Axis 223M User Manual page 42

AXIS 223M - System Options
42
Advanced (TCP/IP Settings)
DNS Configuration
DNS (Domain Name Service) provides the translation of host names to IP addresses on
your network.
Obtain DNS server address via DHCP - automatically use the DNS server settings provided
by the DHCP server. Click the View button to see the current settings.
Use the following DNS server address - enter the desired DNS server by specifying the
following:
• Domain name - enter the domain(s) to search for the host name used by the AXIS
223M. Multiple domains can be separated by semicolons (;). The host name is
always the first part of a Fully Qualified Domain Name: for example, myserver is
the host name in the Fully Qualified Domain Name myserver.mycompany.com
where mycompany.com is the Domain name.
• Primary DNS server - enter the IP address of the primary DNS server.
• Secondary DNS server - will be used if the primary DNS server is unavailable.
NTP Configuration
Obtain NTP server address via DHCP - check this option to automatically look up and use
the NTP server settings as provided by DHCP. Click the View button to see the current
settings.
Use the following NTP server address - to make manual settings, check this radio button
and enter the host name or IP address of the NTP server.
Host Name Configuration
The AXIS 223M can be accessed using a host name, instead of an IP address. The host
name is usually the same as the assigned DNS Name. It is always the first part of a Fully
Qualified Domain Name and is always one word, with no period. For example, myserver is
the host name in the Fully Qualified Domain Name myserver.mycompany.com.
Enabling dynamic DNS updates allows you to alias a dynamic IP address to a static host
name, allowing your computer to be more easily accessed from various locations on the
Internet. Outside users can always access your server using the associated DNS name
regardless of the WAN IP. The DNS server used by the user and/or the DNS server
responsible for the domain in use must support RFC2136 and allow updates from the
camera.
The TTL (Time To Live) value determines how long (in seconds) the reply from the DNS
server should be remembered for when checking that the domain name for the registered
IP address is still valid.