Siemens SCALANCE W778-1 Operating Instructions Manual page 9

● The following protocols provide secure alternatives:
– SNMPv1/v2 → SNMPv3
– HTTP → HTTPS
– Telnet → SSH
– SNTP → NTP
● Use secure protocols when access to the device is not prevented by physical protection
measures.
● To prevent unauthorized access to the device or network, take suitable protective
measures against non-secure protocols.
● If you require non-secure protocols and services, operate the device only within a
protected network area.
● Restrict the services and protocols available to the outside to a minimum.
Available protocols per port
The following list provides you with an overview of the open ports on this device.
The table includes the following columns:
● Protocol
All protocols that the device supports
● Port number
Port number assigned to the protocol
● Port status
– Open
– Open (when configured)
SCALANCE W778-1 /W738-1
Operating Instructions, 01/2107, C79000-G8976-C450-01
Check whether use of SNMPv1 is necessary. SNMPv1 is classified as non-secure.
Use the option of preventing write access. The product provides you with suitable
setting options.
If SNMP is enabled, change the community names. If no unrestricted access is
necessary, restrict access with SNMP.
Use SNMPv3 in conjunction with passwords.
The port is always open and cannot be closed.
The port is open if it has been configured.
Security recommendations
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