Preciso de um tempo para dar uma olhada rápida para verificar o que está acontecendo na minha rede. Aqui está como faço isso:
Para executar ping em cada ip de 192.168.0.1 a 192.168.0.254:
nmap -sP -R 192.168.0.1-254-sP significa: PING
-R significa: pesquisa reversa para encontrar o nome de domínio
Host ar01-hill-hill.example.com (172.16.43.129) appears to be up.
MAC Address: 00:11:BC:7D:28:0A (Cisco Systems)
Host ccf-hill019-1.example.com (172.16.43.130) appears to be up.
MAC Address: 00:00:AA:63:54:BB (Xerox)
Host ccf-hill019-16.example.com (172.16.43.145) appears to be down.
Host ccf-hill019-17.example.com (172.16.43.146) appears to be down.
Host ccf-hill019-18.example.com (172.16.43.147) appears to be up.
MAC Address: 00:1E:C2:0D:C1:98 (Unknown)
Host ccf-hill019-19.example.com (172.16.43.148) appears to be down.
Host ccf-hill019-20.example.com (172.16.43.149) appears to be down.
Host ccf-hill019-21.example.com (172.16.43.150) appears to be down.
Host lordkris.example.com (172.16.43.151) appears to be down.
Host ccf-hill019-29.example.com (172.16.43.158) appears to be down.
Host ccf-hill019-30.example.com (172.16.43.159) appears to be down.
Nmap finished: 31 IP addresses (7 hosts up) scanned in 0.892 secondsMostra o endereço MAC, se disponível (LAN)
Agradecimentos a: http://blog.jasonantman.com/2010/02/using-nmap-to-quickly-ping-all-hosts-in-an-address-range/