For an office of twenty people I need a web proxy for their internet use. They will be doing chat, searching web sites, and downloading content from the internet. Can I get help on a web proxy server for the following things?... -sizing/capacity of the server hardware to procure, software to use (Squid?), and a link to a guide for web proxy design.
Also, is there any limitation on what chat they can use via a web proxy vs doing chat without a web proxy? In other words can all chat applications work thru the web proxy?