nmap -T insane -p1-65535 192.168.1.101

Starting Nmap 6.00 ( http://nmap.org ) at 2015-02-17 13:46 CET
Nmap scan report for 192.168.1.101
Host is up (0.00031s latency).
All 65535 scanned ports on 192.168.1.101 are filtered
MAC Address: 00:0D:B9:2D:E2:B8 (PC Engines GmbH)

Nmap done: 1 IP address (1 host up) scanned in 657.32 seconds