Nmap

Nmap is an associate degree abbreviation of ‘Network Mapper,’ which could be an alright notable free and open supply hackers tool. It's used for network discovery and security auditing. Virtually thousands of system admins all around the world area unit victimization Nmap for network inventory, check for open ports, manage service upgrade schedules, and monitor host or service period. Nmap, as a tool, uses raw science packets in artistic ways in which to work out what hosts area unit offered on the network, what services (application name and version) those hosts area unit providing data regarding, what operative systems (fingerprinting), and what kind and version of packet filters/ firewalls area unit getting used by the target.

Installation

Open termux and kind the subsequent commands step by step.

• pkg update
• pkg install Nmap

Nmap Commands :

• Nmap Target choice:-
• Scan one IP: Nmap 192.168.1.1
• Scan a host: Nmap World Wide Web.testhostname.com
• Scan a spread of IPs: Nmap 192.168.1.1-20
• Scan a subnet: Nmap 192.168.1.0/24
• Scan targets from a text file: Nmap -iL list-of-ips.txt

Nmap Port choice:-

• Scan one Port: Nmap -p twenty-two 192.168.1.1
• Scan a spread of ports: Nmap -p 1-100 192.168.1.1
• Scan a hundred most typical ports (Fast): Nmap -F 192.168.1.1
• Scan all 65535 ports: Nmap -p- 192.168.1.1

Nmap Port Scan varieties:-

• Scan victimization protocol connect: nmap -sT 192.168.1.1
• Scan victimization protocol SYN scan (default): nmap -sS 192.168.1.1
• Scan UDP ports: nmap -sU -p 123,161,162 192.168.1.1
• Scan elite ports - ignore discovery: nmap -Pn -F 192.168.1.1

Nmap Output Formats :-

• Save default output to file: Nmap -oN outputfile.txt 192.168.1.1
• Save results as XML: Nmap -oX outputfile.xml 192.168.1.1
• Save leads to a format for grep: Nmap -oG outputfile.txt 192.168.1.1
• Save formats altogether: Nmap -oA output file 192.168.1.1

HTTP Service data:-

• Gather page titles from hypertext transfer protocol services: Nmap --script=http-title 192.168.1.0/24
• Get hypertext transfer protocol headers of internet services: Nmap --script=http-headers 192.168.1.0/24
• Find internet apps from notable paths: nmap --script=http-enum 192.168.1.0/24
• Heartbleed Testing: nmap -sV -p 443 --script=ssl-heartbleed 192.168.1.0/24

IP Address data :-

• Find data regarding science address: nmap --script=asn-query,whois,ip-geolocation-maxmind 192.168.1.0/24