How Hackers Find Out All Live Hosts in The Network | Check for Live Systems | Ping Sweep | Class 11
In this tutorial, you will learn ow Hackers Find Out All Live Hosts in The Network using Angry IP Scanner, fping, zenmap, nmap, netdiscover
03:00 - Angry IP Scanner
Angry IP Scanner implements several different methods of detecting alive hosts (pinging).
As a rule, if hosts don’t respond to pings, they are considered dead and therefore not scanned further. This behavior can be changed in the Preferences dialog, Scanning tab. In the same place you can also select the pinging method.
ICMP Echo pinging
This is the same method used by the ping program.
However, as it involves sending of ICMP (Internet Control Message Protocol) packets, it requires administrative (or root) privileges. If Angry IP Scanner runs without these privileges, this method can’t be used.
https://angryip.org/download/#linux
10:20 - fping
fping is a program to send ICMP echo probes to network hosts, similar to ping, but much better performing when pinging multiple hosts.
12:50 - NMAP
Nmap ("Network Mapper") is a free and open source utility for network discovery and security auditing. Many systems and network administrators also find it useful for tasks such as network inventory, managing service upgrade schedules, and monitoring host or service uptime.
https://nmap.org/
HOST DISCOVERY:
-sL: List Scan - simply list targets to scan
-sn: Ping Scan - disable port scan
-Pn: Treat all hosts as online -- skip host discovery
-PS/PA/PU/PY[portlist]: TCP SYN/ACK, UDP or SCTP discovery to given ports
nmap -sn 192.168.200.1/24
nmap -PS 192.168.200.1/24
nmap -PS80 192.168.200.1/24
nmap -sn -PS80 192.168.200.1/24
nmap -sn -PS443 192.168.200.1/24
nmap -sn -PS445 192.168.200.1/24
nmap -sn -PA443 192.168.200.1/24
nmap -sn -PA 192.168.200.1/24
nmap -sn -PU 192.168.200.1/24
nmap -sn -PU53 192.168.200.1/24
nmap -sn -PY 192.168.200.1/24
32:00 - netdiscover
netdiscover is an active/passive ARP reconnaissance tool, initially developed to gain information about wireless networks without DHCP servers in wardriving scenarios. It can also be used on switched networks. Built on top of libnet and libpcap, it can passively detect online hosts or search for them by sending ARP requests.
netdiscover -i eth0
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