Campbell CELL205 Product Manual page 23

9. On the Cellular tab, enter the APN provided by your cellular provider.
10. (Optional) By default, the CELL200 series will accept incoming communications from any IP
address. This can be a security risk. You may specify up to four IP addresses, with wild cards,
to limit connections to only those trusted sources. Use an asterisk (*) as a wild card. For
example, a setting of 166.22.*.* would allow connections from devices that have IP
addresses starting with 166.22. Both IPv4 and IPv6 addresses are supported.
CAUTION:
Only set a Trusted IP address if you are familiar with their use. Consult your IT
department or Campbell Scientific for assistance.
NOTE:
This setting does not affect outbound connections, only incoming connections.
CELL200-Series 4G LTE Cellular Module 11