What is a proxy server?

Scared when you encounter a proxy server in your network. That prevents you from entering a website or opening some files in the internet. So what really is this proxy server and why is it necessary.

Well, in an organisation that is using internet. A proxy server might have been set up. This server acts as an intermediary between a user’s computer and the internet. When this type of server is set up, the organisation can control the use of internet and opening of some sites. It is actually preferred if the organisation wants to keep things private. And privacy should be maintained in an organisation.

After setting a proxy server you can ban malicious websites from being openned accidently or intensionally by the user. An advantage of a proxy server is that its cache can serve all users. If one or more Internet sites are frequently requested, these are likely to be in the proxy’s cache, which will improve user response time. In fact, there are special servers called cache servers. A proxy can also do logging.

The functions of proxy, firewall, and caching can be in separate server programs or combined in a single package. Different server programs can be in different computers. For example, a proxy server may in the same machine with a firewall server or it may be on a separate server and forward requests through the firewall.