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Domain Name System (DNS) Suppose that a Company has a website hosted in the AWS Cloud. Customers enter the web address into their browser, and they are able to access the website. This happens because of Domain Name System (DNS) resolution. DNS resolution involves a customer DNS resolver communicating with a company DNS server. You can think of DNS as being the phone book of the internet. DNS re..

Some pieces that need to care regarding Networking: Network hardening Application security User Identity Authentication and authorization Distributed denial of service prevention Data integrity Encryption Network Hardening: Network ACL >> acts like a guard on the path Stateful: has memory to allow Stateless: has no memory (remembers nothing) regardless of any circumstances On return Security Gro..

Amazon Virtual Private Cloud (Amazon VPC) Take order (Frontend) >> Public Subnet Barista (Backend) >> Private Subnet Imagine the millions of customers who use AWS services. Also, imagine the millions of resources that these customers have created, such as Amazon EC2 instances. Without boundaries around all of these resources, network traffic would be able to flow between them unrestricted. A net..