I am following this tutorial to configure multiple subnets and firewall:
https://networkfirewall.workshop.aws/setup/distributedmodel.html
This tutorial shows how to filter traffic through the firewall. However, when I look at the Public Subnet
, the CIDR range for the subnet is 10.1.1.0/24
but the route table shows local
destination to be 10.1.0.0/16
, shouldn't it be 10.1.1.0/24
?
Same thing for Private Subnet, the CIDR range for Private subnet is 10.1.0.0/24
but the Route table for local
target shows the destination as 10.1.0.0/16
I am either very confused or have no clue why its configured this way. Can someone please help me understand.
10,1,0,0/16
network as the aggregate, meaning that is what you advertise to the public. Any packets in that range get sent to you, and your network knows how to deliver the packets to the correct subnet. Remember that packets only have the destination address, not the destination mask.