This line stood out to me (especially after reading the protocol explanation points from a manufacturer just above): &quot;I’m baffled as to why such a well-known brand as Foscam would enable P2P communications on a product that is primarily used to monitor and secure homes and offices.&quot;<p>Well the first answer that came to mind for me was NAT. There&#x27;s a reason you&#x27;ll see both botnets and (commodity, cheap) security cameras generating P2P traffic: NAT.<p>NAT+IPV4 is a problem that adds complexity and less usability at the <i>cost</i> of security. It&#x27;s a clear bolt-on design that consumers have tolerated probably for longer than we should have. I think ISPs have mostly created this problem in being slow to adopt something else.<p>I would also agree that we have a basic usability problem in home routers and pretty much the entire concept of firewalls when it comes to normal users. How do you explain egress traffic filtering to someone who just wants to control their thermostat from their phone and stuff?