nanog mailing list archives

Re: Netflix VPN detection - actual engineer needed


From: Baldur Norddahl <baldur.norddahl () gmail com>
Date: Wed, 8 Jun 2016 17:13:04 +0200



On 2016-06-08 07:27, Mark Andrews wrote:
In message <20160608070525.06fd5995 () echo ms redpill-linpro com>, Tore Anderson writes:
* Davide Davini <diotonante () gmail com>

Blocking access to Netflix via the tunnel seems like an obvious
solution to me, for what it's worth.
And which set of prefixes is that?  How often do they change? etc.


A start would be blocking 2620:108:700f::/64 as discovered by a simple DNS lookup on netflix.com. I am not running a HE tunnel (I got native IPv6) and I am not blocked from accessing Netflix over IPv6 so can't really try it. I am curious however that none of the vocal HE tunnel users here appears to have tried even simple counter measures such as a simple firewall rule to drop traffic to that one /64 prefix.

It might be that more needs to be blocked, but in that case it will be trivial to find the required prefixes by launching Wireshark and observe the IPv6 traffic generated when accessing netflix.com. Maybe someone could do that and post the results, as it is apparent that many people are in need of a solution.

Regards,

Baldur


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