Nortel Networks 4050 manual Exclude List

Chapter 9 Customizing the portal and user logon 387

•redirects client requests to an authentication page served by the portal

The DHCP server must be configured to assign the portal Virtual IP address (pVIP) as the DNS server when the client is in the Red VLAN.

The DHCP server is configured to specify the regular DNS servers for the scopes for the Green and Yellow VLANs. Once the client has been authenticated and is in a Green or Yellow VLAN, DNS requests are forwarded in the regular way to the corporate DNS servers.

For information about configuring the captive portal, see “Configuring the captive portal using the CLI” on page 400 or “Configuring the captive portal using the SREM” on page 416.

Exclude List

The Exclude List is a configurable list of domain names that will not be captured by the Nortel SNAS 4050. The DNS server in the captive portal forwards requests for domain names in the Exclude List directly to the corporate DNS servers.

In order to speed up client logon, add to the Exclude List any domain names for URLs that are routinely accessed during client logon or startup sequences. The Exclude List entry can be the full domain name or an expression.

By default, the captive portal Exclude List includes the following:

•windowsupdate

This will match all automatic Windows update domain names used by browsers, for example:

•windowsupdate.com

•windowsupdate.microsoft.com

•download.windowsupdate.microsoft.com

For information about configuring the Exclude List, see “Configuring the Exclude List using the CLI” on page 401 or “Configuring the DNS Exclude List using the SREM” on page 418.

Nortel Secure Network Access Switch 4050 User Guide