nmap - tool for network exploration and security auditing
To scan a system with hostname and IP address
$ nmap www.ilugc.in
$ nmap 18.140.226.100
To get more detailed information about the remote machines
$ nmap -v www.ilugc.in
To scan multiple hosts
$ nmap 157.240.16.35 104.244.42.193 18.140.226.100
To scan whole subnet
$ nmap 18.140.226.*
To scan to detect firewall settings
$ nmap -sA 18.140.226.100
To scan from a file
$ cat input.txt
157.240.16.35
104.244.42.193
18.140.226.100
$ nmap -iL input.txt
To scan multiple servers using last octet of IP address
$ nmap 172.10.0.101,102,103
To scan IP address range
$ nmap 172.10.0.101-110
To scan network excluding remote hosts
$ nmap 172.10.0.* --exclude 172.10.0.100
To scan OS information and traceroute
$ nmap -A 18.140.226.100
To enable OS detection with nmap
$ sudo nmap -O ilugc.in
To scan a host to check its protected by firewall
$ nmap -PN 18.140.226.100
To find out Live hosts in a network
$ nmap -sP 18.140.226.*
To perform a fast scan
$ nmap -F 18.140.226.100
To print host interfaces and routes
$ nmap --iflist
To scan for specific port
$ nmap -p 80 www.ilugc.in
$ nmap -p 443 www.ilugc.in
To scan a TCP port
$ nmap -p T:443,80 www.ilugc.in
To scan a UDP Port
$ nmap -pU 22 www.ilugc.in
To scan multiple ports
$ nmap -p 80,443,22,53 18.140.226.100
To scan ports by range
$ nmap -p 80-450 18.140.226.100
To find host services version numbers
$ nmap -sV 18.140.226.100
regards,
T.Dhanasekar
---
Mailing List Guidelines: https://ilugc.in/mailing-list-guidelines
Web: http://ilugc.in/
Internet Relay Chat: #ilugc on libera.chat
