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9.5 Communication via the network
Ports and protocols used by the DEHNrecord SD for communication via the network
Internal Communication
Port Protocol Description/Example
53 DNS Resolve network name “DRC-SD serial number“
80 HTTP Communication to the web server
123 NTP Time synchronization
502 Modbus Modbus/TCP-Communication
67/68 DHCP Obtain IP address via DHCP
161 SNMP Registration of the device e.g. in Windows Explorer to access the web server from there
ICMP For ping command
External Communication
Port Protocol Description/Example
443 HTTPS
Communication to the target system (Azure, Cloud)
8883 MQTT/TLS
9. Functionality – Measured values
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