User's Manual Part 2

71
6.3 DDNS
Dynamic DNS or DDNS is a term used for the updating in real time of
Internet Domain Name System (DNS) name servers. Dynamic DNS
or DDNS is a term used for the updating in real time of Internet
Domain Name System (DNS) name servers. We use a numeric IP
address allocated by Internet Service Provider (ISP) to connect to
Internet; the address may either be stable ("static"), or may change
from one session on the Internet to the next ("dynamic"). However,
a numeric address is inconvenient to remember; an address which
changes unpredictably makes connection impossible. The DDNS
provider allocates a static host name to the user; whenever the user
is allocated a new IP address this is communicated to the DDNS
provider by software running on a computer or network device at
that address; the provider distributes the association between the
host name and the address to the Internet's DNS servers so that
they may resolve DNS queries. Thus, uninterrupted access to
devices and services whose numeric IP address may change is
maintained. (You need to have an account with one of the Service
Providers in the drop-down menu first.)