Dynamic Ip Registration; Ip Security (Ipsec); Figure 14 - Enabling Dynamic Ip Registration - red lion BT-6821-AT-AC User Manual

This mode allows only one IP address to be assigned to the first connected device via DHCP (This configuration is not
recommended for BT-6x21).
6.4

Dynamic IP registration

This feature allows the modem to report a message to a user-configurable IP address every time its WAN IP address
changes.
It is useful when the cellular account is associated with a dynamic IP address. Since the WAN IP address will be changing
regularly, it will be impossible for the user to know which WAN IP address is assigned to the modem. With Dynamic IP
Registration enabled, the modem will notify a remote server of the new WAN IP address as well as the modem's ESN in
hexadecimal format. The IP Registration packet can be sent using either TCP or UDP.
To configure Dynamic IP Registration, navigate to CONF (Modem Configuration) > General, and set the destination IP
address and port. The registration timer is a value (in minutes) that controls how often the modem should report its IP
to the server. If it is set to zero, the modem will report its WAN IP address upon boot-up or upon acquiring a new IP
address from the cellular carrier after losing the cellular connection. If it is set to a value between 1 and 65535, then it
will report its ESN and WAN IP regularly at the specified interval.
6.5

IP Security (IPSEC)

The modem supports up to 10 IPSEC VPN tunnels used to secure communications with remote servers.
Please refer to the "Getting Started with IPSEC" application notes for further details.
Note
Figure 14 – Enabling Dynamic IP Registration