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A comment on How we found a bug in Amazon ELB. Parent comment

Re:How we found a bug in Amazon ELB by itaifrenkel on Thursday April 28, 2016 @06:34PM (#11592382)
I've heard that cross zone load balancing means the vpc encryption does not cover traffic between zones (the traffic is isolated like in ec2 classic). Is that substantiated?
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Re:How we found a bug in Amazon ELB by otterley on Thursday April 28, 2016 @06:45PM (#11592427)
Network communication between instances in a VPC is not encrypted, and never has been, to my knowledge. Perhaps you're thinking of VPN?
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