How to Block Multiple Subdomains
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Created On 09/25/18 17:51 PM - Last Modified 07/19/22 23:07 PM
Resolution
This document describes how to block multiple subdomains using a wildcard character.
Details
Subdomains can be blocked using URL Filtering (which requires a license).
To block multiple subdomains:
- Add the sites into the Block List of a URL Filtering profile. Examples of entry format: *.office365.com or *office365.com.
Note: Alternatively, custom URL categories can be created with the action set to block.
- Apply the configured URL Filtering profile to the appropriate security rule.
Multiple sub-domains cannot be blocked using a wildcard symbol in FQDN address objects, as wildcards are not allowed for use in those objects.
owner: ukhapre