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

Recommendations on network security
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
DHCPv4 Server
DHCPv4 Client
DHCPv6 IPv6
Discard
Echo IP
EtherNet/IP
HTTP
HTTPS
Kerberos
MSDP
NTP
SNTP
NTP (secure)
PROFINET
16
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.
Protocol/ Default port status Configurable port
Port number
UDP/67 Closed
UDP/68 Open
UDP/546 Closed
TCP/9 Open, filtered
UPD/TCP/9 Open
TCP/44818 Closed
UDP/2222
UDP/44818
TCP/80 Open
TCP/443 Open
TCP/464 Open, filtered
TCP/639 Closed
UDP/123 Closed
UDP/123 Closed
UDP/34964, Open
UDP/49151
... 49159
1)
Authentication
✓ No
✓ No
✓ No
-- No
-- No
✓ No
✓ Yes
✓ Yes
-- No
✓ No
✓ No
✓ Yes
✓ No
Operating Instructions, 03/2021, C79000-G8976-C306-10
Encryption
No
No
No
No
No
No
No
Yes
No
No
No
No
No
SCALANCE XM-400