OC Scanner uses the Internet Control Messaging Protocol (ICMP) to ping remote machines. When ICMP is disabled, OC Scanner checks if the TCP 135 port is open.
NOTE: For a domain scan, where an IP address is entered for the scan scope in the scan file, ICMP needs to be enabled on all machines in the domain. When ICMP is disabled, OC Scanner can’t collect an IP address from the DNS name.
If a remote machine is online, OC Scanner collects information about the CPU, RAM, local users, Active Directory users (if there’s an Active Directory), and the installed software. If a remote host is offline, OC Scanner moves to another machine in the scan scope and later on returns to check if the offline host has become available.
Scheduled Scan
For scheduled scans, you need to create a scheduled task. The scheduled task can be configured over the configuration of the scan file. Once the scheduled task is configured for OC Scanner, you need to start OC Scanner the first time manually, so it can create its own scheduled task in the Windows Task Scheduler.
We do not recommend creating manually scheduled tasks. Only in certain situations, it could make sense to create manually scheduled tasks (e.g. if you are deploying a big amount of OC Scanners with a third-party tool, which also can manage the scheduling of the deployed OC Scanners).