AWS – Page 19 – Scriptorium

[AWS] Load Balancing

Load balancing is a method used to distribute incoming connections across a group of servers or services.

Elastic Load Balancing (ELB) automates distributing traffic evenly to all instances in multiple AZs within a region.
- Cross Zone Load Balancing allows load balancers to cross multiple AZs.
SSL can be directly applied to ELB – can help reduce the compute power on an EC2 instance.

[AWS] CloudFront

CloudFront is a Content Delivery Network (CDN) – lower latency, higher transfer speed, and reduced server load. It has built-in DDoS (distributed denial of service) attack protection.

[AWS] Route 53

Route 53 configures and manages domains: domain registration, DNS (Domain Name System) service, and health checking. – DNS uses port 53. That is how the name comes from.

Domain Name System (DNS)

DNS is a process of mapping a human-friendly domain name to an IP address.

DNS Root Servers: A group of servers to answer the root zone. Top Level Domains (TLDs) are controlled by the root zone database – Internet Assigned Numbers Authority (IANA).
Domain Registrars: All domain names must be unique. A registrar is an authority that can assign domain names to top-level domains and ensure its uniqueness. Each domain name becomes registered in a central database (WhoIS server).

[AWS] VPC – VPC Flow Logs

This post deals with how to monitor VPC traffics. VPC Flow Logs can capture IP traffic information going from or to the network interfaces in a VPC.

[AWS] VPC – Security

VPCs can be protected with 2 layers of firewalls; One for a subnet (NACL) and another for an instance (Security Group).

[AWS] VPC – IGW

Internet Gateway (IGW) is a VPC component that allows communication between resources in the VPC and the internet. It is horizontally scaled, redundant, and highly available.

[AWS] VPC – Subnets and Routing Tables

Subnets are the logical network that you group your resources in a single local network. Communication in and out of a subnet is of critical importance, and a routing table contains the rules on how traffic can be directed.

Tag Archives: AWS