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Nmap features include: Fast scan (nmap -F [target]) – Performing a basic port scan for fast result. Host discovery – Identifying hosts on a network. For example, listing the hosts that respond to TCP and/or ICMP requests or have a particular port open. Port scanning – Enumerating the open ports on target hosts.
This tells nmap to do a ping sweep and show all hosts that are up in the given IP range. Once you have found a zombie, next you would send the spoofed packets: nmap -P0 -p <port> -sI <zombie IP> <target IP> The images juxtaposition show both of these stages in a successful scenario.
The port numbers in the range from 0 to 1023 (0 to 2 10 − 1) are the well-known ports or system ports. [3] They are used by system processes that provide widely used types of network services. On Unix-like operating systems, a process must execute with superuser privileges to be able to bind a network socket to an IP address using one of the ...
In computing, a ping sweep is a method that can establish a range of IP addresses which map to live hosts.. The classic tool used for ping sweeps is fping, [1] [2] [3] which traditionally was accompanied by gping to generate the list of hosts for large subnets, [4] although more recent versions of fping include that functionality. [1]
A port scan or portscan is a process that sends client requests to a range of server port addresses on a host, with the goal of finding an active port; this is not a nefarious process in and of itself. [1] The majority of uses of a port scan are not attacks, but rather simple probes to determine services available on a remote machine.
Scanning: Uses technical tools to further the attacker's knowledge of the system. For example, Nmap can be used to scan for open ports. Gaining access: Using the data gathered in the reconnaissance and scanning phases, the attacker can use a payload to exploit the targeted system.
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