Siemens Simatic Net Scalance M812 Operating Instructions Manual page 13

Protocol
OpenVPN to SINEMA RC
TFTP
DynDNS
Telnet
Ping
SCALANCE M812, M816
Operating Instructions, 08/2016, C79000-G8976-C343-04
Port number Port status
TCP, any Open (only outgoing)
UDP/69 Open (only outgoing)
TCP/80 Open (only outgoing)
TCP/23 Open (when configured)
ICMP Open
Security recommendations
Factory setting
Internal External
interface interface
Closed Closed
Closed Closed
Closed Closed
Open Closed
Open Closed
Authentication
Yes
No
No
Yes
No
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