Application and functions
1.4 Security functions
TIM 1531 IRC
18
Operating Instructions, 02/2018, C79000-G8976-C468-02
1.4
Security functions
Security functions of the transmission protocols
The transmission protocols that can be used for telecontrol communication 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. An MSC
tunnel is established between the MSC station and MSC master station.
●
MSCsec
MSCsec supports authentication of the communications partners and data encryption
with a user name and password.
In addition to this, the shared automatically generated key is renewed between the
communications partners at a configurable Key exchange interval.
Further security functions of the TIM
The TIM also supports the following security functions:
●
NTP (secure)
For secure transfer during time-of-day synchronization
●
STARTTLS / SSL/TLS
For the secure transfer of e-mails
●
HTTPS
For secure access to the Web server of the TIM
●
SNMPv3
For secure transmission of network analysis information safe from eavesdropping
Note
Plants with security requirements - recommendation
Use the following options:
•
If you have systems with high security requirements, use the secure protocols for
example HTTPS or SNMPv3.
•
If you connect to public networks, you should use security modules with a firewall, see
below.
Refer to the information in the section Security recommendations (Page 51).
