forward it to the server that originated it. The client is not able to have direct access to the internet. It can access only the information that the forward proxy allows it access to.




A popular use for forward proxies is increased privacy or security when using the internet. Forward proxy is able to access the internet instead of a client, and by doing this it can make use of a different IP address than the IP address used by the client.




Depending on how it has been configured and how it's configured forward proxy could offer you a variety of features based on the configuration, which allows you to:




Don't be a victim of ad trackers.


Circumvent surveillance.


Recognize restrictions based on geographical location.




Forward proxies are also used for security systems that are centralised as well as permission-based access in workplaces. If all traffic on the internet passes through an open forward proxy an administrator is able to grant only a small number of clients access to the internet filtered through the firewall. Instead of creating firewalls for the client layer that could include a variety of computers with various environments and users A firewall can be positioned in this forward proxy layer.




It is essential to note that forward proxies must be manually configured to use, whereas reverse proxies can not be detected by the user. Based on the type of IP address of a user is transferred to the server that is originally through the forward proxy Privacy and anonymity can be granted or denied.




There are a variety of possibilities to think about when it comes to forward proxy services.




Apache An open source well-known web server, which offers forward proxy functions.


Nginx is another widely-used open-source web server with forward proxy capabilities.


Squid is a free forward proxy using the HTTP protocol. This doesn't offer the entire web server. You can read our article about the best method to set up Squid proxy for private connections on Ubuntu 20.04.


Dante is a forward proxy that uses the SOCKS protocol instead of HTTP and HTTP, which makes it more suitable for applications such as peer-to -peer traffic. You can also learn how to configure 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 the incoming requests of clients on behalf of. The web server may include one or more servers. Additionally, it can be an application-server like Gunicorn. In either of these scenarios the request will be made via the internet at large. In most cases the request will be transmitted directly to a web server with the resources that the user is seeking. A reverse proxy functions as an intermediary, isolating this webserver from direct communication via the open internet.




From the point of view of the user, the experience of interacting with reverse proxy is not different than connecting to an internet server directly. It's functionally the same however the client is unable to be able to discern the difference. The client makes a request for a resource and then receives it without further configuration needed from the client.




Reverse proxies can provide features such as:




Security centralized to web server.


The direction of traffic coming in according to rules you have set.


New caching functionality has been added.




While central security is an advantage of both forward and reverse proxy servers, reverse proxies provide this service only to that layer on the webserver and not clients. Instead of maintaining firewalls in webserver level which could contain multiple servers with different configurations, the majority of firewall security is targeted at the reverse proxy layer. In addition, getting rid of the responsibility of interacting with a firewall and connecting with requests from customers via web servers allows them to concentrate on the requirements of their clients.




In the case of multiple servers using reverse-proxies, the reverse proxy also handles the direction in which requests are directed to which servers. Multiple web servers could be operating within the same system, providing different kinds of resources, or a combination of both. They may use the HTTP protocol just like a conventional web server, however they could also be outfitted with protocols for application servers such as FastCGI. It is possible to set up a reverse proxy that directs visitors to specific server according to the service you request, or to specific rules pertaining to the traffic load.




Reverse proxies also gain by being placed on top of web servers, as they provide caching capabilities. Large static assets can be created using caching rules to prevent having to contact web servers for each request. Some solutions allowing you to directly serve static files without having to communicate with the webserver at all. In addition, the reverse proxy is able to handle the compression of these assets.




The well-known Nginx web server is also used as a well-known reverse proxy solution. While Apache is also an alternative to reverse proxy it is not the only one. Apache web server also has reverse proxy features however, it's a distinct feature to Apache in contrast to Nginx was initially designed for and focuses specifically on reverse proxy features.



Differentiating Forward Proxy and reverse Proxy Use The Case



Since "forward" or "reverse" are ascribed to an impression of directionality and false comparisons with "incoming" as well as "outgoing" traffic the labels can be confusing since the two types of proxies deal with both requests and replies. The best way to differentiate between forward and reverse proxy is to take into account the needs of the application you're creating.




Reverse proxy can be useful when building a solution to offer web-based applications on the internet. They serve as your web servers during any interaction on the internet.




Forward proxy are useful when they are displayed in front of users for personal use, or in the workplace. They are a representation of your client's activity every time you connect to the internet.




The practice of segregating by use case instead of just focusing on the most the most common naming conventions will make sure that you don't get confused.



Conclusion



This article will explain the significance of a proxy, focusing on the two primary types, namely the reverse proxy and forward proxy. Practical examples of how to use them as well as a review of the advantageous features were utilized to distinguish between reverse and forward proxy. If you're looking to know more about the possibilities of proxies, you should read our tutorial on how to set up Nginx as a web server and reverse proxy in Apache on an Ubuntu 20.04 server.



In the event you cherished this short article and you would want to obtain details regarding Proxy Sites (https://blogs.cornell.edu) i implore you to pay a visit to our site.