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SMA Solar Technology AG
Sunny WebBox with Bluetooth Basics
3.2.3 Access security of the Sunny WebBox with Bluetooth Each user group is protected by a freely selectable password. Passwords are transmitted in encrypted
form. After 4 incorrect password entries access to the Sunny WebBox is blocked for 15 minutes. After
this time you can log in again.
Protect your PV plant from unauthorized access. Take suitable protective measures - amongst others:
• Set up safe passwords (see section 3.2.4 ”Password Quality” (page 21)).
• Change your passwords at regular intervals.
• Use different passwords for different user groups.
• Never leave slips of paper with passwords lying around.
• Install a firewall in Ethernet networks.
• Close unnecessary ports in Ethernet networks.
3.2.4 Password Quality
In order to increase the security of your password, please note the following properties when selecting
a password:
• Use passwords with a minimum length of 8 characters. The longer the password, the more
secure it is.
• Do not use names or terms from dictionaries (for example: "Dog", "Cat", "Mouse", …).
• Do not use data related to your person as passwords (for example names of persons or pets,
personal- or identification numbers, car license plates, …).
• Do not repeat names or terms (for example "househouse", "carcar", …)
• Use a combination of upper and lower case letters, special characters and numbers.
• Do not use number and letter combinations which are consecutive on a keyboard (for example
"12345", "qwerty", …).
3.2.5 SMA Grid Guard
SMA Grid Guard is a security concept for country-specific settings in the inverter, which determine the
network behavior within a grid system. These settings (Grid Guard parameters) are pre-installed in the
devices and can only be changed with the SMA Grid Guard password. In order to change SMA Grid
Guard parameters, you will need to be logged in as an installer and you will need your personal SMA
Grid Guard password, which you can obtain from SMA Solar Technology. The application form for
the personal access code is located in the download area at www.SMA.de/en, in the "Data sheet"
category for each inverter.
User Manual
SWebbox20-BEN104011
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