...
| Port | Transport | Protocol | Destination | Comment |
|---|---|---|---|---|
| 53 | UDP | DNS | * | |
| 123 | UDP | NTP | pool.ntp.org | Network time |
| 443 | TCP | HTTPS | * | Image+log uploads, software updates |
| 1194 | UDP | OpenVPN | 46.140.62.198 | Remote Maintenance (on demand) |
| 8140 | TCP | Puppet | foreman.yellow.webcam | Software updates current |
| 8883 | TCP | MQTT/TLS | broker.yellow.camera | Communication with yellow.webcam |
...