Firewalling the AI Era: Why the Network Still Decides
Cisco, Thursday, November 5th, 2026
Cisco argues firewalls remain essential as autonomous AI agents act across enterprise networks, providing visibility and enforcement.
Cisco argues that AI agents acting under delegated authority turn one human request into hundreds of machine-initiated interactions, shifting the unit of risk from the session to the task.
Firewall policy must evolve from asking whether an actor can connect to whether it is behaving within its role, using context on the agent, owner, task, model, and tools.
As enterprises run private models and MCP servers internally, more AI traffic moves within the enterprise, making distributed Hybrid Mesh Firewall enforcement more important.
With attackers using AI to shrink time to exploitation, Cisco highlights virtual patching and SnortML in Cisco Secure Firewall, and notes the network provides an independent record of what agents actually touched.