8 Jun
2015
8 Jun
'15
7:25 a.m.
On 8 Jun 2015, at 17:57, Ramy Hashish wrote:
a BGP session has to be established over a GRE tunnel over the internet between the ISP/NSP/DC and the cloud scrubbing center,
This is incorrect. In most cloud overlay DDoS mitigation scenarios (e.g., end-customer obtains service from an MSSP which isn't providing them with transit), a) there is no BGP relationship whatsoever between the end-customer and the MSSP, and b) the GRE tunnel is used strictly for re-injection of clean traffic (i.e., post-mitigation) to the end-customer. In some scenarios, DNS is also used in place of/in addition to BGP-based diversion. But GRE is used for re-injection only. ----------------------------------- Roland Dobbins <rdobbins@arbor.net>