[ceejayoz]

On the last point, just use a VPC, period. I believe Amazon has now made this the default for new accounts, in fact. They come with no downsides and lots of benefits - being able to change security groups on the fly, elastic IPs that stay with the instance when stopped, etc.

[dmourati]

True, all new AWS accounts create VPC based configs. http://docs.aws.amazon.com/AmazonVPC/latest/UserGuide/defaul...