Allow or Block DNS Resolution to Domains

Use the block list and allow list functionality to make granular block and allow settings in a Securd security policy.

Block and allow domain options

  • Block site at the hostname, domain or tld level – Blocked hosts or domains will be immediately blocked with no additional processing.
  • Allow site at the hostname, domain or tld level – Allow hosts or domains to never be blocked and override all security policy settings.

Step 1: Review your security policy

In the Securd policy editor, administrators need to be familiar with the active allow/block policies lists that are mapped to a security policy. Modifying the policy lists will be immediately applied to policy that is mapped to your sites, agents and browser deployment.

Step 2: Choose a block or allow list to modify

Chose a domain list that you want to edit. Allow lists are highlighted in green. Block lists are highlighted in red. You can also create a new list if you chose. Make sure the new list is mapped to a policy as in Step 1.

Step 3: Add domains to your block or allow list

In the policy list editor, add a host name or domain that you wish to block or allow. In this example, we will block access to Since the policy is mapped to your default security policy (as displayed in Step 1), when you hit “Save” the domain will be immediately start to be blocked.

Step 4: Verify block or allow by visiting a listed domain

To verify your policy list change, browse to the example domain. Instead of being able to access the domain, you will be presented a Securd block page. The block page will also have a reason displayed why the page was blocked.