AWS VPC Network Security

One of my earlier post on AWS Virtual Private Cloud described  the basics of VPC including some of the security features it offers to control which packets move in and out of the VPC. In this article let's look at the VPC network security in further detail. Following diagram shows an example of how the security groups and … Continue reading AWS VPC Network Security

AWS VPC – NAT Instances and NAT Gateway

NAT Overview Network Address Transaction (NAT) is a technique of assigning a public IP address to a host or a group of hosts within a private network such that all egress network packets have the same public source IP address. NAT helps in limiting the number of public IP addresses required for a private network to … Continue reading AWS VPC – NAT Instances and NAT Gateway

AWS Virtual Private Cloud

AWS Virtual Private Cloud (VPC) is a web service that allows provisioning of a logically isolated infrastructure in the public cloud with its own IP address range, subnets, internet gateway, ACLs and route table configuration. It can be thought of as an isolated data center in AWS. VPC does all the heavy lifting and makes it … Continue reading AWS Virtual Private Cloud