Creating DNS Whitelists

A DNS whitelist is used in conjunction with a captive portal to provide access services to wireless clients. Use the whitelist to create a set of allowed destination IP addresses within the captive portal. To effectively host hotspot pages on an external Web server, the IP address of the destination Web server(s) should be in the whitelist.

To define the whitelist:

  1. Select Configuration > Services .
    The upper, left-hand, side of the user interface displays a Services menu pane where Captive Portal, DHCP and RADIUS configuration options can be selected.
  2. Select Captive Portals.
    The Captive Portal screen displays the configurations of existing policies. New policies can be created, existing policies can be modified or existing policies deleted.
  3. Select DNS Whitelist.
    The DNS Whitelist screen displays.
  4. Review the names of existing whitelists. Click Add to create a new whitelist entry, or select an existing whitelist and click Edit to modify it.
  5. Use the DNS Whitelist parameter to create a set of allowed destination IP addresses.
    To effectively host pages on an external Web server, the IP address of the destination Web server(s) should be in the whitelist.
  6. Refer to the drop-down menu of existing whitelist entries to select a policy to be applied to this captive portal policy.
    If no entries exist, select the Create or Edit icons and do the following:
    1. If creating a new whitelist, assign it a name up to 32 characters.
      Select the + Add Row button to populate the whitelist with Host and IP Index values.
    2. Provide a Hostname or numeric IPv4 Address or IPv6 Address within the DNS Entry parameter for each destination IP address or host included in the whitelist. .
      IPv6 formatted addresses are composed of eight groups of four hexadecimal digits separated by colons
    3. Use the Match Suffix parameter to match any hostname or domain name as a suffix.
      The default setting is disabled.
    4. If necessary, select the radio button of an existing whitelist entry and select the - Delete icon to remove the entry from the whitelist.