Packet #2143459 Success

NODEINFO_APP packet from Zaphod B 02 (Z02) to !b03c7e38

2
Total Receptions
2
Unique Gateways
0
Hop Count
75
Payload Bytes
Packet Information
Database ID: 2143459
Mesh Packet ID: 0x1cfa6cf3
Used for correlation across gateways
Timestamp: 2025-08-12 19:04:32 UTC
From Node: Zaphod B 02 (Z02)
To Node: !b03c7e38 (7e38)
Success: Processed
Protocol: NODEINFO_APP
Port: 4
Gateway: Deventer-Oost (devO)
Channel: LongFast
RSSI: -112 dBm
SNR: 6.5 dBm
Hop Info: 0/3 hops
Start: 3, Limit: 3
Payload Data
Protocol: NODEINFO_APP
Size: 75 bytes
Decoded: Yes
Decoded Data:
Long Name:Zaphod B 02
Short Name:Z02
Node ID:!ba6a8678
MAC Address:ECC6aoZ4
Hardware:HELTEC_V3
Raw Packet Analysis
Complete field breakdown and MQTT privacy/exposure analysis
Packet Structure
MQTT Packet Flow:
ServiceEnvelope (MQTT layer) → MeshPacket (Mesh layer) → Decoded Payload (Application data)
Total Size:75 bytes
Gateway:!6c747844
Channel:LongFast
Payload Type:NODEINFO_APP
Hop Count:Unknown / 3
Privacy Summary
Exposure Level:
Direct Message
Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ Targeted to specific node
+ 2 more...
Exposure Risks:
⚠ Default channel - no encryption
⚠ Packet visible to MQTT subscribers
+ 1 more...
MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

FieldValue
gateway_id !6c747844
Node ID format
channel_id LongFast
Default public channel
packet MeshPacket (75 bytes)
Contains the actual mesh network packet
MeshPacket Fields

Core mesh packet with routing and payload information

FieldValueType
from 3127543416
Source node ID 		uint32
to 2956754488
Target node ID 		uint32
decoded.portnum 4
NODEINFO_APP 		enum
decoded.payload_length 75 bytes size
hop_limit 3
Remaining hops allowed 		uint32
hop_start 3
Initial hop limit 		uint32
hops_taken 0
Calculated: hop_start - hop_limit 		derived
rx_rssi -112.0 dBm
Signal strength at gateway 		int32
rx_snr 6.50 dB
Signal quality at gateway 		float
rx_time 2086012850
Receive timestamp 		fixed32
via_mqtt False
Direct LoRa transmission 		bool
want_ack False
No ACK requested 		bool
priority Not set enum
delayed Not set enum
channel Not set uint32
pki_encrypted False
Standard encryption 		bool
next_hop Not set uint32
relay_node 120
Relay node ID 		uint32
tx_after Not set uint32
timestamp 1755018272.7980804
Unix timestamp 		uint32
MQTT Privacy & Exposure Analysis

Analysis of privacy features and exposure risks when packet is shared via MQTT

Exposure Level: Direct Message
Privacy Features:
  • ✓ Direct LoRa transmission (not via MQTT)
  • ✓ Targeted to specific node
  • ✓ Gateway node ID tracked
  • ✓ Zero-hop: direct from source to MQTT gateway
Exposure Risks:
  • ⚠ Default channel - no encryption
  • ⚠ Packet visible to MQTT subscribers
  • ⚠ RF signal metrics exposed (location inference possible)
MQTT-Specific Fields
Gateway ID: !6c747844
Zero Hop Policy: Enabled
Direct gateway connection
Signal Metrics: RSSI: -112.0 dBm
SNR: 6.50 dB
Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:
Protocol:NODEINFO_APP
Size:75 bytes
Decoded: Yes
Complete Payload Data (JSON):
{ "id": "!ba6a8678", "long_name": "Zaphod B 02", "short_name": "Z02", "macaddr": "ECC6aoZ4", "hw_model": "HELTEC_V3" }
Complete Protobuf Decode (JSON)
{ "service_envelope": { "gateway_id": "!6c747844", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 3127543416, "to": 2956754488, "id": 486173939, "rx_time": 2086012850, "rx_snr": 6.5, "rx_rssi": -112, "hop_limit": 3, "hop_start": 3, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 120, "tx_after": 0, "decoded": { "portnum": 4, "payload": "0a09216261366138363738120b5a6170686f6420422030321a035a303222061020ba6a8678282b422048a2e05c9568216ef82a2dc3d6a2b5d5f2ef68702b7a4c019af1af0dd6808c2a4800", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!ba6a8678", "long_name": "Zaphod B 02", "short_name": "Z02", "macaddr": "ECC6aoZ4", "hw_model": "HELTEC_V3", "public_key": "SKLgXJVoIW74Ki3D1qK11fLvaHArekwBmvGvDdaAjCo=", "is_unmessagable": false, "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }
Raw Packet Data (75 bytes)
0a09216261366138363738120b5a6170686f6420422030321a035a303222061020ba6a8678282b422048a2e05c9568216ef82a2dc3d6a2b5d5f2ef68702b7a4c019af1af0dd6808c2a4800
Hex Analysis:
Size:75 bytes
Format:Protobuf (Protocol Buffers)
Encoding:Binary with varint and length-delimited fields
This is the raw protobuf-encoded payload as received from MQTT. The structure follows the Meshtastic protobuf schema definitions.
All Receptions
All gateways that received this packet
Correlation: Using Mesh Packet ID
Reception Locations

Loading reception map...

Map shows gateway locations that received this packet. Hop counts are displayed if available.
Gateway Time Offset RSSI SNR Hops Channel Timestamp Actions
Deventer-Oost (devO) Primary 0.000s
Reference 		-112.0 dBm 6.50 dB 0 LongFast 2025-08-12 19:04:32 Current
Zaphod B 02 (Z02) -1.769s
Before 		Unknown Unknown 0 LongFast 2025-08-12 19:04:31 View
2

Total Receptions

2

Unique Gateways