This object is used to describe an Amazon EC2 security group. It is returned by VM::EC2->describe_security_groups(). You may also obtain this object by calling an Instance object's groups() method, and then invoking one of the group's permissions() method. See VM::EC2::Group. METHODS. The following object methods are supported:

Q.294: What is a Security Group? | Briefing Amazon Know Mar 12, 2017 Amazon Elastic Cloud Compute - - Amazon Elastic Compute Cloud (Amazon EC2) is a web service that provides secure, resizable (scalable) compute capacity in the cloud. It is designed to make web-scale cloud computing easier for developers. It is the central part of Amazon’s cloud-computing platform known as Amazon Web Services (AWS). Unlike traditional data centers, which lease physical resources, Amazon EC2 clouds lease Amazon Security Groups - 5 Important Best Practices for Avoid Incoming Traffic on CIDR Allowing incoming access by opening up ports for … AWS EC2 Best Practices - Cloud Conformity

Security groups control the traffic coming into and going out of an Amazon EC2 instance. You can call then as firewalls within EC2. In EC2 each instance must be connected to a Security Group. Security groups are region specific. Security group of one region is not accessible from another region. Go to Amazon EC2 console.

Add Cloudflare IPs Amazon EC2 Security Group May 06, 2016 AWS Developer Forums: Not able to ping EC2 instance to

For examples of security group rules for specific kinds of access, see Security group rules reference in the Amazon EC2 User Guide for Linux Instances. Stale security group rules If your VPC has a VPC peering connection with another VPC, a security group rule can reference another security group in the peer VPC.

The security group is like a wrapper around the EC2 instance. It controls any traffic that originates from and is destined to the EC2 instance. Let's say we also have another EC2 instance in the Lesson 4 - How to setup Security Group on EC2 Oct 27, 2014 Amazon EC2 - Adding a Security Group Rule - YouTube