Packet #336195

Database ID:	336195
Mesh Packet ID:	`0x03f7424c` Used for correlation across gateways
Timestamp:	2026-01-08 01:17:11 UTC
From Node:	Saryarka 868 (s868)
To Node:	!ffffffff (ffff)
Success:	Processed
Protocol:	NODEINFO_APP Port: 4

Gateway:	MegaTowers 868mhz (MEGA)
Channel:	LongSlow
RSSI:	-128 dBm
SNR:	-21.25 dBm
Hop Info:	0/7 hops Start: 7, Limit: 7

Long Name:	Saryarka 868
Short Name:	s868
Node ID:	!9e76b864
MAC Address:	8J6edrhk
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:	77 bytes
Gateway:	!02e59680
Channel:	LongSlow
Payload Type:	NODEINFO_APP
Hop Count:	Unknown / 7

Privacy Summary

Exposure Level:
Broadcast

Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ Custom channel: LongSlow
+ 2 more...

Exposure Risks:
⚠ Visible to all nodes on channel
⚠ Packet visible to MQTT subscribers
+ 1 more...

MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

Field	Value
`gateway_id`	`!02e59680` Node ID format
`channel_id`	`LongSlow`
`packet`	`MeshPacket` (77 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`2658580580` Source node ID	uint32
`to`	`4294967295` (Broadcast) Visible to all nodes	uint32
`decoded.portnum`	`4` NODEINFO_APP	enum
`decoded.payload_length`	`77` bytes	size
`hop_limit`	`7` Remaining hops allowed	uint32
`hop_start`	`7` Initial hop limit	uint32
`hops_taken`	`0` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-128.0` dBm Signal strength at gateway	int32
`rx_snr`	`-21.25` dB Signal quality at gateway	float
`rx_time`	`1767817029` 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`	`100` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1767817031.1078248` 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)
✓ Custom channel: LongSlow
✓ Gateway node ID tracked
✓ Zero-hop: direct from source to MQTT gateway

Exposure Risks:

⚠ Visible to all nodes on channel
⚠ Packet visible to MQTT subscribers
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Gateway ID:	`!02e59680`
Zero Hop Policy:	Enabled Direct gateway connection
Signal Metrics:	RSSI: -128.0 dBm SNR: -21.25 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	NODEINFO_APP
Size:	77 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "id": "!9e76b864", "long_name": "Saryarka 868", "short_name": "s868", "macaddr": "8J6edrhk", "hw_model": "HELTEC_V3" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!02e59680", "channel_id": "LongSlow", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 2658580580, "to": 4294967295, "id": 66536012, "rx_time": 1767817029, "rx_snr": -21.25, "rx_rssi": -128, "hop_limit": 7, "hop_start": 7, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 100, "tx_after": 0, "decoded": { "portnum": 4, "payload": "0a09213965373662383634120c5361727961726b61203836381a04733836382206f09e9e76b864282b42206f2eab583440f724423799284d3a45868e494c8ed34c63dafb88a7b746a408764800", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!9e76b864", "long_name": "Saryarka 868", "short_name": "s868", "macaddr": "8J6edrhk", "hw_model": "HELTEC_V3", "public_key": "by6rWDRA9yRCN5koTTpFho5JTI7TTGPa+4int0akCHY=", "is_unmessagable": false, "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }

Raw Packet Data (77 bytes)

0a09213965373662383634120c5361727961726b61203836381a04733836382206f09e9e76b864282b42206f2eab583440f724423799284d3a45868e494c8ed34c63dafb88a7b746a408764800

Hex Analysis:

Size:	77 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 #336195 Success

Packet Information

Payload Data

Decoded Data: