Classless Inter-Domain Routing

The other is a locksmith that's never once asked.

We also cover CIDR, the mathematically verified policy engine replacing static role-based access, and how an employee reaches a 20-year-old Kerberos app from a coffee shop with zero VPN and zero exposed ports.

If your cloud roles have more access than they need, this episode explains exactly why.

In July 2019, a single piece of hardware was tricked into asking a seemingly simple question.

Maybe Terraform discovers all availability zones and creates a subnet in each one.

But the module only has three CIDR blocks.

Maybe there are three NAT gateways, three route tables, three entries in a configuration array.

The code was dynamic enough to discover the fourth zone.