Install Configure

Overview of Ntopng

Ntopng is a robust, web-based tool for monitoring network traffic. It’s open-source and available for various platforms including Linux, Windows, and macOS. Ntopng offers a graphical interface that displays detailed analytics, traffic breakdowns, and bandwidth utilization. It’s an essential tool for understanding network flow and identifying potential issues.

Prerequisites

• A server running Debian 11 or Ubuntu 20.04
• Root or sudo user access

Installation on Debian 11

Step 1: Update Your System

Start by updating your system packages to ensure you have the latest versions:

sudo apt update -y && sudo apt upgrade -y

Step 2: Add the Ntopng Repository

Debian 11 does not include the Ntopng repository by default, so you’ll need to add it manually:

cd /opt
wget http://apt.ntop.org/buster/all/apt-ntop.deb
sudo dpkg -i apt-ntop.deb

Step 3: Install Ntopng

After adding the repository, update your package list again:

sudo apt update -y

Now, install Ntopng:

sudo apt install ntopng

Start and enable the Ntopng service to run at boot:

sudo systemctl start ntopng && sudo systemctl enable ntopng

Verify the service status:

sudo systemctl status ntopng

You should see output indicating that Ntopng is active and running.

Step 4: Configure Ntopng

Edit the Ntopng configuration file to set the network interface and web server port:

sudo nano /etc/ntopng/ntopng.conf

Add the following lines:

# Network interface
-i=1
# Web server port
-w=5000

Create a new file to specify local network ranges:

sudo nano /etc/ntopng/ntopng.start

Include the following configuration:

--local-networks "192.168.1.0/24"
--interface 1

Restart the Ntopng service:

sudo systemctl restart ntopng

Confirm the service is listening on port 5000:

netstat -tunlp | grep 5000

Step 5: Access Ntopng

Open your web browser and go to http://YourIpAddress:5000. Log in using the default credentials:

Username: admin
Password: admin

Change the default password when prompted to enhance security.

Installation on Ubuntu 20.04

Step 1: Add Ntopng Repository

First, install necessary dependencies:

sudo apt install wget gnupg software-properties-common

Download and install the Ntopng repository package:

wget https://packages.ntop.org/apt/20.04/all/apt-ntop.deb
sudo dpkg -i apt-ntop.deb

Update the package list:

sudo apt update

Install Ntopng and its dependencies:

sudo apt install pfring-dkms nprobe ntopng n2disk cento

Step 2: Configure Ntopng

Identify your network interfaces:

ntopng -h

Note the interface index you want to monitor (e.g., enp1s0). Edit the configuration file:

sudo nano /etc/ntopng/ntopng.conf

Add these lines to specify the interface and web server port:

# Network interface
-i=2
# Web server port
-w=3000

Restart Ntopng and enable it to start on boot:

sudo systemctl start ntopng
sudo systemctl enable ntopng

If using a firewall, allow traffic on the web server port:

sudo ufw allow 3000

Step 3: Test Ntopng

Access Ntopng via your web browser at http://localhost:3000. Log in with the default credentials:

Username: admin
Password: admin