Setup > ddns, Ddns – Linksys E2100L User Manual
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Advanced Wireless-N Router
Linksys E2100L
Chapter 3: Advanced Configuration
Client Lease Time
The Client Lease Time is the amount
of time a network user will be allowed connection to the 
Router with their current dynamic IP address . Enter the 
amount of time, in minutes, that the user will be “leased” 
this dynamic IP address . After the time is up, the user will 
be automatically assigned a new dynamic IP address, or 
the lease will be renewed . The default is 0 minutes, which 
means one day .
Static DNS 1-3
The Domain Name System (DNS) is how
the Internet translates domain or website names into 
Internet addresses or Uniform Resource Locators (URLs) . 
Your ISP will provide you with at least one DNS Server IP 
Address . If you wish to use another, enter that IP Address in 
one of these fields . You can enter up to three DNS Server IP 
Addresses here . The Router will use these for quicker access 
to functioning DNS servers .
WINS
The Windows Internet Naming Service (WINS)
manages each computer’s interaction with the Internet . If 
you use a WINS server, enter that server’s IP address here . 
Otherwise, leave this blank .
Time Settings
Time Setting
Time Zone
Select the time zone in which your network
functions from this drop-down menu .
Automatically adjust clock for daylight saving 
changes 
Select this option to have the Router
automatically adjust for daylight saving time .
Click Save Settings to apply your changes, or click Cancel 
Changes to clear your changes .
Setup > DDNS
The Router offers a Dynamic Domain Name System (DDNS) 
feature . DDNS lets you assign a fixed host and domain 
name to a dynamic Internet IP address . It is useful when 
you are hosting your own website, File Transfer Protocol 
(FTP) server, or other server behind the Router . 
Before you can use this option, you need to sign 
up for DDNS service with a DDNS service provider, 
www.dyndns.org or www.tzo.com . If you do not want to 
use this option, keep the default, Disabled .
DDNS
DDNS Service
If your DDNS service is provided by DynDNS .org, then 
select DynDNS.org from the drop-down menu . If your 
DDNS service is provided by TZO, then select TZO.com . 
The features available on the DDNS screen will vary, 
depending on which DDNS service provider you use . 
DynDNS .org
Setup > DDNS > DynDNS
Username
Enter the Username for your DDNS account .
Password
Enter the Password for your DDNS account .
Host Name
The DDNS URL assigned by the DDNS service
is displayed .
System
Select the DynDNS service you use: Dynamic,
Static, or Custom . The default selection is Dynamic .
Mail Exchange (Optional)
Enter the address of your mail
exchange server, so emails to your DynDNS address go to 
your mail server .
Backup MX
This option allows the Mail eXchange (MX)
server to be a backup . To disable this option, keep the 
default, Disabled . To enable the option, select Enabled . If 
you are not sure which setting to select, keep the default, 
Disabled .
Wildcard
This setting enables or disables wildcards
for your host . For example, if your DDNS address is 
myplace.dyndns.org and you enable wildcards, then 
x.myplace.dyndns.org will work as well (x is the wildcard) . 
To disable wildcards, keep the default, Disabled . To 
enable wildcards, select Enabled . If you are not sure 
which setting to select, keep the default, Disabled .
Internet IP Address
The Router’s Internet IP address is
displayed here . Because it is dynamic, it will change .
Status
The status of the DDNS service connection is
displayed .
Update
To manually trigger an update, click Update .
Click Save Settings to apply your changes, or click Cancel 
Changes to clear your changes .
