An APN (Access Point Name) increases security by handling the authentication and security protocols on the IoT SIM card. An APN can be considered the entry point for cellular IoT devices because it serves as a gateway between the cellular network and the internet. It also can manage the type of traffic from other networks whether it is a private network or the internet. A public APN is often provided by many mobile network operators (MNOs) which comes with basic configurations. Public APNs can also come with static public IP addresses, which is when the APN will assign an IP address and be unique to that device each time it connects to the network. Private APNs let you customize your configurations and network settings. A private APN is simple if you are on an APN backed by a software-defined network (SDN).