Network security
In the context of Amazon EC2, the role of security groups and network access control lists (NACLs) plays an integral part in establishing the network security of Amazon EC2. The aspect of network security is of paramount importance and a careful balance between accessibility and security is needed while utilizing this layer of defense to enable system functionalities while minimizing your potential vulnerabilities.
Security groups are your primary defense mechanism for your EC2 instances. A security group acts as a virtual firewall for your EC2 instances in regulating the inbound and outbound traffic at the instance level. Each EC2 instance can be associated with one or more security groups with the rules defined to whitelist what traffic is allowed to reach or exit the instances. Importantly, security groups are stateful. This means that any inbound traffic that’s allowed through will automatically enable the outbound traffic to flow through without any...
