Scanning with an IP Range scanning target

An IP Range target is an agentless, scheduled scanning target that scans any IP range specified by you. The IP Range Scanning is suitable for Linux, Unix, Mac and Windows computers, VMware servers and other network devices. Some examples of network devices are: cameras, firewalls, mail servers, music systems, NAS devices, printers, routers, switches, UPS devices, VOIP phones and web servers. Windows computers submitted for scanning with an IP Range target can belong to a domain or a workgroup.

You can submit an unlimited number of IP Range targets for scanning and specify a separate scanning configuration for each. To submit an IP Range target for scanning, hit the Add Scanning Target button in the following section of the web console and choose the IP Range scanning type in the resulting popup: Scanning\Scanning Targets. If you have multiple scanning servers, there will be separate configuration tabs on the Scanning Targets page, one for each server.

Instead of manually submitting IP ranges one by one, you can also import them from a .csv file. Download the import template next to the Import IP Ranges button in the Scanning Targets menu, add your IP ranges to it and save as a .csv file. You can then import this file using the import button.

 As agentless scanning of Linux, Unix, Mac and Windows computers, VMware servers and SNMP enabled network devices requires credentials, make sure to submit and map your scanning credentials as well, by following the instructions in this knowledge base article.

IP Range settings

The IP Range scanning target offers a variety of settings to help you customize and optimize your scan requests. Below is an overview of available options and settings. Each IP Range target submitted for scanning can be configured differently.

  • IP Start: IP address that starts the range.
  • IP End: IP address that ends the range.
  • Ping Time-out: indicates the amount of time, in seconds, Lansweeper will spend waiting for a ping response from an asset before deeming the asset unreachable and moving on to the next IP address. In high traffic networks, increasing the timeout by several seconds is recommended.
    Based on the start IP, end IP and timeout you've configured, as well as your IP thread setting under Configuration\Server Options, an estimate is made of how long the scan of the IP range will take. Estimated scan times of 4 hours or more are displayed in red, to warn you that these ranges may take a long time to finish scanning.
  • Don't ping: if checked, Lansweeper will try to scan all IP addresses in the range, regardless of whether they can be pinged.
    Checking Don't Ping will slow down scanning, so it is generally recommended that you only enable this if you have devices that don't respond to ping requests.
  • Save pinged IP: if checked, asset pages will be generated for all IP addresses that respond to a ping request, even if no data can be pulled from any of the following protocols: Bonjour, DNS-SD, FTP, HTTP, HTTPS, JetDirect, mDNS, SIP, SMTP, SNMP (SNMPv1, SNMPv2 or SNMPv3), SSDP, SSH, Telnet, UPnP or WMI.
  • Ignore Windows: if checked, Windows computers within the IP range will not be scanned. Checking Ignore Windows is useful if you are already using other scanning targets to scan Windows computers. You can then opt to use the IP Range target just for scanning Linux, Unix and Mac computers, VMware servers and other network devices.
  • Scan New Windows Only: if checked, only Windows computers that are not in the database yet will be scanned by the IP Range target. This setting only affects Windows computers. Anything non-Windows will still be scanned.
  • No SSH: if checked, the SSH protocol will not be queried on the assets in the IP range.
  • Description: custom description you can assign to the scanning target.
  • SSH port: SSH port used for scanning, which is 22 by default.
  • SIP port: SIP port used for scanning, which is 5060 by default.
  • Schedule: determines when the IP range will be scanned, either at a scheduled time on certain days of the week or recurring every X number of hours or minutes.
  • Enable: check/uncheck this box to enable/disable scanning of the IP range.

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