What Is Bootp/Dhcp; What Is Ddns; When Do I Need Ddns Service; Wireless Faq - ZyXEL Communications P-2812HNU-51c Support Notes

P-2812HNU-51C Support Notes

What is BOOTP/DHCP?

BOOTP stands for Bootstrap Protocol. DHCP stands for Dynamic Host Configuration
Protocol. Both are mechanisms to dynamically assign an IP address for a TCP/IP
client by the server. In this case, the device is a BOOTP/DHCP server. Win95 and
WinNT clients use DHCP to request an internal IP address, while WFW and WinSock
clients use BOOTP. TCP/IP clients may specify their own IP or utilize BOOTP/DHCP to
request an IP address.

What is DDNS?

The Dynamic DNS service allows you to alias a dynamic IP address to a static
hostname, allowing your computer to be more easily accessed from various
locations on the Internet. To use the service, you must first apply an account from
several free Web servers such as WWW.DYNDNS.ORG.
Without DDNS, we always tell the users to use the WAN IP of the 312 to reach our
internal server. It is inconvenient for the users if this IP is dynamic. With DDNS
supported by the device, you apply a DNS name (e.g., www.zyxel.com.tw) for your
server (e.g., Web server) from a DDNS server. The outside users can always access
the web server using the www.zyxel.com.tw regardless of the WAN IP of the 312.
When the ISP assigns the device a new IP, the device updates this IP to DDNS server
so that the server can update its IP-to-DNS entry. Once the IP-to-DNS table in the
DDNS server is updated, the DNS name for your web server (i.e., www.zyxel.com.tw)
is still usable.

When do I need DDNS service?

When you want your internal server to be accessed by using DNS name rather than
using the dynamic IP address we can use the DDNS service. The DDNS server allows
to alias a dynamic IP address to a static hostname. Whenever the ISP assigns you a
new IP, the device sends this IP to the DDNS server for its updates.

Wireless FAQ

What is a Wireless LAN?

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