Nmap vs masscan is a very powerful tool to discovering info regarding machines on a network or the web (internet). Nmap allow to prove a system with packets for detect all information / everything from the running services and details about open ports for the Operating System and Version of Software.
MASSCAN is similar tool of Nmap, it is Nmap on massive overdrive. MASSCAN can scan entire internet in 6 minute and provide reports. It is best network scanner we also can say word class network scanner. masscan uses a custom TCP/IP stack and can conflict with other tools. The installation of MASSCAN is easy and quick. The MASSCAN repo found here https://github.com/robertdavidgraham/masscan
os 1. ip = 192.168.118.131
os 2. ip = 192.168.118.133
ssh service start in os 2.
start apache service in os 2.
using nmap scan os 2 from os 1.
using masscan scan os 2 form os 1.
scan google.com using nmap in os 1
scan google.com using mass scan in os 1.
ping google.com. See the ip 184.108.40.206 and using nmap scan that ip from os 1.
using masscan scan 220.127.116.11 ip address from os 1.
now using masscan scan the all avilable host in that network And same thing do with nmap.