Troubleshooting¶
Common issues and how to resolve them.
| Issue | What to Do |
|---|---|
| Legitimate traffic is being blocked | Check rule order — a higher rule may be catching the traffic before your Accept rule. Also check whether the default policy is Drop and you're missing an Accept rule for this traffic. |
| Rule doesn't seem to apply | Confirm you clicked Apply after editing. Staged changes don't take effect until applied. See Step 4 — Apply Your Changes. |
| Origin sees no return traffic for a service | If you're using stateful rules, make sure return traffic is covered (e.g., ESTABLISHED is included). Consider NEW + ESTABLISHED + RELATED for TCP services. |
| Can't match a non-TCP/UDP protocol | Use the All protocol option. It matches every IP-layer protocol regardless of port. |
| Default policy changed by mistake | Click Discard if you haven't applied yet. If already applied, set it back manually and click Apply. |
Need Help?¶
If you run into unexpected blocks or need help designing a firewall policy for a specific service, please reach out to GatewaySentry Support.