Linux-OS

nmap

Herramienta de exploración de redes y analizador de puertos.

$ nmap -sP 192.168.0.0/24

Starting Nmap 4.11 ( http://www.insecure.org/nmap/ ) at 2007-06-27 10:13 CEST
Host equipo1 (192.168.0.1) appears to be up.
Host equipo2 (192.168.0.2) appears to be up.
Host equipo3 (192.168.0.4) appears to be up.
…
Nmap finished: 256 IP addresses (12 hosts up) scanned in 2.219 seconds

fping

Una herramienta de ping que se puede utilizar fácilmente para múltiples equipos y en scripts.

$ fping -g 192.168.0./24

192.168.0.0 error while sending ping: Permission denied
192.168.0.1 is alive
192.168.0.2 is alive
192.168.0.3 is alive
ICMP Host Unreachable from 192.168.0.2 for ICMP Echo sent to 192.168.0.4
…

O mejor:
$ fping -g 192.168.0./24 2> /dev/null | grep alive

192.168.0.1 is alive
192.168.0.2 is alive
192.168.0.3 is alive
…

ip

Herramienta de configuración del protocolo ip. Permite ver y modificar rutas, dispositivos, tuneles…

$ ip neig

192.168.0.4 dev eth1 lladdr xx:xx:xx:xx:xx:xx STALE
192.168.0.60 dev eth1 lladdr xx:xx:xx:xx:xx:xx STALE
192.168.0.61 dev eth1 lladdr xx:xx:xx:xx:xx:xx STALE
192.168.0.52 dev eth1 lladdr xx:xx:xx:xx:xx:xx STALE
…

nbtscan

Escanea redes en busca de nombres NETBIOS.

# nbtscan -r 192.168.0.0/24

Doing NBT name scan for addresses from 192.168.0.0/24

IP address NetBIOS Name Server User MAC address
——————————————————————————
192.168.0.0 Sendto failed: Permission denied
192.168.0.2
192.168.0.60 xxxx-LAB10 xxxx-LAB10 xx:xx:xx:xx:xx:xx
192.168.0.52 xxxxxxxxxxxx-01 xxxxxxxxxxxx-01 xx:xx:xx:xx:xx:xx
192.168.0.61 xxxx-LAB11 xxxx-LAB11 xx:xx:xx:xx:xx:xx
…

:wq!