Answered on : 2024-01-23
To clear the DNS cache on a FortiGate firewall, follow these steps:
1. Open the terminal on the FortiGate device.
2. Run the command: `diag test app dnsproxy 1` [4].
- This command will clear the DNS cache on the FortiGate firewall [4].
Other useful DNS troubleshooting commands on FortiGate include:
- Show DNS statistics: `diag test app dnsproxy 2` [5].
- Dump DNS settings: `diag test app dnsproxy 3` [5].
- Reload FQDN: `diag test app dnsproxy 4` [5].
Make sure to use these commands responsibly, and refer to Fortinet's documentation for additional details [5] [6] [7].