📄️ CIDR
- Classless Inter-Domain Routing: A method for allocating IP addresses.
📄️ Public vs Private IP
- Private IP can only allow certain values:
📄️ VPC
- Virtual Private Cloud
📄️ Internet Gateway
- Allows resources in VPC to connect to the internet.
📄️ Bastion Hosts
- Use Bastion Host to SSH into private EC2 instances.
📄️ NAT
- Network Address Translation
📄️ Security Groups and NACLs
- Network Access Control List
📄️ AWS Site-to-Site VPN
- To connect on prem data center to VPC.
📄️ Direct Connect
- Provides a dedicated private connection from a remote network to your VPC.
📄️ Transit Gateway
- Transitive peering between thousands of VPC and on-prem, etc.
📄️ IPv6
- Successor of IPv4
📄️ Egress-only Internet Gateway
- Used only for IPv6.
📄️ Networking Costs
- Use Private IP for good savings and better performance.
📄️ AWS Network Firewall
- Protect entire Amazon VPC.