Axis Communications AXIS 221 - Manual (Page 39)

39 AXIS 221 - System Options
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 221 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 when checking that the domain name for the registered IP
address is still valid.
Link-Local IPv4 Address
Link-Local Address is enabled by default and assigns the AXIS 221 with an additional IP
address for the UPnP protocol. The AXIS 221 can have both a Link-Local IP and a
static/DHCP IP address at the same time - these will not affect each other. See Network -
UPnP™, on page 42.
HTTP
The default HTTP port number (80) can be changed to any port within the range
1024-65535. This is useful for e.g. simple port mapping.
HTTPS
The default HTTPS port number (443) can be changed to any port within the range
1024-65535. HTTPS is used to provide encrypted web browsing.
NAT Traversal
Use NAT traversal when your AXIS 221 is located on an intranet (LAN) and you wish to
make it available from the other (WAN) side of a NAT router. With NAT traversal properly
configured, all HTTP traffic to an external HTTP port in the NAT router will be forwarded
to the network camera.
Enable/Disable - When enabled, the AXIS 221 will attempt to configure port mapping in a
NAT router on your network, using UPnP™.
Use manually selected NAT router - Select this option to manually select a NAT router.
Enter the IP address for the router in the field provided.