Siemens SCALANCE X320-3LD FE Operating Instructions Manual page 22

Safety instructions
1.4 Security recommendations
● 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.
● For the DCP function, enable the "DCP read-only" mode after commissioning.
Available protocols per port
The following list provides you with an overview of the open ports on this device. Keep this in
mind when configuring a firewall.
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)
● Default status of the port
– Open
– Closed
● Authentication
Specifies whether or not the protocol is authenticated during access.
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The port is always open and cannot be closed.
The port is open if it has been configured.
Note
With some protocols the port may be open although the corresponding protocol is
disabled, for example TFTP.
As default the port is open.
As default the port is closed.
Operating Instructions, 05/2016, A5E01113043-20
SCALANCE X-300