Morningstar Communications Document
53Morningstar Product Connectivity Manual
52
Network Security
General
Morningstar controllers/inverters do not contain any built-in security features or protections. The
user is responsible for security through network conguration and settings. There will be no login
or password required to communicate with the controller/inverter. If your system has internet ac-
cess, use of a rewall is highly recommended to prevent unauthorized users from accessing the
controller.
Basic Security
If your Morningstar product will be connected to the internet, it is highly advised that it is pro-
tected behind the rewall of another device, such as a router. Linksys
TM
brand routers are a cost
effective way to provide a moderate amount of internet security (if congured properly).
Ethernet equipped Morningstar products and the EMC-1 have an Ethernet Security DIP switch
setting to allow/disable write commands to the unit’s internal memory. (i.e. TSMPPT - DIP Switch
#8; EMC-1 DIP Switch #1) This a safety feature to prevent unintended changes to custom set-
tings, but it is not a replacement for proper network security. Never connect units to an open or
unprotected network.
NOTE: Adjustments to network settings and custom
charging setpoints are always enabled via RS-232 or EIA-
485. The Ethernet Security switch only enables/disables
remote conguration via TCP/IP.
CAUTION: Risk of Tampering
The Ethernet Security settings switch is NOT a replacement for network security. A network
rewall should be used.
CAUTION: Risk of Tampering
The Ethernet Security settings switch does not block write commands to devices bridged via EIA-
485.
High-Security Applications
Applications with tighter security needs will require more advanced routers or other equipment.
Wireless applications are an example; wireless transmission is much easier to intercept than is
wired transmission. To reduce the risks of sending sensitive information wirelessly, data encryp-
tion in conjunction with a rewall should be used.
Network Security10.0
Figure 41. Digi TransPort Cellular Modem Family
For wireless cellular connections, the Digi TransPort Cellular Modem family provides enhanced
security features for enterprise-class applications. (Shown above.)