Packet #4064462 Success

NODEINFO_APP packet from Cerdanyola Lab -CL-8 (CVL1) to !ffffffff

6
Total Receptions
6
Unique Gateways
2
Hop Count
85
Payload Bytes
Packet Information
Database ID: 4064462
Mesh Packet ID: 0xd0a3efdc
Used for correlation across gateways
Timestamp: 2025-07-18 17:32:20 UTC
From Node: Cerdanyola Lab -CL-8 (CVL1)
To Node: !ffffffff (ffff)
Success: Processed
Protocol: NODEINFO_APP
Port: 4
Gateway: Meshtastic 17c0 (17c0)
Channel: LongFast
RSSI: -131 dBm
SNR: -10.5 dBm
Hop Info: 2/3 hops
Start: 3, Limit: 1
Payload Data
Protocol: NODEINFO_APP
Size: 85 bytes
Decoded: Yes
Decoded Data:
Long Name:Cerdanyola Lab -CL-8
Short Name:CVL1
Node ID:!04d75494
MAC Address:4PcE11SU
Hardware:NRF52_PROMICRO_DIY
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:85 bytes
Gateway:!6c7417c0
Channel:LongFast
Payload Type:NODEINFO_APP
Hop Count:2 / 3
Privacy Summary
Exposure Level:
Broadcast
Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ Gateway node ID tracked
Exposure Risks:
⚠ Visible to all nodes on channel
⚠ Default channel - no encryption
+ 3 more...
MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

FieldValue
gateway_id !6c7417c0
Node ID format
channel_id LongFast
Default public channel
packet MeshPacket (85 bytes)
Contains the actual mesh network packet
MeshPacket Fields

Core mesh packet with routing and payload information

FieldValueType
from 81220756
Source node ID 		uint32
to 4294967295 (Broadcast)
Visible to all nodes 		uint32
decoded.portnum 4
NODEINFO_APP 		enum
decoded.payload_length 85 bytes size
hop_limit 1
Remaining hops allowed 		uint32
hop_start 3
Initial hop limit 		uint32
hops_taken 2
Calculated: hop_start - hop_limit 		derived
rx_rssi -131.0 dBm
Signal strength at gateway 		int32
rx_snr -10.50 dB
Signal quality at gateway 		float
rx_time 1752859939
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 Not set uint32
tx_after Not set uint32
timestamp 1752859940.5477445
Unix timestamp 		uint32
MQTT Privacy & Exposure Analysis

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

Exposure Level: Broadcast
Privacy Features:
  • ✓ Direct LoRa transmission (not via MQTT)
  • ✓ Gateway node ID tracked
Exposure Risks:
  • ⚠ Visible to all nodes on channel
  • ⚠ Default channel - no encryption
  • ⚠ Packet visible to MQTT subscribers
  • ⚠ Multi-hop path visible (2 hops)
  • ⚠ RF signal metrics exposed (location inference possible)
MQTT-Specific Fields
Gateway ID: !6c7417c0
Signal Metrics: RSSI: -131.0 dBm
SNR: -10.50 dB
Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:
Protocol:NODEINFO_APP
Size:85 bytes
Decoded: Yes
Complete Payload Data (JSON):
{ "id": "!04d75494", "long_name": "Cerdanyola Lab -CL-8", "short_name": "CVL1", "macaddr": "4PcE11SU", "hw_model": "NRF52_PROMICRO_DIY" }
Complete Protobuf Decode (JSON)
{ "service_envelope": { "gateway_id": "!6c7417c0", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 81220756, "to": 4294967295, "id": 3500404700, "rx_time": 1752859939, "rx_snr": -10.5, "rx_rssi": -131, "hop_limit": 1, "hop_start": 3, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 0, "tx_after": 0, "decoded": { "portnum": 4, "payload": "0a09213034643735343934121443657264616e796f6c61204c6162202d434c2d381a0443564c312206e0f704d75494283f38014220b692cf8aed78c748fc30b1ae5f89c47b048b7aa7029ee126cdf7e721832d5348", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!04d75494", "long_name": "Cerdanyola Lab -CL-8", "short_name": "CVL1", "macaddr": "4PcE11SU", "hw_model": "NRF52_PROMICRO_DIY", "role": "CLIENT_MUTE", "public_key": "tpLPiu14x0j8MLGuX4nEewSLeqcCnuEmzffnIYMtU0g=", "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }
Raw Packet Data (85 bytes)
0a09213034643735343934121443657264616e796f6c61204c6162202d434c2d381a0443564c312206e0f704d75494283f38014220b692cf8aed78c748fc30b1ae5f89c47b048b7aa7029ee126cdf7e721832d5348
Hex Analysis:
Size:85 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
Meshtastic 17c0 (17c0) Primary 0.000s
Reference 		-131.0 dBm -10.50 dB 2 LongFast 2025-07-18 17:32:20 Current
Meshtastic 72c0 (72c0) +0.127s
After 		Unknown Unknown 3 LongFast 2025-07-18 17:32:20 View
MontcadaCentro-CL-868🗼🌐 (d9e8) +1.263s
After 		-107.0 dBm -8.25 dB 3 LongFast 2025-07-18 17:32:21 View
EB3FWC-Girona📡-GW-868 (EB3F) +1.345s
After 		-88.0 dBm 2.25 dB 3 LongFast 2025-07-18 17:32:21 View
CV-Oriol-GW-8 📡 (CVO2) +2.037s
After 		-102.0 dBm 4.00 dB 3 LongFast 2025-07-18 17:32:22 View
IOQ-CL-868 (IOQ3) +2.784s
After 		-35.0 dBm 6.00 dB 3 LongFast 2025-07-18 17:32:23 View
6

Total Receptions

6

Unique Gateways