Example: Host Discovery
Knowing what hosts are on your network is the first step to any vulnerability assessment. Launch a host discovery scan to see what hosts are on your network. After you have a list of hosts, you can choose what hosts you want to target in a specific vulnerability scan.
Hosts discovered by a host discovery scan do not count towards your license limit, if applicable. For more information, see License Utilization.
The following overview describes a typical workflow of creating and launching a host discovery scan, then creating a follow-up scan that target discovered hosts that you choose.
In the top navigation bar, click Scans.
The My Scans page appears.
In the upper right corner, click the New Scan button.
The Scan Templates page appears.
- Under Discovery, click the Host Discovery template.
- Configure the host discovery scan:
- For Name, enter a name for the scan.
For Targets, enter targets as hostnames, IPv4 addresses, or IPv6 addresses.
Tip: For IP addresses, you can use CIDR notation (e.g., 192.168.0.0/24), a range (e.g., 192.168.0.1-192.168.0.255), or a comma-separated list (e.g., 192.168.0.0,192.168.0.1). For more information, see Scan Targets.
- (Optional) Configure the remaining settings.
To launch the scan immediately, click the button, and then click Launch.
Nessus runs the host discovery scan, and the My Scans page appears.
In the scans table, click the row of a completed host discovery scan.
The scan's results page appears.
- In the Hosts tab, view the hosts that Nessus discovered.
What to do next
- Create a scan that targets hosts that Nessus discovered in your host discovery scan.