• 목록
• 글쓰기
• 게시판 리스트 옵션
  • 수정
  • 삭제

"proxy" refers to a proxy server "proxy" is a reference to proxy servers. A proxy or proxy server is a software that sits acting as a mediator between server and client on the internet. Without the proxy, a user would send a request for any resource direct to a server, and it would serve the requested resource directly back to the user. It's not hard to understand and implement. using proxies can provide benefits in the form of increased security, performance, privacy as well as many other benefits. As a pass-through layer proxy services act as a gatekeeper on the internet between clients and servers.




It is generally accepted that the set of server hardware along with the software that is installed to make proxy connections is often referred to as proxy servers. This article will focus on proxy servers that are generally described in terms of software and those that are used together with web servers. The article will offer details of two types of proxy servers, specifically the forward proxy and reverse proxy. reverse proxy. Each type has its own usage that could be confusing due to the overlapping terminology.




This article will provide you with an idea of the nature of proxies and their subtypes are, as well as their significance in normal settings. After reading this article, you will be able recognize situations where a reliable proxy could be advantageous, and decide on the best option for you between forward and reverse proxy for any situation.



Understanding Forward Proxies



Also forward proxy, also referred to as or an open proxy is an agent of the user trying to send an online request to an server. In this situation every attempt to send requests by the user will be sent through an forward proxy. In this case the forward proxy, acting on behalf of the client, will look into the request. In the beginning it will determine if the client is authorized to make requests via this particular forward proxy. Then, it can either reject requests or redirect it to its origin server. The client doesn't have a direct access to the internet It has access only to what the forward proxy allows the client to access.




The most common reason for using forward proxy servers is more privacy or protection on the internet. Forward proxy accesses the internet for the individual client. And during this manner, it may make use of an IP address that is distinct from the IP of the user.




Based on the way it's set up the forward proxy may provide a variety of functions as well as the ability to:




Beware of ads-trackers.


Circumvent surveillance.


You will be able to identify any limitations based on your location.




Forward proxies also are employed in systems to offer central security and permission-based access, for example in the workplace. If all internet traffic flows through an open forward proxy layer, administrators are able to permit only a few clients connection to internet which is filtered by an common firewall. Instead of maintaining firewalls for this layer that may be utilized by multiple computers that have different configurations, users and environments, a firewall can be added to this forward proxy layer.




Keep in mind Forward proxy servers must be manually configured before they can be utilized while reverse proxies could be disregarded by clients. Based on the fact that the IP address of the client is transferred to the server that is being used by the forward proxy privacy and anonymity may be granted or hidden from view.




There are many options to take into consideration when it comes to forward proxy options.




Apache The Apache is a popular open-source web server, which provides forward proxy capabilities.


Nginx: Another popular open-source webserver that comes with forward proxy capabilities.


Squid is an open source forward proxy using the HTTP protocol. This doesn't offer the complete web-based server. Check out our article on the best method to install Squid proxy to connect private networks in Ubuntu 20.04.


Dante forward proxy, which uses on the SOCKS protocol instead of HTTP which makes it more suited for scenarios such as peer-to-peer traffic. You could also look into how to configure Dante proxy to allow connection to private networks in Ubuntu 20.04



Understanding Reverse Proxies



Reverse proxy acts in the capacity of an agent on a server that handles requests made by customers on its behalf. The web server could function as a single server or multiple servers. Additionally, it can contain an application server such as Gunicorn. In either case, the request may originate from a user on the internet in general. The request will typically be directed directly to the server on the internet that holds the data the client wants. In contrast, a reverse proxy is a intermediary, separating the web server from direct interaction with the open internet.




From the perspective of the client, interfacing via reverse proxy doesn't differ than interacting with an internet server direct. It's the same thing but clients aren't able to tell the distinction. The client asks for an item and receives it, with no extra configuration required from the user.




Reverse proxy providers provide features like:




Security centralized for web servers.


The routing of traffic inbound is by rules you can establish.


Additional functions for caching.




Although central security is an advantage of both reverse and forward proxy, reverse proxies add this benefit to the layer of the webserver, and not the client layer. Instead of focusing on maintaining firewalls at the server level which could comprise several servers with various configurations, the bulk of firewall security can be focused at the reverse proxy layer. Additionally, removing the burden of dealing with firewalls as well as communicating requests from clients off web servers allows firewalls to focus on supplying services.




In the event of multiple servers running behind a reverse proxy the reverse proxy could be also responsible for directing which requests go towards which servers. Multiple web servers could be operating within the same system, each serving different types of resources or a combination of the two. These servers utilize an HTTP protocol to perform the role of an ordinary web server. They can also be equipped with application server protocols such as FastCGI. It is possible to set up a reverse proxy to route clients to specific servers in accordance with the resource requested or to follow specific rules for the traffic load.




Reverse proxies can also be able to make use of their positioning before web servers through caching functions. Massive static resources can be configured using caching rules to avoid hitting web servers every request, with some solutions that allow you to serve static content directly without having to connect to a web server in any way. Furthermore, the reverse proxy can be capable of handling compression of these assets.




The well-known Nginx web server can also function as a powerful reverse proxy solution. Even though Apache is also a reverse proxy solution and the Apache website server additionally includes reverse proxy capabilities, and is a different option to Apache while Nginx was initially designed for and focuses on reverse proxy capabilities.



Differentiating Forward Proxy from Reverse Proxy Use Cases



Since "forward" and "reverse" are both associated with a sense of directionality, and false comparisons to "incoming" as well as "outgoing" traffic, the names could be confusing because both types of proxies can handle requests as well as respond. Better yet, the best method to differentiate between the reverse as well as forward proxy services is to think about the needs of the application you're creating.




A reverse proxy can be helpful when you are developing a solution to serve web-based applications via the internet. They act as your web server in any interactions through the Internet.




A forward proxy is helpful when used in front of customers for your own usage or even in a professional setting. They are your client's representative for any interaction on the internet.




The use case-based differentiation instead of focusing solely on similar naming conventions will assist you in avoiding confusion.



Conclusion



This article will explain what a "proxy" is, with two major types of proxies being the forward proxy and reverse proxy. Practical scenarios for use as well as an examination of the advantageous features were used to distinguish the two types of proxy both reverse and forward. If you're interested in learning how to implement proxies you can look up our guide on how to configure Nginx as a web server and reverse proxy to Apache on an Ubuntu 20.04 Server.



For more regarding Proxy Sites (sites.google.com) look into the web site.