Siemens SCALANCE W1750D UI

SCALANCE W1750D UI
Configuration Manual, 02/2018, C79000-G8976-C451-02
299
Dynamic DNS Registration
18
18.1
Enabling Dynamic DNS
The Access Points support the dynamic DNS feature which enables updating the
DNS records of the AP and the clients connected to it. In a scenario where the public IP
address is dynamically handed to the AP by the ISP, there are instances when the client
loses remote connectivity to the AP when there is a change in the IP address. Similarly, in
case of AP clients, where the AP acts as a DHCP server, the host becomes unreachable
when the dynamically assigned IP address is changed. The dynamic DNS feature eliminates
these issues by configuring a domain name, thus providing a uniform approach to access the
AP or the clients. The IP address of the dynamic DNS client is mapped to the domain name
and this gets automatically updated each time the IP address is changed.
You can enable Dynamic DNS using the SCALANCE W UI or the CLI.
In the SCALANCE W UI
To enable dynamic DNS:
1. Navigate to
Services > Dynamic DNS
.
Parameter
Description
Example
Key Configures a Transaction Signature (TSIG) shared
secret key to secure the dynamic updates.
The following algorithm names are supported:
• hmac-md5 (used by default if algo-name is not
specified)
• hmac-sha1
• hmac-sha256
•
NOTE:
When a
key
is configured, the update is
successful only if AP and DNS server clocks are
in sync.
hmac-sha1:siemensddns:
16YuLPdH21rQ6PuK9udsVLtJw3
Y=
Server IP Enter the server IP address of the DNS server to
which the client updates are sent.
10.17.132.85