Security recommendations
SCALANCE S615
Operating Instructions, 10/2022, C79000-G8976-C389-07
19
Service
Protocol/
Port number
Default port status Configurable
Authent-
ication
Encryption
2)
Local
access
External
access
1)
Port Servic
e
IPsec/IKE
UDP/500
UDP/4500
Closed
Closed
--
✓
✓
✓
NTP Client
UDP/123
Outgoing
only
Outgoin
g only
✓
✓
--
--
NTP Client
(secure)
UDP/123
Outgoing
only
Outgoin
g only
✓
✓
✓
--
NTP Server
UDP/123
Closed
Closed
✓
✓
--
--
NTP Server
(secure)
UDP/123
Closed
Closed
✓
✓
✓
--
OpenVPN
UDP/1194
TCP/1194
Outgoing
only
Outgoin
g only
✓
✓
✓
✓
Ping
ICMP
Open
Closed
--
✓
--
--
PROFINET
UDP/34964
UDP/49154
UDP/49155
Open
Closed
--
✓
--
--
RADIUS
Client
UDP/1812
Closed
Closed
✓
✓
✓
Optional
UDP/1813
--
SFTP Server TCP/22
Outgoing
only
Outgoin
g only
✓
✓
✓
✓
Siemens
Remote
Service
(cRSP/SRS)
TCP/443
Outgoing
only
Outgoin
g only
--
✓
Optional
✓
SINEMA RC HTTPS/443
and TCP/UDP
depending on
the server
configuration
Outgoing
only
Outgoin
g only
✓
✓
✓
✓
SMTP Client TCP/25
Outgoing
only
Outgoin
g only
✓
✓
--
--
SMTP
(secure)
TCP/465
TCP/587
Outgoing
only
Outgoin
g only
✓
✓
Optional
✓
SNMPv1/v2c UDP/161
Open
Closed
✓
✓
--
--
SNMPv3
Server
UDP/161
Open
Closed
✓
✓
Optional
Optional
SNMP Trap UDP/161
Open
Closed
✓
✓
Optional
Optional
SNTP Client UDP/123
Closed
Closed
✓
✓
--
--
SSH CLI
TCP/22
Open
Closed
✓
✓
✓
✓
Syslog Client UDP/514
Outgoing
only
Outgoin
g only
✓
✓
--
--
Syslog Client
TLS
TCP/6514
Outgoing
only
Outgoin
g only
✓
✓
--
✓
Telnet
TCP/23
Closed
Closed
✓
✓
✓
--
TFTP
UDP/69
Outgoing
only
Outgoin
g only
✓
✓
--
--
TIA Portal
Cloud
Connector
6)
TCP/9023
Closed
Closed
✓
✓
--
--
TCP Event
TCP/26864
Closed
Closed
✓
✓
--
--