User`s manual

P-660 Series Support Notes

3. Apply the filter set 'NetBIOS_LAN' in the 'Input protocol filters=' in the

Menu 3 for blocking the packets from LAN

Menu 3.1 - General Ethernet Setup

Input Filter Sets:

protocol filters= 2

device filters=

Output Filter Sets:

protocol filters=

device filters=

7. Using the Dynamic DNS (DDNS)

• What is DDNS?

The DDNS service, an IP Registry provides a public central database where

information such as email addresses, hostnames, IPs etc. can be stored and retrieved.

This solves the problems if your DNS server uses an IP associated with dynamic IPs.

Without DDNS, we always tell the users to use the WAN IP of the P-660 to access the

internal server. It is inconvenient for the users if this IP is dynamic. With DDNS

supported by the P-660, 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 P-660.

When the ISP assigns the P-660 a new IP, the P-660 must inform the DDNS server

the change of this IP 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.

The DDNS server stores password-protected email addresses with IPs and hostnames

and accepts queries based on email addresses. So, there must be an email entry in the

P-660 menu 1.

The DDNS servers the P-660 supports currently is WWW.DYNDNS.ORG where you

apply the DNS from and update the WAN IP to.

• Setup the DDNS