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StorTrends
FQDN Filtering
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Overview
zWAN edge devices support FQDN (Fully Qualified Domain Name) filtering, providing an extensive list of over 3,100 categorized websites that can be controlled for access through allowlist and blocklist settings.
Functionality
Administrators can override category-based blocklists or allowlists by manually configuring individual FQDNs. This flexibility enables administrators to explicitly allow or block a specific FQDN, regardless of its default category setting. To prevent conflicts, each FQDN is assigned to only one category, ensuring no overlap between categories where an FQDN might otherwise be allowed in one and blocked in another.
The full list of categorized FQDNs can be viewed under the FQDN Filter section:
Searching Custom FQDNs
Administrators can search for specific FQDNs by entering keywords in the search bar. Sorting options are not available due to the large size of the list.
Discovered IPs
When an FQDN is accessed, its associated IPs are dynamically discovered and displayed in the Discovered IPs section. These IPs can be utilized in Packet Steering and QoS configurations by setting the FQDN in the Destination Address. This feature allows for more precise network management based on the detected IPs of allowed or blocked FQDNs.
Packet Steering works by detecting the initial packet and directing it through the appropriate WAN interface:
FQDN Actions
Administrators can set actions for each FQDN, selecting from three options:
- DEFAULT: Uses the default action associated with the category to which the FQDN belongs.
- USER_ALLOW: Overrides to allow access to the specified FQDN or IP.
- USER_BLOCK: Overrides to block access to the specified FQDN or IP.
Action Icons
Icons represent the different FQDN actions:
- Default Allow:
- Default Block:
- User Allow:
- User Block:
This icon-based system offers a quick visual reference to understand which FQDNs are allowed or blocked, either by default or through user customization.
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