Siemens SCALANCE X-300

● Authentication
Specifies whether the communication partner is authenticated.
● Encryption
Specifies whether or not the transfer is encrypted.
Protocol Port number Port status Factory setting Authentication Encryption
FTP TCP/21 Open Open Yes No
SSH TCP/22 Open Open Yes Yes
TELNET TCP/23 Open
(when config‐
ured)
Open Yes Yes
HTTP TCP/80 Open
(when config‐
ured)
Open Yes No
PROFINET IO
Service
TCP/84 Open Open No No
HTTPS TCP/443 Open Open Yes Yes
DHCP UDP/68 Open
(when config‐
ured)
Open No No
SNTP UDP/123 Open
(when config‐
ured)
Closed No No
NTP (secure) Yes
SNMP UDP/161 Open
(when config‐
ured)
Open Yes Yes
(SNMPv3)
RADIUS UDP/1812,
1813
Open Open Yes No
PROFINET IO UDP/34964
UDP/49152,
49153 *
)
Open
(when config‐
ured)
Open No No
*
)
These ports are assigned dynamically and can differ from the values specified here.
Recommendations on network security
SCALANCE X-300
20 Operating Instructions, 11/2019, A5E01113043-24