====== Ubuntu - nmap - Perform a Fast Scan ======

Perform a fast scan with **-F** option to scans for the ports listed in the nmap-services files and leaves all other ports.

<code bash>
sudo nmap -F 192.168.1.69
</code>

result:

<code bash>
Starting Nmap 6.40 ( http://nmap.org ) at 2016-07-08 00:41 BST
Nmap scan report for peter-laptop-1 (192.168.1.69)
Host is up (0.0000090s latency).
Not shown: 97 closed ports
PORT    STATE SERVICE
80/tcp  open  http
139/tcp open  netbios-ssn
445/tcp open  microsoft-ds

Nmap done: 1 IP address (1 host up) scanned in 2.27 seconds
</code>

----

===== Fast scan With more info =====

This scan is faster than a normal scan because it uses the aggressive timing template and scans fewer ports.

<code bash>
sudo nmap -T4 -F 192.168.1.69
</code>

result:

<code bash>
Starting Nmap 6.40 ( http://nmap.org ) at 2016-07-08 01:59 BST
Nmap scan report for peter-laptop-1 (192.168.1.69)
Host is up (0.0000060s latency).
Not shown: 97 closed ports
PORT    STATE SERVICE
80/tcp  open  http
139/tcp open  netbios-ssn
445/tcp open  microsoft-ds

Nmap done: 1 IP address (1 host up) scanned in 1.87 seconds
</code>