Siemens SIMATIC NET SCALANCE XM-400 Operating Instructions Manual page 16

Recommendations on network security
● Use the configuration options of the interfaces, e.g. the "Edge Type".
● Configure the receive ports so that they discard all untagged frames ("Tagged Frames
Only").
Available protocols
The following list provides you with an overview of the open protocol ports.
The table includes the following columns:
● Protocol
● Port
● Default port status
– Open
– Closed
● Configurable port
– ✓
– --
● Authentication
Specifies whether the communication partner is authenticated.
● Encryption
Specifies whether or not the transfer is encrypted.
Protocol Protocol/
Port number
TELNET TCP/23
SSH TCP/22
HTTP TCP/80
HTTPS TCP/443
SNMP UDP/161
SNTP UDP/123
NTP
PROFINET UDP/34964,
UDP/49154,
49155
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The factory setting of the port is "Open".
The factory setting of the port is "Closed".
The port status can be changed.
The port status cannot be changed.
Default port status
Open
Open
Open
Open
Open
Closed
Open
Configurable port Authentication
-- Yes
-- Yes
-- Yes
✓ Yes
✓ Yes
✓ No
-- No
Operating Instructions, 09/2018, C79000-G8976-C306-08
Encryption
No
Yes
No
Yes
Yes (when
configured)
No
No
SCALANCE XM-400