Hi Thelma and others, On Fri Feb 10 2017, 18:34:34 CET wrote the...@sys-concept.com: > When I scan my local network: > nmap -sn 10.10.0.0/24 > > It prints all the devices connected to it but sometimes it prints the > device "name" and sometimes it doesn't eg: > > Nmap scan report for iaxy (10.0.0.108) > Host is up (-0.095s latency). > MAC Address: 00:0F:D3:00:30:DD (Digium) > > Nmap scan report for 10.10.0.3 > Host is up (0.00017s latency). > MAC Address: 54:7F:54:76:61:0D (Ingenico) > > "...for "name" + IP" > "...for + IP > > Where is it taking the "name" from? > It would like to assign a label "name" to all devices. > -- > Thelma
I’d say that the name "iaxy" is a via DNS (reverse) resolved hostname; maybe there is a DNS server running (or there are entries in /etc/hosts) or it’s just zeroconf/bonjour[1], which runs nowadays virtually everywhere. The other part looks to me as vendors names nmap got from the MAC addresses which first parts are vendor specific. A quick search[2] gave me these two results (beside some other ones) who seem to confirm my thoughts: http://superuser.com/questions/702309/how-to-get-device-name-from-scan-like-nmap-on-linux http://stackoverflow.com/questions/27817412/why-nmap-sometimes-does-not-show-device-name [1] https://en.wikipedia.org/wiki/Zero-configuration_networking [2] https://duckduckgo.com/?q=nmap+device+names&t=ffab&ia=qa Hope that helps you :) PS: What exactly does '-sn' (or is it just a typo)? My nmap doesn't complain when I use it, but the manpage only knows about '-sN' here (net-analyzer/nmap-7.40). -- Nils Freydank GnuPG-Key: 0x44594171807206CF @ hkp://keys.gnupg.net fpr: AA2D 5CC0 0457 297F 6164 3911 4459 4171 8072 06CF
signature.asc
Description: This is a digitally signed message part.
