SoftPerfect Network Scanner
Number of scanned devices changes in every scan
Started by J.S.
Number of scanned devices changes in every scan 07 December 2019, 15:17
Re: Number of scanned devices changes in every scan 07 December 2019, 15:29
Registered: 6 years ago
From your message it is hard to tell what exactly you refer to as "problem", so please pick the relevant information below:
- No MAC addresses are listed
This can happen when scanning non-local subnet. See this article for details on scanning non-local subnets and getting MAC addresses.
- Not all IP addresses are listed
That would be because not every IP address has network device associated with it. It could also mean some devices are firewalled. Try setting the ping method to Both ICMP and ARP and tick Display inactive devices.
- A different number of devices is found in each scan
This can happen over time when some devices go off-line and new devices come on-line. To make sure all devices are detected, use Both ICMP and ARP method, and increase ping timeout and the number of attempts in the scan settings.
Re: Number of scanned devices changes in every scan 28 December 2019, 09:48
Registered: 9 years ago
@JS, we had this problem and discovered that the anti-virus installed on the workstation was blocking our scans because it thought it was an attack. It was set to block for 5 minutes the first time around then 15 minutes the next time around. It would take about 15 minutes to do a full scan of the networks so each scan would have different results. I don't know if this is your case but I hope it helps in finding the issue. -WS