Nmap scan issues

Usage and Config Asset Discovery
1

Hello,
I’ve faced the following issue while running nmap scan:

  1. host names are n/a on most of assets
  2. many os are wrong and not accurate and for windows computers it shows linux, ipxe or tomato
  3. all mobile phones connected to wifi network are not shown
2

That’s a common issue in NMAP itself. It can only infer hostnames when the target responds with something readable, like responding with a NetBIOS name to Windows shares or host headers on a website or something like that. Most modern Windows versions won’t provide that to an anonymous scanner these days, and may not respond at all given default Windows Firewall rules. In many cases all NMAP can get is that “a thing exists” based on ARP replies.

2 Likes
3

Are your scan points primarily scanning local subnets, or scanning across subnets? (you may have better results when scanning local subnets)

4

local subnet and across subnets