How To Set up Ntopng on Rocky Linux 8

In this guide, we want to teach you How To Set up Ntopng on Rocky Linux 8.

ntopng, an open-source traffic monitoring application designed for high-speed networks. ntopng’s key features are large network’s real-time analytics, the ability to characterize protocols, user traffic behavior, and identify application traffic.

It can identify network bottlenecks, trigger alerts based on thresholds, and merge data from multiple ntopng instances. ntopng can be enabled both on physical hosts and virtual machines, making it suitable for virtualized and cloud environments.

The ntopng software comes in four versions: Community, Professional, Enterprise M, Enterprise L, and Enterprise L Bundle. Each version unlocks additional features with respect to the smaller one.

How To Set up Ntopng on Rocky Linux 8

To install Ntopng on Rocky Linux 8, you need to log in to your server as a non-root user with sudo privileges and set up a basic firewall. To do this, you can check our guide the Initial Server Setup with Rocky Linux 8.

Follow the steps below to complete this guide.

Install Ntopng on Rocky Linux 8

Ntopng packages aren’t available in the default Rocky Linux repository. So you need to add it to your server.

First, you need to add the Ntop packages repository with the following command:

curl > /etc/yum.repos.d/ntop.repo

Then, you need to install the Epel repository with the command below:

dnf install epel-release

Now you need to add the Remi repository to your server with the following command:

rpm -ivh

Next, install the dnf plugins on Rocky Linux 8:

dnf install dnf-plugins-core

Use the following commands to enable the power tools and Remi repository:

# dnf config-manager --set-enabled PowerTools
# dnf config-manager --set-enabled remi

Update your local package index:

dnf update -y

At this point, you can install the Ntopng and its dependencies with the following command:

dnf install pfring-dkms n2disk nprobe ntopng cento

Note: PF_RING is now packaged without ZC drivers so you can optionally install them:

dnf install pfring-drivers-zc-dkms

Most software work without licenses. However, some components do need a license. They include:

  • PF_RING ZC user-space libraries
  • nProbe (NetFlow/IPFIX probe)
  • n2disk (packet to disk application)

If you are a nProbe user and want to install a nProbe package with no dependency, please install the nProbes (rather than the nProbe) package. Note that you can either install the nProbe or the nProbes package but NOT both simultaneously.

Now start and enable your Ntopng service on Rocky Linux 8 with the following command:

systemctl enable --now ntopng

Verify your service is active and running:

systemctl status ntopng
ntopng.service - ntopng high-speed web-based traffic monitoring and analysis >
Loaded: loaded (/usr/lib/systemd/system/ntopng.service; enabled; vendor pres>
Active: active (running) since Sat 2022-04-09 04:07:03 EDT; 4s ago
Process: 108036 ExecStartPre=/bin/sh -c /bin/sed "/^[ ]*-e.*$\|^[ ]*-G.*\|^[ >
Process: 108034 ExecStartPre=/bin/sh -c /bin/cat /etc/ntopng/ntopng.conf.d/*.>
Process: 108030 ExecStartPre=/bin/sh -c /bin/cat /etc/ntopng/ntopng.conf > /r>
Process: 108016 ExecStartPre=/bin/sh -c /usr/bin/ntopng-utils-manage-config ->
Main PID: 108040 (2/flow_checks)
Tasks: 18 (limit: 11409)
Memory: 74.6M
CGroup: /system.slice/ntopng.service
└─108040 /usr/bin/ntopng /run/ntopng.conf

Access Ntopng Web Interface

Ntopng by default listens on port 3000. You need to open the Ntopng port through Rocky Linux 8 firewall with the following command:

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

Reload the firewall to apply the new rules:

firewall-cmd --reload

At this point, you can access the Ntopng web interface by typing your server’s IP address in your web browser followed by 3000:


You will see the Ntopng login screen. Use the default credentials: admin:admin and reset the password afterward.

Ntopng login screen

Now you can change the default password and press change password.

Change the Ntopng default password

At this point, you will see your Ntopng dashboard.

Ntopng dashboard on Rocky Linux 8

For more information, you can visit the Ntopng Documentation page.


At this point, you learn to Set up Ntopng on Rocky Linux 8.

Hope you enjoy using it.

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