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Configuration
4.1 Security recommendations
CP 1243-8 IRC
Operating Instructions, 02/2018, C79000-G8976-C385-03
57
●
Default of the port
–
Open
The port is open at the start of the configuration.
–
Closed
The port is closed at the start of the configuration.
●
Port status
–
Open
The port is always open and cannot be closed.
–
Open after configuration
The port is open if it has been configured.
–
Open (login, when configured)
As default the port is open. After configuring the port, the communications partner
needs to log in.
–
Closed after configuration
The port is closed because the CP is always client for this service.
●
Authentication
Specifies whether or not the protocol authenticates the communications partner during
access.
Protocol / function Port number (pro-
tocol)
Default of the port Port status
Authentication
DNP3
20000 (TCP)
Closed
Open after configuration
Yes, when secure
authentication is ena-
bled.
IEC
102 (TCP)
Closed
Open
No
S7 and online
connections
2404 (TCP)
Open
Open after configuration *
No
Online security
diagnostics
8448 (TCP)
Closed
Open after configuration
No
Communication
via SINEMA RC
8448 (TCP)
Closed
Open after configuration
Yes
HTTP
80 (TCP)
Closed
Open after configuration
Yes
HTTPS
443 (TCP)
Closed
Open after configuration
Yes
SNMP
161 (UDP)
Open
Open after configuration
Yes (with SNMPv3)
* For information on avoiding opening the port during diagnostics, see section Online