Proxy server

A proxy server is a server that acts as an intermediary for requests from clients seeking resources on the internet or an external network. Think of it as a go-between who makes requests on behalf of the client, ensuring that anyone outside of your network does not know the details of the requesting host.

The flow of data is from internal to external and it has three main functions: URL filter, content filter, and web page caching:

Figure 8: Proxy server
  • URL filter: When a user goes to a website, they type the URL, for example Companies may not want their employees going to Facebook or Twitter during working hours, ...

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