New CloudyScript: Detect Port Ranges

Amazon EC2 uses the notion of Security Groups to let users define inbound firewall rules (called permissions) that are dynamically applied to all server instances that are part of the group. This concept is easy and very powerful at the same time, since permissions must be configured once only and are then applied like a template…

Amazon Security Groups: VPC vs EC2

Amazon has updated Security Groups for Amazon VPC Earlier  in April, while adding support for Security Groups within Amazon VPC, Amazon also introduced some major changes such as: outbound filtering fine grained IP protocol tuning ability to apply changes in a one fell swoop But I found very interesting the fact that we can now…

EC2 Security Groups

From the very beginning, Amazon AWS introduced a security concept called Security Groups in its Elastic Computing platform (EC2). Every virtual instance must be linked to one or more security groups when it is launched. A security group consists of a set of rules (called permissions) that describe who and how instances can be accessed.…