What is Proxy means

In computer networks, a proxy server is a server, that could be a computer system or an application program that acts as a go-between for requests from clients seeking resources from other servers. In other word, proxy server called man in the midle between real server on internet and the client. Simple work from a proxy server, client connects to server, requesting some service, such as a file, connection, web page, or other resource, available from a different server that allocate on other network. The proxy server evaluates the request according to its filtering rules. For example, it may filter traffic by protocol, time access, or IP address. If the request is validated by the filter, the proxy provides the resource by connecting to the relevant server and requesting the service on behalf of the client. A proxy server may optionally alter the client's request or the server's response, and sometimes it may serve the request without contacting the specified server. In this case, it 'caches' responses from the remote server, and returns subsequent requests for the same content directly. With this use, our connection to internet will be more simple because we didn't need to contact the real server to have what we want. We can set our proxy server to update the data to synchronous with the real server.
A proxy server has two main purposes:

• To keep machines behind it anonymous. It's really help us to keep our privacy and network security.
  
• To speed up access to a resource (via caching). It is commonly used to cache web pages from a web server.

A proxy server that passes requests and replies unmodified is usually called a gateway or sometimes tunneling proxy. A proxy server can be placed in the user's local computer or at various points between the user and the destination servers or the Internet. A reverse proxy is a proxy used as a front-end to accelerate and cache in-demand resources (such as a web page).

What is VPS??

A Virtual Private Server (VPS) is a hosting environment that combines the benefits of both shared hosting and dedicated hosting. It does this by creating a virtual server that runs inside a hardware server via a specially designed partition.

Each Virtual Private Server partition runs its own operating system in a secure and private environment and cannot be accessed or interrupted by its neighbours. This system gives you the same level of root access as a dedicated server whilst sharing the cost of the hardware. With a VPS you are virtually running your own server but at a fraction of the cost.
The flexibility of a dedicated server

Users share system resources, such as the CPU and memory, but unlike shared hosting (a virtual host on a shared hardware server ) the file system is fully partitioned. This means that up-time is more consistent; while root access to the server provides the flexibility to add and change modules and to install your own software.
As cost effective as shared hosting

Partitioning a single hardware server into multiple servers is nothing new. In fact, mainframe computers have long been partitioned into multiples. In 1996, Japanese giant Verio started to migrate the technique into hosting as a highly cost-effective storage solution.
How much technical knowledge do I need?

All our VPS options include the Plesk control panel, which makes it easier to administer your websites and services.

However, because a VPS gives you root-level access, allowing you to install whatever software you like, you will need some technical knowledge and understanding of how servers work to run a VPS effectively.
Why call it VPS 2.0?

We've called our new VPS range VPS 2.0 because of our next generation improvements to both performance and hardware. Our servers are 9th generation Dell machines with embedded Intel® Virtualization (VT®) optimisation in the Intel® boards. They are designed by Dell specifically to ramp up VPS performance.

The inclusion of the very latest range of software and control panels for Windows and Linux is accompanied by price reductions across the range so we're increasing performance, features and value at exactly the same time.
Powerful partnerships working for you

We've partnered with SWsoft to offer you a choice between Ubuntu Linux and Microsoft Windows virtual private server systems, making us the first UK host to deliver Windows SQL Server 2005 VPS hosting using the latest Plesk 8 and Virtuozzo Power Panel technology.

All VPS 2.0 systems are hosted on Dell PowerEdge 2950 servers with quad-core Intel® Xeon® processors for maximum multi-tasking performance and 15,000 RPM SCSI RAID 10 drives for data speed and integrity.

As we're a certified Intel Server Centre of Excellence using a Tier 1 Network with 50,000 Mbit Connectivity, you can also trust we set the access, speed and safety benchmarks you need.

source