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Daniel, you theoretically can limit to known RightScale instances, however you run into a potential issues with auto scaling: If you restrict by IP and we autoscale, then the new systems will not be in your allowed list and could cause a self-induced DoS. Same thing with failover. If a region fails and RightScale has to fail over to a different cloud/region, the ability to manage resources in the Cloud Provider would break until they updated the whitelist. As far as the “Managed SSH” feature, it does use SSH, but from YOUR system to the instance, not the RightScale core.
Posted by Phil Cox   Ι   January 24, 2012   Ι   02:28 PM