Siemens CP 1542SP-1, Руководство по эксплуатации

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Application and functions
1.6 Security functions (CP 1542SP-1 IRC, CP 1543SP-1)
CP 154xSP-1
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Operating Instructions, 12/2019, C79000-G8976-C426-05
You will find additional information on the functionality and configuration of the security
functions in the STEP 7 information system.
CP 1542SP-1 IRC
The CP supports the following security functions:
● Encrypted e-mails
For secure transfer of information with encrypted e-mails, you can use the following as an
alternative:
–
SSL/TLS
– STARTTLS
For information on the configuration, see section E-mail configuration (Page 64).
● Certificates
Certificates are used for the secure authentication of the communications partners.
● Secure telecontrol communication
The telecontrol protocols provide the following Security functions:
● TeleControl Basic
As an integrated security function, the telecontrol protocol encrypts the data for transfer
between the CP and telecontrol server. The interval for the key exchange between the
CP and telecontrol server can be set.
The telecontrol password is used to authenticate the CP on the telecontrol server.
If the security functions are enabled, the CP can process telecontrol communication via
SINEMA Remote Connect.
● SINAUT ST7
The transmission protocols that can be used by the CP for telecontrol communication via
the ST7 protocol support the following security functions:
–
MSC
The MSC protocol supports authentication of the communications partners and simple
encryption of data. A user name and a password are included in the encryption. A
tunnel is established between the MSC station and MSC master station.
– MSCsec
In addition to MSC, with MSCsec, the shared automatically generated key is renewed
between the communications partners at configurable intervals.