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OfficeConnect VPN Firewall User’s Manual Chapter 10. Configuring DDNS

10 Configuring DDNS

Dynamic DNS is a service that allows computers to use the same domain name,

even when the IP address changes from time to time (during reboot or when the

ISP's DHCP server resets IP leases). OfficeConnect Gigabit VPN Firewall

connects to a Dynamic DNS service whenever the WAN IP address changes. It

supports setting up the web services such as Web server, FTP server using a

domain name instead of the IP address. Dynamic DNS supports the DDNS

clients with the following features:

 Update DNS records (addition) when an external interface comes up

Any interface status change to an external interface sends a DDNS update to

the DDNS service provider.

Dynamic DNS Client

DDNS client uses the mechanism provided by the popular DDNS service

providers for updating the DNS records dynamically. In this case, the service

provider updates DNS records in the DNS. OfficeConnect Gigabit VPN Firewall

uses HTTP to trigger this update.

The OfficeConnect Gigabit VPN Firewall supports HTTP DDNS update with the

following service providers:

 DynDNS.org

 TZO.com

 Oray.net

 DtDNS.com

 3322.org

Internet

ISR

HTTP DDNS Server

(DynDNS, TokyoDNS)

DynDNS

sl1000.homeunix.com

TokyoDNS

sl1000.dns-tokyo.jp

Figure 10.1 Network Diagram for HTTP DDNS

Whenever IP address of the configured DDNS interface changes, DDNS update

is sent to the specified DDNS service provider. OfficeConnect Gigabit VPN

Firewall should be configured with the DDNS username and password that are

obtained from the DDNS service provider.

10.1 DDNS Configuration Parameters

Table 10.1 describes the configuration parameters available for DDNS service.

Table 10.1 DDNS Configuration Parameters

Field

Description

1 2 ... 58 59 60 61 62 63 64 65 66 67 68 ... 155 156

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HP OfficeConnect Firewall Series Instrukcja Użytkownika Strona 63