Packet #2602796

Database ID:	2602796
Mesh Packet ID:	`0xf10198a8` Used for correlation across gateways
Timestamp:	2025-07-02 17:17:32 UTC
From Node:	Meshtastic 1cc8 (1cc8)
To Node:	!00000001 (0001)
Success:	Processed
Protocol:	NEIGHBORINFO_APP Port: 71

Gateway:	Meshtastic 1cc8 (1cc8)
Channel:	LongFast
RSSI:	Unknown
SNR:	Unknown
Hop Info:	0/4 hops Start: 4, Limit: 4

Reporting Node:	Meshtastic 1cc8 (1cc8)
Last Sent By:	Meshtastic 1cc8 (1cc8)
Broadcast Interval:	14400 seconds
Neighbors Found:	4

Neighbor Node	SNR	Last Heard	Broadcast Interval	Signal Quality
!366892d9 (92d9)	-6.0 dB	Unknown	Unknown	Poor
EA2EZK (2EZK)	-14.8 dB	Unknown	Unknown	Poor
EA2FER-2-CL-868-b174 (2FER)	-5.5 dB	Unknown	Unknown	Poor
!91b11676 (1676)	-15.8 dB	Unknown	Unknown	Poor

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:	67 bytes
Gateway:	!a0cb1cc8
Channel:	LongFast
Payload Type:	NEIGHBORINFO_APP
Hop Count:	Unknown / 4

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

MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

Field	Value
`gateway_id`	`!a0cb1cc8` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (67 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`2697665736` Source node ID	uint32
`to`	`1` Target node ID	uint32
`decoded.portnum`	`71` NEIGHBORINFO_APP	enum
`decoded.payload_length`	`67` bytes	size
`hop_limit`	`4` Remaining hops allowed	uint32
`hop_start`	`4` Initial hop limit	uint32
`hops_taken`	`0` Calculated: hop_start - hop_limit	derived
`rx_rssi`	Not set	int32
`rx_snr`	Not set	float
`rx_time`	`1751476651` Receive timestamp	fixed32
`via_mqtt`	False Direct LoRa transmission	bool
`want_ack`	False No ACK requested	bool
`priority`	`10` Packet priority level	enum
`delayed`	Not set	enum
`channel`	Not set	uint32
`pki_encrypted`	False Standard encryption	bool
`next_hop`	Not set	uint32
`relay_node`	`200` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1751476652.0019786` 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

MQTT-Specific Fields

Gateway ID:	`!a0cb1cc8`
Zero Hop Policy:	Enabled Direct gateway connection

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	NEIGHBORINFO_APP
Size:	67 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "node_id": 2697665736, "last_sent_by_id": 2697665736, "node_broadcast_interval_secs": 14400, "neighbors": [ { "node_id": 912823001, "snr": -6.0, "last_rx_time": null, "node_broadcast_interval_secs": null, "last_rx_time_str": "Unknown", "node_name": "!366892d9" }, { "node_id": 3522690738, "snr": -14.75, "last_rx_time": null, "node_broadcast_interval_secs": null, "last_rx_time_str": "Unknown", "node_name": "EA2EZK (2EZK)" }, { "node_id": 2224796020, "snr": -5.5, "last_rx_time": null, "node_broadcast_interval_secs": null, "last_rx_time_str": "Unknown", "node_name": "EA2FER-2-CL-868-b174 (2FER)" }, { "node_id": 2444301942, "snr": -15.75, "last_rx_time": null, "node_broadcast_interval_secs": null, "last_rx_time_str": "Unknown", "node_name": "!91b11676" } ], "neighbor_count": 4, "node_name": "Meshtastic 1cc8 (1cc8)", "last_sent_by_name": "Meshtastic 1cc8 (1cc8)" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!a0cb1cc8", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 2697665736, "to": 1, "id": 4043413672, "rx_time": 1751476651, "rx_snr": 0.0, "rx_rssi": 0, "hop_limit": 4, "hop_start": 4, "via_mqtt": 0, "want_ack": 0, "priority": 10, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 200, "tx_after": 0, "decoded": { "portnum": 71, "payload": "08c8b9ac860a10c8b9ac860a18c070220b08d9a5a2b303150000c0c0220b08b2fddf8f0d1500006cc1220b08f4e2eea408150000b0c0220b08f6acc48d091500007cc1", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "node_id": 2697665736, "last_sent_by_id": 2697665736, "node_broadcast_interval_secs": 14400, "neighbors": [ { "node_id": 912823001, "snr": -6.0 }, { "node_id": 3522690738, "snr": -14.75 }, { "node_id": 2224796020, "snr": -5.5 }, { "node_id": 2444301942, "snr": -15.75 } ], "type": "protobuf", "portnum": "NEIGHBORINFO_APP", "message_class": "NeighborInfo" } } } }

Raw Packet Data (67 bytes)

08c8b9ac860a10c8b9ac860a18c070220b08d9a5a2b303150000c0c0220b08b2fddf8f0d1500006cc1220b08f4e2eea408150000b0c0220b08f6acc48d091500007cc1

Hex Analysis:

Size:	67 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.

Packet #2602796 Success

Packet Information

Payload Data

Decoded Data:

Neighbor Information Report

4

Neighbor Details