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On 15-12-11 at 20:03, thelma@×××××××××××.com wrote: |
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> Does anybody have an idea how to block facebook? |
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The only way to blacklist facebook would be to create a whitelist and |
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drop everything not on said whitelist. |
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If you block DNS, they can use a different DNS server. If you block IP |
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addresses they'll use a proxy/vpn. If you use deep packet inspection |
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they'll use TLS or a VPN or an SSH tunnel. |
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If you can control the systems so that they don't do any of the above, |
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it's possible but you've admitted that you can't (unless you can |
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control all the Virtualbox instances). |
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Simon Thelen |
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