Gateway now supports maximum DNS TTL settings
Cloudflare Gateway now lets you set a maximum TTL for DNS responses, allowing policy changes like blocking malicious domains to take effect faster. You can configure this at the account level or per DNS location, and two new fields track original and applied TTLs in DNS logs.
You can now set a maximum time-to-live (TTL) for DNS responses returned by Gateway. When an upstream DNS record has a TTL that exceeds the configured maximum, Gateway caps it to your specified value. This ensures that DNS policy changes - such as blocking a newly identified malicious domain - take effect faster across all clients.
The setting is available at two levels:
- Account level - In Traffic Policies > Traffic Settings, under Proxy and inspection. This sets the default cap for all DNS locations.
- Per-location - Each DNS location can inherit the account setting, disable the cap, or override it with a custom value.
Two new fields are also available in DNS logs: upstream_record_ttls (the original TTL from the upstream response) and applied_max_ttl (the cap Gateway applied). These appear in the DNS logs column picker and in Logpush datasets.
For more information, refer to Maximum DNS TTL.
Source: original entry ↗
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