The following endpoints need to be allow-listed:
MQTT
mqtts://mqtt.connectivity.siemens.com:443
Firmware Update Service
https://ota-update.connectivity.siemens.com:443
https://s3-eu-west-1.amazonaws.com:443
Container Image Registry
https://registry.connectivity.siemens.com:443 https://registry.horizoncloud.io:443
Bootstrap
https://bootstrap.connectivity.siemens.com:443 https://bootstrap.siemens.com:443
Authentication Proxy
https://proxy.connectivity.siemens.com:443
NTP Server
0.siemens.pool.ntp.org:123(TCP/UDP) (Main Server)
1.siemens.pool.ntp.org:123(TCP/UDP) (Backup Server)
2.siemens.pool.ntp.org:123(TCP/UDP) (Backup Server)
3.siemens.pool.ntp.org:123(TCP/UDP) (Backup Server)