Preface
SIMATIC MV500
Operating Instructions, 05/2019, C79000-G8976-C494-02
7
Passwords
● Activate user management and create new user profiles.
● Change all default passwords for users before operating the device.
● Only use passwords with high password strength. Avoid weak passwords, e.g.
password1, 123456789, abcdefgh.
● Define rules for using devices and assigning passwords.
● Make sure that all passwords are protected and inaccessible to unauthorized personnel.
● Do not use the same password for different users and systems.
● Update passwords and keys regularly to improve security.
Firmware encryption
The firmware itself is signed and encrypted. This ensures that only authentic firmware can be
downloaded to the device.
Secure/non-secure protocols
● Check whether it is necessary to use SNMPv1. SNMPv1 is classified as non-secure.
Make use of the possibility to prevent write access. The product offers corresponding
settings for this.
● If SNMP is activated, change the community names. If unrestricted access is not
necessary, limit access via SNMP.
● Use secure protocols if access to the device is not protected by means of physical
safeguards.
The following protocols provide secure alternatives:
HTTP → HTTPS
● To prevent unauthorized access to the device or network, set up appropriate safeguards
against non-secure protocols.
● Enable only the services (protocols) that will actually be used on the device. The same
applies to the installed interfaces/ports. Unused ports could be used to access the
network downstream from the device.
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