4 Things You Have In Common With Proxy Sites > 자유게시판

A proxy is also referred to as proxy server software that acts in the role of a mediator a client and server over the internet. Without an intermediary the user would an attempt to request the resource directly to a server and the server would serve the resource directly back for the client. While this process is simple to comprehend and implement using proxies, it can provide benefits such as more speed, privacy and security, and many other. In addition to providing a layer of security they also act as a guardian for the internet between users and servers.




The bundled package of servers that have installed proxy software is commonly referred to by the name proxy servers. However, this article will concentrate on proxy servers that are traditionally referred to as software and when referring to web servers. This article will give a synopsis of the two primary types: one is a forward proxy and reverse proxy. reverse proxy. Each type has a different use, which could be confusing due to the identical name-based convention.




This article will equip you with the knowledge of what proxy services and their subtypes are, as well as the ways in which they can be beneficial for common setups. In this article, you'll able to discern the scenarios in which you can benefit by a proxy, and select the correct solution in between reverse and forward proxy, in any circumstance.



Understanding Forward Proxies



Forward proxy also known by the name of an open proxy, also known as an open, acts as the representative of a customer who wants to forward requests via the internet to the server that originated it. In this case, it's the situation that all requests received from the client will instead be sent straight into forward proxy. The forward proxy, acting in the place of the client, will take a look at the request. At first, it will decide whether the client is authorized to send requests through this specific forward proxy. Then, it will either reject requests or redirect them to the original server. The client will not be able to have directly access to internet. it is only able to access the information that the forward proxy permits its connection to.




One of the most popular reasons for using forward proxy is the desire for more privacy or security on the internet. Forward proxy has the ability to connect to the internet as a client, and in this way, it is using another IP address in comparison to your client's IP address.




Depending on how it has been set up depending on how it is configured forward proxy can provide a variety of functions in addition to the ability to:




Beware of ad-tracker.


Circumvent surveillance.


You can identify limitations based on your location.




Forward proxies can also be employed in systems that provide central security and access based upon permissions, like, in a workplace. If all internet traffic is routed via an open forward proxy a administrator may restrict access to certain users on the internet using the common firewall. Instead of establishing firewalls for the client layer, which can comprise multiple computers that have different configurations and user A firewall could be installed on the forward proxy layer.




Keep in mind that forward proxies must be manually configured to use the reverse proxy, while forward proxies may not be noticed by the user. Depending on the type of IP address of the client, when it is sent to the origin server through forward proxy privacy and anonymity could be granted or left transparent.




There are numerous options to consider for forward proxies:




Apache is a well-known open-source web server, which offers forward proxy features.


Nginx A renowned open-source web server with forward proxy capability.


Squid is an Open Source Forward Proxy using the HTTP protocol. It doesn't provide a complete Web server software. You can refer to our instructions on how to set up Squid proxy to allow private connections on Ubuntu 20.04.


Dante Forward Proxy that uses the SOCKS protocol instead of HTTP, making it more suitable for use cases like peer-to-peer connections. You can also learn how to set up Dante proxy to permit private connections on Ubuntu 20.04



Understanding Reverse Proxies



A reverse proxy serves acting as an intermediary for the server on the internet and takes care of the incoming requests of clients. Web servers can function as a single server, or multiple servers. Additionally, it can function as an app server, such as Gunicorn. In any of these scenarios the request will come from a user on the internet generally. In most cases, the request would be sent directly to the webserver that has all the information the user is seeking. However, a reverse proxy acts as an intermediary, protecting this webserver from direct interaction with the internet.




From the perspective of an individual or user's perspective, the process of using reverse proxy is not any different from working with the Web server itself. It's essentially the same thing, however the client is unable to discern the distinction. The client makes a request for a resource, which is then followed by the receipt of it, with no additional configuration required from the client.




Reverse proxy proxies can provide features, like:




Secured centrally for Web Server Layer.


Controlling traffic inbound using rules that you establish.


The caching feature was added to the application.




While central security is a benefit of both forward and reverse proxy services, reverse proxies give this benefit to Web server layers and not to the layer that clients use. Instead of maintaining firewalls on Web server layers, which can contain multiple servers with various configurations, most of firewall security is focused on the reverse proxy layer. Additionally, the absence to interface with a firewall and interfacing with requests from clients via web servers lets them focus on providing resources.




In the case of multiple servers operating behind a reverse proxy it also manages how requests are routed to which server. There are many web servers offering the identical service, but each one serving different types of resources, or a combination of both. These servers may use their HTTP protocol to function as a web server in the traditional sense, but can also include protocols for application servers like FastCGI. You can set up reverse proxy servers to direct clients to certain servers based on the requested resource, or to observe certain traffic load rules.




Reverse proxies also benefit from their placement in front of web servers by virtue of caching. The large static files can be configured with caching rules to ensure that they avoid having to communicate with web servers every time they need to make a request. There are solutions that offer the option of directly serving static assets, without needing to connect to a web server at all. Furthermore, reverse proxy could handle the compressing the assets.




The well-known Nginx web server can be described as an efficient reverse proxy option. While you can use Nginx, Apache web server also comes with reverse proxy capabilities as an additional function of Apache which is in contrast to Nginx was designed initially for and is focused on reverse proxy functionality.



The difference between Forward Proxy and Reverse Proxy Use. The difference between Forward Proxy and Reverse Proxy Use



Since "forward" as well as "reverse" have connotations of directionality, and false comparisons to "incoming" as well as "outgoing" traffic the labels can be confusing as both types of proxies are able to handle requests as well as responses. Instead, a better way to differentiate between forward and reverse proxy services is to look at the needs of the application that you are developing.




Reverse proxy can be useful when you are developing an application that can serve web applications on the internet. They serve as your web servers in any interactions on the web.




Forward proxy applications can be useful when they are employed in front of clients for personal use or in a workplace setting. They represent the client's web traffic in any interaction on the internet.




A case-based distinction instead of focusing on the identical naming conventions will aid in avoiding confusion.



Conclusion



In this article, we clarified the meaning of a proxy, with the two main types that are the forward and reverse proxy. Practical applications and a look at the beneficial traits were used in defining forward proxy and reverse proxy. If you're interested in knowing more about the implementation of proxy servers check out our guide on how to set up Nginx in a reverse proxy and internet-based server for Apache on an Ubuntu 20.04 Server.



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