Install ntop on Red Hat Enterprise Linux / CentOS Linux

To install ntop on Red Hat Enterprise Linux (RHEL) or CentOS, you will need to have root privileges or access to a user with sudo privileges.

1. First, update the package repository by running the following command:

sudo yum update

2. Install the ntop repository by running the following command:

sudo yum install http://pkgs.repoforge.org/rpmforge-release/rpmforge-release-0.5.3-1.el7.rf.x86_64.rpm

3. Install ntop by running the following command:

sudo yum install ntop

4. Once the installation is complete, you can start using ntop. To start the ntop daemon, run the following command:

sudo service ntop start

5. To make sure that ntop starts automatically at boot time, run the following command:

sudo chkconfig ntop on

That's it! ntop should now be installed on your RHEL or CentOS system. You can access the ntop web interface by opening a web browser and going to the following URL:

http://localhost:3000/

Note: If you are using a firewall, you may need to allow traffic to the ntop port (3000 by default). To do this, run the following commands:

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