Your Firewall Can't Hear Radio
A Letter From Eldad
For the people who own the doors, the alarms and the network.
For most of my career, security meant watching the wire. If you could see every packet, you could protect the network.
Not anymore.
Walk through any hospital, warehouse, water plant or office tower and look for the things that talk through the air. The badge reader at the front door. The emergency phone in the elevator. The alarm panel with a cellular backup. The pump controller with a 4G modem a vendor installed to skip a two-hour drive. The wireless sensors on the chillers.
Not one of them asks your firewall for permission. Many of them never touch it.
This book isn't against wireless. Radio is cheaper than cable. It reaches places cable can't. It keeps working when the network goes down. That's exactly why it's everywhere.
It's a case for three simple rules. Every connection has an owner. Every connection has a reason. And someone is paying attention.
Like the four books before it, this one labels every story, so you always know what kind of evidence you're reading. It's short on purpose. Seven chapters. One idea.
Your firewall guards the wires. Someone has to watch the air.
Eldad Matityahu
Founder and CEO, NetOps IQ