What are the security risks of hole punching in IoT

Question

I've heard that NAT hole punching is commonly used in peer-to-peer IoT communication, but I’m concerned about its security implications.

• Does hole punching create an open entry point that attackers can exploit?
• Can it bypass firewalls and lead to unauthorized access?
• Are there best practices to mitigate risks while still allowing hole punching for connectivity?

Looking for insights on whether NAT hole punching introduces major security concerns in IoT networks.