use nmap to port scan / find free IPS

I use angry IP scanner in windows, linux has a good util for port scanning an ip range called nmap;

Grab nmap from usual repositories

sudo nmap -sP (will show hosts up and resolve mac addresses to vendors)

sudo nmap -v -sT (will show hosts up and the various open ports)

sudo nmap -v -sT (will show particular host and the various open ports)

Starting Nmap 6.00 ( ) at 2013-07-12 11:48 NZST
Initiating ARP Ping Scan at 11:48
Scanning [1 port]
Completed ARP Ping Scan at 11:48, 0.00s elapsed (1 total hosts)
Initiating Parallel DNS resolution of 1 host. at 11:48
Completed Parallel DNS resolution of 1 host. at 11:48, 0.00s elapsed
Initiating Connect Scan at 11:48
Scanning ( [1000 ports]
Discovered open port 111/tcp on
Discovered open port 445/tcp on
Discovered open port 3389/tcp on
Discovered open port 135/tcp on
Discovered open port 139/tcp on
Discovered open port 49155/tcp on
Discovered open port 1063/tcp on
Discovered open port 2049/tcp on
Discovered open port 3260/tcp on
Completed Connect Scan at 11:48, 4.21s elapsed (1000 total ports)
Nmap scan report for (
Host is up (0.00059s latency).
Not shown: 991 filtered ports
111/tcp open rpcbind
135/tcp open msrpc
139/tcp open netbios-ssn
445/tcp open microsoft-ds
1063/tcp open kyoceranetdev
2049/tcp open nfs
3260/tcp open iscsi
3389/tcp open ms-wbt-server
49155/tcp open unknown
MAC Address: 00:50:56:9C:68:FA (VMware)

Read data files from: /usr/bin/../share/nmap
Nmap done: 1 IP address (1 host up) scanned in 4.25 seconds
Raw packets sent: 1 (28B) | Rcvd: 1 (28B)