Nmap: Difference between revisions
Jump to navigation
Jump to search
(Created page with "'''Nmap''' (Network Mapper) <ref>wikipedia:Nmap</ref> is a cross-platform (BSD, Linux, Mac, Windows) utility for network discovery and security auditing. == Network disco...") |
mNo edit summary |
||
| (2 intermediate revisions by the same user not shown) | |||
| Line 1: | Line 1: | ||
'''Nmap''' (Network Mapper) <ref>[[wikipedia:Nmap]]</ref> is a cross-platform (BSD, Linux, Mac, Windows) utility for network discovery and security auditing. |
'''Nmap''' (Network Mapper) <ref>[[wikipedia:Nmap]]</ref> is a cross-platform (BSD, Linux, Mac, Windows) utility for network discovery and security auditing. |
||
== Backgroud == |
|||
Nmap is a useful tool to find the IP address of a device (e.g. if the device acquired the IP address via DHCP) or to debug connectivity problems (e.g. to check if a firewall blocks ports). |
|||
== Network discovery example == |
== Network discovery example == |
||
In a terminal window |
In a terminal window type: |
||
nmap -v 192.168.1.* |
|||
You can specify a specific IP address to scan a single host or use an asterisk (wildcard character) to scan an entire subnet. The resulting output contains a list of discoverd devices with their hostname, IP address and active network ports. |
|||
== UDP scan example == |
|||
nmap 192.168. |
sudo nmap -v -sU 192.168.0.1 |
||
This command scans the UDP ports of a specific device. |
|||
The resulting output shows you a list of the discoverd devices with their accessible network ports. |
|||
== References == |
== References == |
||
Latest revision as of 10:48, 16 April 2021
Nmap (Network Mapper) [1] is a cross-platform (BSD, Linux, Mac, Windows) utility for network discovery and security auditing.
Backgroud
Nmap is a useful tool to find the IP address of a device (e.g. if the device acquired the IP address via DHCP) or to debug connectivity problems (e.g. to check if a firewall blocks ports).
Network discovery example
In a terminal window type:
nmap -v 192.168.1.*
You can specify a specific IP address to scan a single host or use an asterisk (wildcard character) to scan an entire subnet. The resulting output contains a list of discoverd devices with their hostname, IP address and active network ports.
UDP scan example
sudo nmap -v -sU 192.168.0.1
This command scans the UDP ports of a specific device.