Siemens SIMATIC NET SCALANCE M826, Руководство по эксплуатации

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Security recommendations
SCALANCE M826
14
Operating Instructions, 08/2018, C79000-G8976-C362-05
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
The port is always open and cannot be closed.
– Open (when configured)
The port is open if it has been configured.
● Default port status
–
Local access
Default port status of the port when the port is accessed via a local connection, e.g.
via LAN.
– External access
Default port status of the port when the port is accessed via an external connection,
e.g. WAN, WLAN, VPN.
● Authentication
Specifies whether or not the protocol is authenticated during access.
● Encryption
Specifies whether the transfer is encrypted.
Protocol Protocol/port
number
Port status Default port status Authentication Encryption
Local access External
access
SSH
SFTP TCP/22 Open
(when configured)
Open Closed Yes Yes
HTTP TCP/80 Open
(when configured)
Open Closed Yes No
HTTPS TCP/443 Open Open Closed Yes Yes
SNTP UDP/123 Open
(only outgoing)
Closed Closed No No
SNMP v1/v3 UDP/161 Open
(when configured)
Open Closed Yes Yes (when con-
figured)
DNS Server TCP/53 Open
(when configured)
Open Closed No No