What are firewalls?

They protect us. From virus. From spies. From Trojans coming to burn down our houses. They protect us from saying and doing what we please. They protect us.

“…inspects network traffic passing through it, and denies or permits passage based on a set of rules.”

Firewall is walking three feet away and three feet back. Well that’s nine steps we’re off-step. That’s nine blocks of jamming cold hands in tight pockets. Nine words just on the tip of your tongue, swallowed.

“A firewall's basic task is to regulate some of the flow of traffic between computer networks of different trust levels.”

Firewalls put us in our own fishbowls. (And we all swim in bowls. Small glass ones with curved edges.)

They protect us, they say.

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