Can edge agent be a MQTT broker / local subscriber?

Our use scenario has 1000 (to start, 10k as next step) MQTT sensors being
aggregated / monitored / controlled at the edge, rather than connecting directly
to the cloud.

Can the Losant edge agent handle this?

Have not seen any example, and when we deploy a workflow to the edge
agent that has a MQTT receive node, there is no port 1883 or 8883 opened
on the edge agent.

Thanks for any help.