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VPC (CIDRs for subnets (10.0.0.0 - 10.255.255.255 (10.0.0.0/8), 172.16.0.0…
VPC
CIDRs for subnets
10.0.0.0 - 10.255.255.255
10.0.0.0/8
172.16.0.0 - 172.31.255.255
172.16.0.0/12
192.168.0.0 - 192.168.255.255
192.168.0.0/16
default VPC
has default Internet Gateway
public ips
super easy to use
create a custome one before attaching subnets to it
Direct Connect
connects your DataCenter to AWS
high throughput workload
reliable secure connection
contains subnets
private
public
one subnet belongs to one AZ
no subnet cross over availability zones
vpc can have >= 0 subnets per AZ
Bastion Host
EC2 Instance in public access
to manage instances in private subnets
Star arranged
not transitive
If VPCa --> VPCb and VPCb --> VPCc
NOT VPCa --> VPCc
VPN
Hardware Virtual Private Network
between Corporate DataCenters and AWS
Access Lane Public
Internet Gateway (IGW)
Router
Route Table
Network ACL
public subnet
security group (sg)
instance (ec2)
Access Lane Private
Virtual Private Gateway
Router
Route Table
Network ACL
private subnet
security group (sg)
instance (ec2)
Each VPC randomizes the AZs in its region
eu-central-1a can be a different az as the az with same name in other VPC
subnet network control list (ACLs)
Private Virtual Part of AWS Cloud
launch instances in subnets of your choice
assign IP Address Ranges (CIDRS) in each subnet
security group is stateful
ACL is stateless
Routing Tables between subnets