Nessus

Nessus is a tool for vulnerability scanning, with detailed information.

It will perform:

Host discovery

Port scanning

Check if the services on the target are in the list of vulnerabilities

Use Nessus

Download the free version of Nessus and install it in your shell (chmod +x filename and sudo dpkg -i filename)
Start Nessus:
sudo systemctl start nessusd.service

Open browser and go to http://your-local-ip:8834

Use the activation code you received and create a Nessus account.
After the initialization process, click on New Scan.
Click on Basic Network Scan.
Write the name and target IP(s).
Click on Launch.
After the process, check the Vulnerabilities it found.

You can import the results on Metasploit, too!