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Added line to explain pointing reverse DNS lookups to internal server. #25462

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Merged
merged 2 commits into from
Oct 7, 2025
Merged

Added line to explain pointing reverse DNS lookups to internal server. #25462

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Added line to explain pointing reverse DNS lookups to internal server.
dledfordcf Sep 26, 2025
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ranbel Sep 29, 2025
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6 changes: 5 additions & 1 deletion ...connections/connect-devices/warp/configure-warp/route-traffic/local-domains.mdx
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Expand Up @@ -51,7 +51,11 @@ Local Domain Fallback configuration only impacts where DNS requests get resolved

The domain will no longer be excluded from Gateway DNS policies, effective immediately.

## Handling reverse DNS lookups for internal IPs.

By default Warp will send reverse DNS querys (IP to hostname) to public DNS servers, in order to resolve internal reverse DNS lookups a local domain fallback entry needs to be added for in-addr.arpa that points to your internal DNS server IP. in-addr.arpa is the "domain" used for reverse DNS queries, so adding a local domain fallback entry for this will send reverse DNS queries to your local DNS server.

## Related resources

- [Split Tunnels](/cloudflare-one/connections/connect-devices/warp/configure-warp/route-traffic/split-tunnels/) - Control which traffic goes through WARP by including or excluding specific IPs or domains.
- [WARP with firewall](/cloudflare-one/connections/connect-devices/warp/deployment/firewall/) - Learn which IPs, domains, and ports to allow so users can deploy and connect WARP successfully behind a firewall.
- [WARP with firewall](/cloudflare-one/connections/connect-devices/warp/deployment/firewall/) - Learn which IPs, domains, and ports to allow so users can deploy and connect WARP successfully behind a firewall.