Getting Started
Polling intervals and rate limits
Choose a safe firewall refresh interval for Cybora feeds and avoid unnecessary polling or rate-limit issues.
Last updated: June 15, 2026
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Firewalls usually refresh external lists on a schedule. The refresh interval should be aligned with your Cybora plan and with the firewall vendor’s recommended behavior.
Recommended approach
Use the closest available interval that is equal to or slower than your plan update frequency. If a plan updates every hour, configure the firewall to poll hourly or less frequently. Polling every minute will not produce fresher data and may trigger abuse protection.
Why rate limits exist
Rate limits protect feed delivery for all customers. A firewall that polls too aggressively consumes unnecessary resources and can look like leaked-key or scripted abuse.
High availability clusters
In HA environments, verify whether both nodes poll independently. Some platforms synchronize external list data, while others let every node fetch the URL itself. If both nodes poll, account for that when choosing an interval.
Validation
After configuring polling:
- Confirm that the first fetch succeeds.
- Check the firewall’s last-updated timestamp.
- Wait for one refresh interval.
- Confirm that the timestamp changes without manual intervention.
- Review firewall logs for authentication or download errors.
If the firewall supports a manual refresh button, use it sparingly during setup and avoid repeated refresh loops.