Page 125 - DCAP602_NETWORK_OPERATING_SYSTEMS_I

Unit 6: Domain Name System

login=bgates notes
password=luvlinux
your-debian-box-hostname.dyndns.org

Note that this file point to the ppp0 (dialup modem) interface was entered during the installation
rather than the ‘eth0’ that you would use for a network card.
If your server is behind a cable/DSL router (such as a Linksys, DLink, or Netgear) or a few other
type of firewall or proxy server, replace the line:
use=if, if=ppp0
with the line:
use=web, web=checkip.dyndns.com/, web-skip=’ Current IP Address:’

Note This basically uses a page on dyndns.org’s Web site to display your ‘outside’
IP address. The ddclient software will read the IP address off the returned HTML code.

installing ddclient

Before installing this package is sure to sign up for an account with EasyDNS or dyndns.org.
You’ll require your account username and password when you install the package. With your
account set up you install the package by typing in apt-get install ddclient at the shell prompt.
You’ll then be prompted for the following:
1. Select the service you want to use.
2. The next screen may appear confusing if you selected EasyDNS in Step 1 because it
prompts you for “your DynDNS fully qualified domain names” and then gives examples
for dyndns.org. What they mean by the “DynDNS” is “Dynamic DNS”, not “DynDNS.
org”. The “fully qualified” is also a bit misleading. You don’t need to enter a trailing period
after the TLD (.com, .net, or .org Top Level Domain). All you need to do is enter your
server’s hostname followed by your, or dyndns.org’s, domain name. Examples:
debian.gates.com
or
very-unique-hostname.dyndns.org

3. Enter the username you choose when you signed up with your service.
4. Enter the password you choose when you signed up with your service.
5. Enter the interface that will be connecting to the service. This will most likely be ‘eth0’ for
an ethernet card (even if it is connected to a LAN which has a firewall router) or ‘ppp0’ for
modem use (note that that’s a zero on the end, not the letter O).
6. If you entered ‘ppp0’ you’ll be requested if you want ddcleint to run automatically every
time you connect. You may want to select No here so you have the option of running it or
not.
7. You’ll then be asked if you want to run ddclient as a daemon. If this server is going to be
a full-time Web or e-mail server with a broadband connection you should answer Yes to
this.

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