Siemens SCALANCE W1750D UI Configuration Manual page 22

Security recommendations
● Configure a Syslog server to forward all logs to a central location.
● Use WPA2/ WPA2-PSK with AES to protect the WLAN.
Passwords
● Define rules for the use of devices and assignment of passwords.
● Regularly update passwords and keys to increase security.
● Change all default passwords for users before you operate the device.
● Only use passwords with a high password strength. Avoid weak passwords for example
password1, 123456789, abcdefgh.
● Make sure that all passwords are protected and inaccessible to unauthorized personnel.
● Do not use the same password for different users and systems or after it has expired.
Keys and certificates
● This section deals with the security keys and certificates you require to set up HTTPS (
HyperText Transfer Protocol Secured Socket Layer).
● We strongly recommend that you create your own HTTPS certificates and make them
available. There are preset certificates and keys on the device. The preset and
automatically created HTTPS certificates are self-signed. We recommend that you use
HTTPS certificates signed either by a reliable external or by an internal certification
authority. The HTTPS certificate checks the identity of the device and controls the
encrypted data exchange. You can install the HTTPS certificate via the SCALANCE W
UI, see "Uploading Certificate".
● Handle user-defined private keys with great caution if you use user-defined SSH or SSL
keys.
● Use the certification authority including key revocation and management to sign the
certificates.
● Verify certificates and fingerprints on the server and client to avoid "man in the middle"
attacks.
● We recommend that you use certificates with a key length of 2048 bits.
● Change keys and certificates immediately, if there is a suspicion of compromise
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Configuration Manual, 02/2018, C79000-G8976-C451-02
SCALANCE W1750D UI