Configuration and operation
6.1 Security recommendations
CP 443-1 Advanced (GX30)
Manual, 03/2019, C79000-G8976-C256-05
65
If you want to later change parameters in a DB, for example a password, remember the
following: The contents of a DB with know-how protection are no longer visible and can only
be changed via the source or by direct assignment of parameters.
Passwords
●
Define rules for the use of devices and assignment of passwords.
●
Regularly update the passwords to increase security.
●
Only use passwords with a high password strength. Avoid weak passwords for example
"password1", "123456789" or similar.
●
Make sure that all passwords are protected and inaccessible to unauthorized personnel.
See also the preceding section for information on this.
●
Do not use one password for different users and systems.
Certificates and keys
●
Use a certification authority including key revocation and management to sign certificates.
●
Make sure that user-defined private keys are protected and inaccessible to unauthorized
persons.
●
It is recommended that you use password-protected certificates in the PKCS #12 format
●
Verify certificates and fingerprints on the server and client to prevent "man in the middle"
attacks.
●
It is recommended that you use certificates with a key length of at least 2048 bits.
●
Change certificates and keys immediately if there is a suspicion of compromise.
Protocols
List of available protocols
The following is a list of all available protocols and their ports through which the device can
be accessed.
Service/
Protocol
Protocol/
port number
Default port
status
Configurable
Authentication
Encryption
Service Port
S7 protocol
TCP/102
Open
--
--
No
No
HTTP
TCP/80
Open
✓
--
No
No
HTTPS
TCP/443
Closed
✓
--
Yes
Yes
FTP
FTPS
TCP/20
TCP/21
Closed
✓
✓
Yes
No
Yes
SNMP
UDP/161
Open
✓
--
Yes (with
SNMPv3)
Yes (with
SNMPv3)
TCP Modbus
TCP/502
Closed
✓
--
No
No
IPsec
UDP/500
Closed
✓
--
Yes
Yes
Содержание SIMATIC NET CP 443-1 Advanced
Страница 8: ...Preface CP 443 1 Advanced GX30 8 Manual 03 2019 C79000 G8976 C256 05 ...
Страница 48: ...Requirements for use 3 5 Programming CP 443 1 Advanced GX30 48 Manual 03 2019 C79000 G8976 C256 05 ...
Страница 116: ...Approvals CP 443 1 Advanced GX30 116 Manual 03 2019 C79000 G8976 C256 05 ...
Страница 126: ...Index CP 443 1 Advanced GX30 126 Manual 03 2019 C79000 G8976 C256 05 ...