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EC2 (and OpenStack) uses security groups to give you the best of both worlds: shared address space so you _can_ route to other customers; but the firewall means
by justinsb 12y ago
EC2 (and OpenStack) uses security groups to give you the best of both worlds: shared address space so you _can_ route to other customers; but the firewall means you have to explicitly allow the traffic.
- res0nat0r 12y agoYup EC2 security groups are great for ease of management. Group to Group communication for something like load balancers to auto scaling back-end app servers is great as you don't have to worry at all about tracking IP addresses.