WatchYourLAN

Lightweight network IP scanner with web GUI. Features:

• Send notification when new host is found
• Monitor hosts online/offline history
• Keep a list of all hosts in the network
• Send data to InfluxDB2 to make a Grafana dashboard

More screenshots

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Quick start

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Replace $YOURTIMEZONE with correct time zone and $YOURIFACE with network interface you want to scan. Network mode must be host. Set $DOCKERDATAPATH for container to save data:

docker run --name wyl \
	-e "IFACES=$YOURIFACE" \
	-e "TZ=$YOURTIMEZONE" \
	--network="host" \
	-v $DOCKERDATAPATH/wyl:/data/WatchYourLAN \
    aceberg/watchyourlan

Web GUI should be at http://localhost:8840

Auth

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WatchYourLAN does not have built-in auth option. But you can use it with SSO tools like Authelia, or my simple auth app ForAuth.
Here is an example docker-compose-auth.yml.

⚠️ WARNING!
Please, don't forget that WYL needs host network mode to work. So, WYL port will be exposed in this setup. You need to limit access to it with firewall or other measures.

Install on Linux

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All binary packages can be found in latest release. There are .deb, .rpm, .apk (Alpine Linux) and .tar.gz files.

Supported architectures: amd64, i386, arm_v5, arm_v6, arm_v7, arm64.
Dependencies: arp-scan, tzdata.

For amd64 there is a deb repo available

Config

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Configuration can be done through config file, GUI or environment variables. Variable names is config_v2.yaml file are the same, but in lowcase.

Basic config

Variable	Description	Default
TZ	Set your timezone for correct time
HOST	Listen address	0.0.0.0
PORT	Port for web GUI	8840
THEME	Any theme name from https://bootswatch.com in lowcase or additional	sand
COLOR	Background color: light or dark	dark
NODEPATH	Path to local node modules
SHOUTRRR_URL	WatchYourLAN uses Shoutrrr to send notifications. It is already integrated, just needs a correct URL. Examples for Discord, Email, Gotify, Matrix, Ntfy, Pushover, Slack, Telegram, Generic Webhook and etc are here

Scan settings

Variable	Description	Default
IFACES	Interfaces to scan. Could be one or more, separated by space. See docs/VLAN_ARP_SCAN.md.
TIMEOUT	Time between scans (seconds)	120
ARP_ARGS	Arguments for arp-scan. Enable debug log level to see resulting command. (Example: -r 1). See docs/VLAN_ARP_SCAN.md.
ARP_STRS ARP_STRS_JOINED	See docs/VLAN_ARP_SCAN.md.
LOG_LEVEL	Log level: debug, info, warn or error	info
TRIM_HIST	Remove history after (hours)	48
HIST_IN_DB	Store History in DB - if false, the History will be stored only in memory and will be lost on app restart. Though, it will keep the app DB smaller (and InfluxDB is recommended for long term History storage)	false
USE_DB	Either sqlite or postgres	sqlite
PG_CONNECT	Address to connect to PostgreSQL. (Example: postgres://username:password@192.168.0.1:5432/dbname?sslmode=disable). Full list of URL parameters here

InfluxDB2 config

This config matches Grafana's config for InfluxDB data source

Variable	Description	Default	Example
INFLUX_ENABLE	Enable export to InfluxDB2	false	true
INFLUX_SKIP_TLS	Skip TLS Verify	false	true
INFLUX_ADDR	Address:port of InfluxDB2 server		https://192.168.2.3:8086/
INFLUX_BUCKET	InfluxDB2 bucket		test
INFLUX_ORG	InfluxDB2 org		home
INFLUX_TOKEN	Secret token, generated by InfluxDB2

Config file

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Config file name is config_v2.yaml. Example:

arp_args: ""
color: dark
hist_in_db: false
host: 0.0.0.0
ifaces: enp4s0
influx_addr: ""
influx_bucket: ""
influx_enable: false
influx_org: ""
influx_skip_tls: false
influx_token: ""
log_level: info
nodepath: ""
pg_connect: ""
port: "8840"
shoutrrr_url: "gotify://192.168.0.1:8083/AwQqpAae.rrl5Ob/?title=Unknown host detected&DisableTLS=yes"
theme: sand
timeout: 60
trim_hist: 48
use_db: sqlite

Options

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Key	Description	Default
-d	Path to config dir	/data/WatchYourLAN
-n	Path to node modules (see below)

Local network only

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By default, this app pulls themes, icons and fonts from the internet. But, in some cases, it may be useful to have an independent from global network setup. I created a separate image with all necessary modules and fonts. Run with Docker:

docker run --name node-bootstrap          \
    -p 8850:8850                          \
    aceberg/node-bootstrap

docker run --name wyl \
	-e "IFACES=$YOURIFACE" \
	-e "TZ=$YOURTIMEZONE" \
	--network="host" \
	-v $DOCKERDATAPATH/wyl:/data/WatchYourLAN \
    aceberg/watchyourlan -n "http://$YOUR_IP:8850"

Or use docker-compose

API & Integrations

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API

Moved to docs/API.md

Integrations

• Python API client by drwahl

Thanks

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• All go packages listed in dependencies
• Favicon and logo: Access point icons created by Freepik - Flaticon
• Bootstrap
• Themes: Free themes for Bootstrap