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ntopng

Overview

ntopng is a web-based network traffic analysis tool: it shows hosts, flows, applications and throughput on the interface it listens to. Uses the official image ntop/ntopng (Community edition without a license). Requires a Redis container on this server that publishes port 6379, for example the Redis app from Community Apps. ntopng keeps its users and settings in Redis. The image's own internal Redis cannot save on Unraid, so without an external Redis every restart or update resets them. All options are in ntopng options: -i is the interface to monitor (br0 on most Unraid servers), -w the web port, -r the Redis server and database number, -m your local networks. Host networking is needed to see the server's traffic. Default login: admin / admin, ntopng asks for a new password at the first login.

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ntopng for Unraid

ntopng is a web-based network traffic analysis tool. Template: ntopng.xml, image: ntop/ntopng (official, Community edition without a license).

Redis is required

ntopng keeps its users, passwords and settings in Redis. The official image starts its own Redis inside the container, but that Redis runs as an unprivileged user and cannot save into an Unraid appdata folder. Without an external Redis, every restart or update resets ntopng to admin/admin with default settings.

So run a Redis container first, for example the Redis app from Community Apps, publishing port 6379. ntopng reaches it as 127.0.0.1:6379 because it uses host networking. The @3 in -r 127.0.0.1:6379@3 selects Redis database 3; pick a number no other app uses (many apps use 0 and 1).

Options

Everything is set in ntopng options (variable NTOP_CONFIG):

Option	Default	Meaning
`-i`	`br0`	Interface to monitor. `br0` on most Unraid servers; `eth0` or `bond0` without bridging. Repeat `-i` for several.
`-w`	`3000`	Web port. With host networking it must be free on the server; change the WebUI link too.
`-r`	`127.0.0.1:6379@3`	Redis `host:port@database`.
`-m`	private ranges	Local networks, comma-separated, no spaces or quotes.

Don't use quotes in the options: the image passes them on literally.

The template adds --cap-add=NET_ADMIN --cap-add=NET_RAW. Without them ntopng logs "Unable to enable capabilities".

First login

Open http://<server>:3000, log in as admin / admin and set a new password when asked.

Support

Template problems: issues
ntopng itself: ntop/ntopng

Requirements

A Redis container on this server publishing port 6379 (for example the Redis app from Community Apps).

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Links

Projectntop.org Supportgithub.com Docker Hubhub.docker.com Templateraw.githubusercontent.com

Details

Repository

ntop/ntopng:latest

Registry

https://hub.docker.com/r/ntop/ntopng/

Last Updated2026-10-04

First Seen2022-10-28

Runtime arguments

Web UI: http://[IP]:[PORT:3000]/
Network: host
Shell: bash
Privileged: false
Extra Params: --cap-add=NET_ADMIN --cap-add=NET_RAW

Template configuration

ntopng optionsVariable

Command line options. -i interface to monitor, -w web port (also change the WebUI link), -r Redis host:port@database (pick a database number no other app uses), -m local networks, comma-separated without spaces or quotes.

Target: NTOP_CONFIG
Default: -i br0 -w 3000 -r 127.0.0.1:6379@3 -m 10.0.0.0/8,172.16.0.0/12,192.168.0.0/16
Value: -i br0 -w 3000 -r 127.0.0.1:6379@3 -m 10.0.0.0/8,172.16.0.0/12,192.168.0.0/16

DataPathrw

Time series and runtime data. ntopng changes the owner of this folder itself.

Target: /var/lib/ntopng
Default: /mnt/user/appdata/ntopng/data
Value: /mnt/user/appdata/ntopng/data

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