

According to the manual no port forwarding is needed to connect to the camera when away from home. To use the camera the user is supposed to use an app called “Doby” according to the user manual supplied, this app will assist in setting up the camera and can later be used to view the camera both on your home network as well as outside. The camera in question is a “Smart WiFi Camera” sold under the brand name Sinji. To keep things clear certain packets will be removed from example traffic when not relevant for the point I’m trying to make. Please note that network traffic analyzed in these posts could be edited to preserve privacy. I was interested to know how it allows remote access without port forwarding, so had a look at how it works.

RFC 3489 STUN - Simple Traversal of User Datagram Protocol (UDP) Through Network Address Translators (NATs) - the first version of STUN.This post is about a cheap WiFi camera sold as a baby/house monitor. There is no preference setting for the STUN dissector. The well known UDP/TCP port for STUN traffic is 3478.
