How To Install Ntopng on AlmaLinux 8

In this tutorial, we will show you how to install Ntopng on AlmaLinux 8. For those of you who didn’t know, Ntopng is a free, open-source software network monitoring solution based on commodity hardware. The main difference between ntopng and a traffic collector, is that ntopng not only reports traffic statistics but it also analyzes the traffic, draws conclusions on observed traffic type, and reports cybersecurity metrics. It is Cross-platform and runs on every Unix platform, macOS, and Windows.

This article assumes you have at least basic knowledge of Linux, know how to use the shell, and most importantly, you host your site on your own VPS. The installation is quite simple and assumes you are running in the root account, if not you may need to add ‘sudo‘ to the commands to get root privileges. I will show you the step-by-step installation of the Ntopng network monitor on an AlmaLinux 8. You can follow the same instructions for Fedora, RHEL, CentOS, and Rocky Linux distributions.

Prerequisites

• A server running one of the following operating systems: AlmaLinux 8.
• It’s recommended that you use a fresh OS install to prevent any potential issues.
• SSH access to the server (or just open Terminal if you’re on a desktop).
• A non-root sudo user or access to the root user. We recommend acting as a non-root sudo user, however, as you can harm your system if you’re not careful when acting as the root.

Install Ntopng on AlmaLinux 8

Step 1. First, let’s start by ensuring your system is up-to-date.

sudo dnf clean all
sudo dnf install epel-release
sudo dnf install http://rpms.remirepo.net/enterprise/remi-release-8.rpm
sudo dnf config-manager --set-enabled powertools
sudo dnf update

Step 2. Installing Ntopng on AlmaLinux 8.

By default, Ntopng is not available on the AlmaLinux 8 base repository. Now we run the following command to add the Ntop packages repository to your system:

wget https://packages.ntop.org/centos-stable/ntop.repo -O /etc/yum.repos.d/ntop.repo

Then, update the repository and install Ntopng by running the following command:

sudo dnf update
sudo dnf erase zeromq3
sudo dnf install pfring-dkms n2disk nprobe ntopng cento pfring-drivers-zc-dkms

Finally, run the community version of Ntopng, edit the configuration file, /etc/ntopng/ntopng.conf, by running the command below:

sed -i 's#-G=/var/run/ntopng.pid#-G=/var/run/ntopng.pid \\n--community#'  /etc/ntopng/ntopng.conf

After the installation is complete, now enable Ntopng (to start automatically upon system boot), start, and verify the status using the commands below:

sudo systemctl start ntopng
sudo systemctl enable ntopng
sudo systemctl status ntopng

Step 3. Configure Firewall.

Allow the firewall to port 3000 and reload it with the following commands:

sudo firewall-cmd --permanent --add-port=3000/tcp
sudo firewall-cmd --reload

Step 4. Accessing Ntopng Web Interface.

Once successfully installed, open your web browser and access the Ntopng using the URL http://your-IP-server:3000. You will be redirected to the following page:

Provide the default username and password as admin/admin and click on the Login button.

Congratulations! You have successfully installed Ntopng. Thanks for using this tutorial for installing the Ntopng web-based traffic monitoring application on your AlmaLinux 8 system. For additional help or useful information, we recommend you check the official Ntopng website.