Agent NAT Traversal: How Agents Communicate Behind Firewalls#

The network topology problem nobody talks about.

Most agent-to-agent communication systems assume agents can directly reach each other. In 2026, that assumption is broken — 70% of consumer devices sit behind NATs, corporate firewalls, or mobile networks with dynamic IPs.

This isn’t just a technical problem. It’s an identity continuity problem, a trust verification problem, and a relay coordination problem wrapped in one.