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작성자 Shavonne Wine 작성일24-02-13 06:31 조회9회 댓글0건

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The word "proxy" is a reference to the concept of a proxy also referred to a proxy server which is a server application that serves as an intermediary between a client and server on the internet. Without proxy, a user could send a request for resources directly to a server, then the server could provide the requested resource directly at the requester's expense. Although this method is easy to comprehend and utilize, using proxies has benefits including improved performance as well as privacy, security and more. In addition to providing a pass-through layer, the proxy functions as a security guardian of the internet between servers and clients.




Generally speaking, the combined combination of hardware and software for servers with the installed proxy software is sometimes referred to as proxy servers. This article will concentrate on the types of proxies that are typically thought as software, and specifically in relation to servers on the internet. The article will offer details of the two main types of proxies, which are forward proxy and the other a reverse proxy. reverse proxy. Each type has a different application, and is often confused due to the similar terms.




This article will provide the information on what proxies are and the subtypes they are, as well as how they work in a variety of configurations. In this article, you'll learn to determine the circumstances in which a proxy is beneficial, and choose the correct solution between forward and reverse proxy for any situation.



Understanding Forward Proxies



Forward proxy also referred to an open proxy serves as an intermediary for a client trying to send a request over the internet to an source server. In this case, the entire attempt to send requests made by the user is instead sent via the forward proxy. This forward proxy acting on behalf that of the user, would look into the request. At the beginning, it will decide if this client is able to accept requests from this specific forward proxy. It will then reject requests or redirect it to the origin server. The client isn't able to have an internet connection directly. It can access only what the forward proxy allows the client to connect.




The most common reason for using forward proxy services is to obtain greater privacy or security on the internet. Forward proxy is able to access the internet as the client and it may use an alternative IP address that is different to the initial IP address of the client.




Based on how it's been configured in accordance with the way it was configured forward proxy can offer a range of features and permit you to:




Beware of tracking ads.


Circumvent surveillance.


Find limitations based on your location.




Forward proxies are also employed in systems of centralized security and permission-based access like at a workplace. If all internet traffic flows through a forward proxy open layer an administrator can grant access to only a few individuals to access the web, and this is blocked by a common firewall. Instead of creating security firewalls at the user layer that can be used by several computer systems with different configurations and settings, firewalls can be set up at this layer to forward proxy data.




It is essential to note that forward proxies need to be configured manually and reverse proxies may be ignored by the client. Depending on the type of the IP address that a user is transmitted to the server from where it originated by the forward proxy, anonymity and privacy can be granted or denied.




There are many options to consider forward proxy options:




Apache A well-known, open-source web server, that can provide forward proxy functions.


Nginx: Another well-known open source server for hosting websites with forward proxy capabilities.


Squid is an open source forward proxy based on the HTTP protocol. It's not the complete web server system. It is possible to refer to our step-by-step guide to install Squid proxy to permit private connections in Ubuntu 20.04.


Dante Forward Proxy which uses the SOCKS protocol instead of HTTP this is more suitable for use situations such as peer-topeer traffic. You might also want to look into how to setup an Dante proxy for private connections in Ubuntu 20.04



Understanding Reverse Proxies



A reverse proxy serves as an intermediary to a web server that handles incoming requests from customers on behalf of the server. The web server could function as a one server, or as a series of servers. It could also serve as an application server, such as Gunicorn. In any case, a request would come through the internet in general. In most cases the request would go directly to the web server, containing the information that the user is looking for. However, reverse proxy acts as an intermediary, protecting the server from direct communication via the web's public.




From the consumer's point perspective, the experience of working with reverse proxy isn't any different from working with the server by itself. It's exactly the same thing, however the client isn't able to discern the difference. Clients can make a request for the resource and it receive it, with no additional configuration needed from the client.




Reverse proxy providers provide services such as:




Security centralized for web servers.


Incoming traffic is directed based upon rules you set.


The caching functionality was added to the application.




While centralized security is an advantage of both reverse and forward proxy servers, reverse proxies offer this service for the Web server layer, but not the client layer. Instead of maintaining firewalls on Web server layers that could include several servers that have various configurations, the majority of firewall security can be concentrated at reverse proxy layers. In addition, getting rid of the hassle of dealing with firewalls as well as interacting with requests from clients outside of web servers permits them to focus on delivering the needs of their clients.




If there are multiple servers running in a reverse proxy, the reverse proxy also manages which requests go to which server. There could be multiple web servers providing the exact identical service, but each providing different kinds of resources, or a combination of both. These servers could be running the HTTP protocol, which is a standard web server. However, they could also be using application server protocols such as FastCGI. You can set up reverse proxy servers to redirect users to a specific server based on the service being requested, or to follow specific guidelines for traffic load.




Reverse proxies can also be able to benefit from their position ahead of web servers, giving them the ability to cache information. The large static files can be managed using caching rules, so that they avoid websites from getting hit with every request. Some solutions allowing you to upload static files directly, by not connecting with the website server. Additionally, the reverse proxy could handle the compression of these files.




The popular Nginx web server is also a reliable reverse proxy option. While you can use Nginx, the Apache web server as reverse proxy features, it is an additional option to Apache while Nginx was designed originally for and specifically designed for reverse proxy features.



Distinguishing Between Forward and Reverse Proxy The Case



Since "forward" or "reverse" have connotations of directionality, and false comparisons with "incoming" as well as "outgoing" traffic the labels could be confusing because both kinds of proxy are able to handle both requests and responses. Another method of separating between forward and reverse proxies is to examine the requirements of the app you're developing.




A reverse proxy can be useful when building an infrastructure to support web applications on the internet. They act as your web server for all interactions on the internet.




Forward proxy can be useful when it is placed in front of customers for your personal use or within a corporate environment. It is a way to protect the information of your client whenever you interact on the internet.




Differentiating by case of use instead of focusing solely on standard naming conventions can assist you in avoiding confusion.



Conclusion



The article clarified the significance of a proxy having two types: the forward proxy and the reverse proxy. Practical use cases along with an examination of useful features were used to define the two kinds of proxy that are reverse and forward. If you're looking to know more about the benefits of proxies then we recommend you read our tutorial on how to install Nginx for use as a web server and reverse proxy on Apache on an Ubuntu 20.04 server.



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