Service Protocol/
Port number
Default port status Congurable Authenti‐
cation
Encryp‐
tion
2)
Local access External ac‐
cess
1)
Port Serv‐
ice
Siemens Re‐
mote Serv‐
ice (cRSP/
SRS)
TCP/443 Outgoing only Outgoing on‐
ly
-- ✓ Optional ✓
SINEMA RC HTTPS/443
and TCP/UDP
depending on
the server
conguration
Outgoing only Outgoing on‐
ly
✓ ✓ ✓ ✓
SMTP Client TCP/25 Outgoing only Outgoing on‐
ly
✓ ✓ -- --
SMTP (se‐
cure)
TCP/465
TCP/587
Outgoing only Outgoing on‐
ly
✓ ✓ 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 Outgoing on‐
ly
✓ ✓ -- --
Syslog Client
TLS
TCP/6514 Outgoing only Outgoing on‐
ly
✓ ✓ -- ✓
Telnet TCP/23 Closed Closed ✓ ✓ ✓ --
TFTP UDP/69 Outgoing only Outgoing on‐
ly
✓ ✓ -- --
TIA Portal
Cloud Con‐
nector
6)
TCP/9023 Closed Closed ✓ ✓ -- --
TCP Event TCP/26864 Closed Closed ✓ ✓ -- --
SMS Relay
7)
TCP/26864 Closed Closed ✓ ✓ -- --
VXLAN
8)
UDP/4789 Closed Closed ✓ ✓ -- --
1)
With SCALANCE M826 and M804PB, only access via vlan1 is possible in the delivery state
(factory setting).
2)
You can nd additional information on the encryption methods used in the WBM appendix
"Ciphers used".
3)
Only open with SCALANCE M826
4)
Only open with SCALANCE S615
5)
Only closed with SCALANCE S615
6)
Not available with SCALANCE MUM85x
7)
Only available with the SCALANCE M87x and MUM85x
8)
Only available with SCALANCE MUM85x
Security recommendations
SCALANCE S615
Operating Instructions, 05/2023, C79000-G8976-C389-08 17