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A relative of mine has a small accounting office and he decided to block facebook in the network. Ive been looking for a solution for blocking the https site but I had to enter all ip adresses to access filter list, so maybe you know of a software I can install on every pc (3-4 computers)

pcs have windows xp installed and we are considering buying a new router and try to apply access control on https site of facebook, or maybe url filter, or installing a software

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I think OpenDNS is the best solution for you. You just need to change your DNS servers to their's and you can set up filtering easily. You can use their home version which is free or their business version.

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what happens when the client changes the dns of their network connection to google dns? – Uğur Gümüşhan Feb 23 '13 at 13:33
I thought you were providing internet access from your router. You set the DNS settings there. – Jasjeev Singh Feb 23 '13 at 15:38

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