Some Nmap Commands

Turn on OS and version detection scanning script (IPv4)

nmap -A 192.168.1.254
nmap -v -A 192.168.1.1
nmap -A -iL /tmp/scanlist.txt

Find out if a host/network is protected by a firewall

nmap -sA 192.168.1.254

Scan a host when protected by the firewall

nmap -PN 192.168.1.1

Scan a network and find out which servers and devices are up and running
This is known as host discovery or ping scan:

nmap -sP 192.168.1.0/24

Sample outputs:

Host 192.168.1.1 is up (0.00035s latency).
MAC Address: BC:AE:C5:C3:16:93 (Unknown)
Host 192.168.1.2 is up (0.0038s latency).
MAC Address: 74:44:01:40:57:FB (Unknown)
Host 192.168.1.5 is up.
Host nas03 (192.168.1.12) is up (0.0091s latency).
MAC Address: 00:11:32:11:15:FC (Synology Incorporated)
Nmap done: 256 IP addresses (4 hosts up) scanned in 2.80 second

Only show open (or possibly open) ports

nmap --open 192.168.1.1

Show all packets sent and received

nmap --packet-trace 192.168.1.1

Scan a host using TCP ACK (PA) and TCP Syn (PS) ping
If firewall is blocking standard ICMP pings, try the following host discovery methods:

nmap -PS 192.168.1.1
nmap -PS 80,21,443 192.168.1.1
nmap -PA 192.168.1.1
nmap -PA 80,21,200-512 192.168.1.1

How do I detect remote operating system?
You can identify a remote host apps and OS using the -O option:

nmap -O 192.168.1.1
nmap -O --osscan-guess 192.168.1.1
nmap -v -O --osscan-guess 192.168.1.1

 

How to Clear DNS Cache in MacOS Sierra

  1. Open the Terminal application, found in the Utilities folder within Applications
  2. Enter the following command syntax exactly (use copy and paste if in doubt about syntax accuracy):
    sudo killall -HUP mDNSResponder;say DNS cache has been flushed
  3. Hit the Return/Enter key and enter the admin password when requested (this is necessary because of sudo privileges)
  4. Wait a few moments for the DNS cache to be cleared
 

Durch die weitere Nutzung der Seite stimmst du der Verwendung von Cookies zu. Weitere Informationen

Die Cookie-Einstellungen auf dieser Website sind auf "Cookies zulassen" eingestellt, um das beste Surferlebnis zu ermöglichen. Wenn du diese Website ohne Änderung der Cookie-Einstellungen verwendest oder auf "Akzeptieren" klickst, erklärst du sich damit einverstanden.

Schließen