Nmap lists open ports for remote machines
Nmap Scan Technology View Zenamp Scan Port NAMP Scan Port from the command line
Domain name resolution using the specified DNS server Target host alive or firewall enabled (-pn parameter) Scan specific port range (-p)
Nmap (Network Mapper) is used to discover hosts and services on a computer network to create a “map” of the network. To achieve its goal, Nmap sends a specific packet to the target host and then analyzes the response. We can use Nmap to detect the server’s live and developed services, as well as to perform security audits on targets.
zenamp: Graphical interface version of Namp.
The principle of
Determine whether the command line entered by Nmap contains the domain name. If it contains the domain name, it needs to use the DNS server for domain name resolution, and then send ICMP Echo Request to detect the host’s existence. Nmap will retrieve the machine information including the port information based on the packet returned.
|STATE (port) th>||explain th> tr>|
|open td>||said port in the open STATE td> tr>|
|closed td>||said port closed td> tr>|
|filterd td>||said port in the filter can’t receive the returned the probe STATE td> tr>|
|unfilterd td>||said port received back to the probe, but can’t confirm td> tr>|
|opend/unfilterd td>||said port in the open or no filtering state td> tr>|
|closed/unfilterd td>|| said port in the closed or filtering state td> tr> tbody> table>|
NMAP scan technology to view
nmap-h / mark> >
SCAN TECHNIQUES are part of the SCAN TECHNIQUES. The following scanning techniques can be used to bypass certain filters in certain scenarios to achieve the purpose of detection. The parameters should be selected according to the actual situation.
Zenamp scans ports
Once Zenamp is open, enter the domain name or IP you want to probe into the target.
The namp scan port on the command line
Kali bring namp, nmap to use under Windows, the installation is successful in his folder exists after zenamp namp command line version exists, in the folder of CMD into namp enter namp. Exe followed by the domain name or IP address mark> can scan, need to know the process of scanning can use the enter key when can get the current scanning progress.
Use the specified DNS server to resolve the domain name
The domain name is resolved to the IP address by the DNS server before the NMap probe. We can also use the specified DNS server for the resolution.