I am after a software utility to help me scan for IPs of devices attached to a network. I have tried a few available on the internet. Although these softwares permit scanning by given ranges, I notice that for a device to be detected, it has to be on the same subnet as the computer running the scan. I need to be able to discover devices which may be on different IP ranges - by "brute force".
Specifically, I have tried Netscan (SoftPerfect) and IPScan (Radmin).
Maybe I am not using these utilities correctly. But any tips, suggestions from an expert would be greatly appreciated. Thanks