10 Ways To Get Through To Your Proxy Sites

A proxy is also known as a proxy server is software that acts as a mediator between a client and server on the internet. Without the use of a proxy, an individual would send a request to something directly through a server, and the server would deliver the resource directly to the client. Though this approach is simple to understand and implement, the addition of proxies can offer advantages in terms enhanced performance security, privacy, and more. Apart from adding a layer of security proxy servers also act as a security safeguard for the internet, separating clients from servers.

The consensus is that the set of servers and the hardware that is used along with proxy software is also frequently known as proxy servers. But, this article will focus on proxies typically classified as software and within the web server context. We will provide a brief overview of the two main types, namely which are a forward proxy and a reverse proxy. Each type has its own use that can cause confusion due to a similar name convention.

This article will give you an understanding of nature of proxies and the subtypes of them and how they work in the normal configurations. By reading in this post, you'll learn to identify the scenarios that are the best to utilize a proxy and make the right choice between forward and reverse proxy in any circumstance.

Understanding Forward Proxies

In other words, a forward proxy sometimes called open proxy. In other words, an open proxy acts as a representative of a customer who wishes to make an internet-based request to an source server. In this case, every attempt to send requests from the client will instead be directed direct via the forward proxy. Forward proxy acting on instead of the user will look into the request. The first step is to determine if this client has the right to accept requests from this particular forward proxy. Then, it decides if it wants to deny a request and forward it to the original server. The client is not able to directly access the internet. It is only able to access the internet that forward proxy allows it access to.

The most common reason to use forward proxies is to gain greater privacy or security when surfing the internet. A forward proxy can be used to access the internet in place of a client, and in this manner it could employ a different IP address than the IP address originally used by the client.

Depending on how it's been set up in the past forward proxy servers may provide a range of choices and permit you to:

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  Do not be a victim of ad tracking.
  
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  Circumvent surveillance.
  
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  You can identify restrictions based upon your geographic place of residence.
  
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Forward proxies are also used in systems that provide central security and authorization based access, such as at work. If all internet traffic flows through an open forward proxy, administrators can limit access to specific clients on the internet that are filtered through a common firewall. Instead of having firewalls installed for the client layer that may comprise a range of computers with different user and environment the firewall could be put into the forward proxy layer.

Note that the forward proxy setting must be configured manually to use and reverse proxy settings can be ignored by clients. Depending on whether the IP address of a user is passed to the original server through the forward proxy privacy and anonymity can be granted or denied.

There are a variety of alternatives to think about for forward proxies:

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  Apache: A popular open-source webserver that includes forward proxy capabilities.
  
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  Nginx: Another well-known open-source webserver that has forward proxy capabilities.
  
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  Squid: A free forward proxy that makes use of an HTTP protocol. This doesn't offer an entire Web server service. Follow our step-by-step instructions to set up Squid proxy to allow private connections within Ubuntu 20.04.
  
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  Dante forward proxy, which uses the SOCKS protocol, instead of HTTP this makes it more suitable for situations like peer-topeer traffic. It is also possible to look at the procedure for installing the Dante proxy to connect privately in Ubuntu 20.04
  
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Understanding Reverse Proxies

A reverse proxy serves as a representation of a web server that handles the incoming requests of clients. The web server may include one server or several servers. It could also serve as an application server like Gunicorn. In either of these scenarios the request for an application comes from a user via the internet as a whole. In the majority of cases the request is directed directly to the web server with the information that the client is seeking. Reverse proxy, however, acts as an intermediary, securing Web server from any direct contact with the web's public.

From a consumer's point view that is a user's viewpoint, interfacing using a reverse proxy is no any different from using an internet server direct. It's the same, but the user is unable to discern the distinction. The client requests a resource and then receives it, with no additional configuration needed on the part of the client.

Reverse proxies offer features like:

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  Centrally secured to protect Web Server Layer.
  
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  Controlling traffic that is inbound, based on rules you can design.
  
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  The caching function was added to the application.
  
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While central security is a benefit of both forward and reverse proxy servers, reverse proxies offer this feature to only the server layer, it is not available to the client layer. Instead of managing firewalls at servers on the internet, which could contain multiple servers and different configurations, the bulk of the firewall security is targeted at reverse proxy layers. Also, the removal of the responsibility to interact with firewalls and also interacting with clients' requests outside of web servers allows them to concentrate on providing the requirements of their clients.

When there is a multitude of servers hosted using a reverse-proxy, the reverse proxy is responsible to direct which requests are routed at the server. There may be several web servers that provide the same content, providing different types of resource or a mixture of both. They can use the HTTP protocol similar to a standard web server however, they may also use additional protocols for applications servers, such as FastCGI. You can also configure reverse proxy to redirect clients to specific servers based on the requested resource or follow specific rules regarding traffic load.

Reverse proxies can also make use of their location ahead of web servers, by providing the ability to cache. The large static files can be configured by using caching rules in order to avoid from hitting web servers on every request. There are solutions that permit you to serve static assets directly without having to connect to the web server even once. Furthermore reverse proxy is able to handle compression of these assets.

The well-known Nginx web server is also used as a well-known reverse proxy solution. While Apache has a reverse proxy solution but the Apache web server is also equipped complete with the reverse proxy functionality that is an added characteristic of Apache while Nginx was originally designed to focus on its reverse proxy feature.

Distinguishing Forward Proxy from Reverse Proxy Use Examples

Since "forward" as well as "reverse" are associated with directionality, as well as false comparisons to "incoming" as well as "outgoing" traffic, the labels can be confusing since both types of proxy handle responses and requests. An alternative method to differentiate between forward and reverse proxy is to study the requirements of the application you're creating.

A reverse proxy can be helpful when building a solution to provide web-based applications over the internet. They act as your web server for when you use the web.

Forward proxy is useful when it is displayed before clients for personal use or within an office environment. They represent your customers whenever you use the internet.

The use of case-based differentiation instead of focusing on commonly used naming conventions can help in eliminating confusion.

Conclusion

The article clarified the meaning of a proxy, which includes two types that are forward and reverse proxy. Practical applications as well as a summary of beneficial characteristics were employed to identify between forward and reverse proxies. If you're interested in knowing more about the process of implementing proxies you can check out our guide on how to configure Nginx as an internet server and reverse proxy using Apache on the Ubuntu 20.04 server.

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