N-map: Free Network Scanning By Nmap Tool

N-map means the network map. It allows the secured process of a network on the Internet.

This tool helps you to secure the whole network through the Nmap online tool. Therefore, you can get more safe access internet. Be continue.

Nmap Tutorial

The purpose of the N-map is for a secured connection on the Internet for Hosts, Subnet, and DNS (Domain Name Server).

N-map tool is much helpful to the Business Owner as well as Entrepreneur. Because There’s needed a secure connection to selling out the product. So, Nmap is much needed for them.

Nmap Command

You can see here more about the nmap command. So, Let be start with us.

Nmap Scan Host

Explained Code:~ $nmap 192.168.0.101 (IP address of Intenet) 192.168.0.102 192.168.0.103

redhat@redhat-ThinkCenter-A58:~$ nmap 192.168.0.101 192.168.0.102 192.168.0.103

Starting Nmap 7.01 ( https://nmap.org ) at 2016-08-20 11:17 IST
Nmap scan report for 192.168.0.101
Host is up (0.00054s latency)
Not shown: 997 filtered ports
PORT STATE SERVICE
80/tcp open http
443/tcp open https
6346/tcp closed gnutella

Nmap scan report for 192.168.0.102
Host is up (0.00051s latency)
Not shown: 997 filtered ports
PORT STATE SERVICE
80/tcp open http
443/tcp open https
6346/tcp closed gnutella

Nmap scan report for 192.168.0.103
Host is up (0.00052s latency)
Not shown: 997 filtered ports
PORT STATE SERVICE
80/tcp open http
443/tcp open https
6346/tcp closed gnutella

Nmap done: 3 IP addresses ( 3 hosts up ) scanned in 8.45 seconds

• This code scanning multiple hosts in the internet connection.

Nmap Scan Subnet

Explained Code:~ $ nmap 10.10.2.*(subnet address of internet )

redhat@redhat-ThinkCenter-A58:~$ nmap 10.10.2.*

Starting Nmap 7.01 ( https://nmap.org ) at 2016-08-20 10:47 IST
Nmap scan report for 10.10.2.10
Host is up (0.00048s latency) .
All 1000 scanned ports on 10.10.2.10 are Closed

Nmap scan report for 10.10.2.11
Host is up (0.00029s latency) .
All 1000 scanned ports on 10.10.2.11 are Closed

Nmap scan report for 10.10.2.12
Host is up (0.00035s latency) .
All 1000 scanned ports on 10.10.2.12 are Closed

Nmap scan report for 10.10.2.16
Host is up (0.00027s latency) .
All 1000 scanned ports on 10.10.2.16 are Closed

Nmap scan report for 10.10.2.23
Host is up (0.00038s latency) .
All 1000 scanned ports on 10.10.2.23 are Closed

Nmap scan report for 10.10.2.34
Host is up (0.00037s latency) .
All 1000 scanned ports on 10.10.2.34 are Closed

• This command scanning subnet address from the internet.

Nmap Port Scan

Explained Code: $ nmap -PA -p 22,80 ( port number of the process from one host to other hosts )

redhat@redhat-ThinkCenter-A58:~$ nmap -PA -p 22,80 192.168.0.101

Starting Nmap 7.01 ( https://nmap.org ) at 2016-08-20 11:16 IST
Nmap scan report for 192.168.0.101
Host is up (0.00033s latency ) .
PORT STATE SERVICE
22/tcp filtered ssh
80/tcp open http

Nmap Done: 1 IP address scanned in 1.22 seconds

• This command scan port address with TCP is the transmission control protocol which established the connection between user and server.

• The Port is a process to acknowledge at a particular place for example when we upload any file or photo on the internet. The Port number identified to a place of the process where to place. So, the port number much needed to identify to the process on the internet.

Nmap Check If Host Is Up

Explained Code: $ nmap -PN 192.168.0.101

redhat@redhat-ThinkCenter-A58:~$ nmap -PN 192.168.0.101

Starting Nmap 7.01 ( https://nmap.org ) at 2016-08-20 11:10 IST
Nmap scan report for 192.168.0.101
Host is up (0.00046s latency ) .
Not shown: 997 filtered ports
PORT STATE SERVICE
80/tcp open http
443/tcp open https
6346/tcp closed gnutella

Nmap done: 1 IP address scanned in 6.35 seconds

• This command checked the network connection is secured or not.

N-map Router And Host Interface

redhat@redhat-ThinkCenter-A58:~$ nmap –iflist

Starting Nmap 7.01 ( https://nmap.org ) at 2016-08-20 11:14 IST
*********************INTERFACES**************************************
DEV (SHORT) IP/MASK TYPE UP MTU MAC
lo (lo) 127.0.0.1/8 lookback up 65536
lo (lo) ::1/128 lookback up 65536
ens33 (ens33) 10.10.2.11/16 ethernet up 1500 00:01:6C:59:C9:E2
ens33 (ens33) fe80::d704:e408:62b9:63d2/64 ethernet up 1500 00:01:6C:59:C9:E2

***********************ROUTES*******************************************
DST/MASK DEV METRIC GATEWAY
10.10.0.0/16 ens33 100
169.254.0.0/16 ens33 1000
0.0.0.0/0 ens33 100 10.10.1.200
::1/128 lo 0
fe80::d704:e408:62b9:63d2/128 lo 0
fe80::/64 ens33 256
ff00::/8 ens33 256

• This command displays the interface of hosts and router on the internet. this may help the user to give safe accessing to someone else. Because we can check user performance by optimized this code.

Nmap List All Devices On Network

redhat@redhat-ThinkCenter-A58:~$ nmap -sP 192.168.0.*

Starting Nmap 7.01 ( https://nmap.org ) at 2016-08-20 11:11 IST
Nmap scan report for 192.168.0.0
Host is up (0.00012s latency) .
Nmap scan report for 192.168.0.1
Host is up (0.00026s latency) .
Nmap scan report for 192.168.0.2
Host is up (0.00022s latency) .
Nmap scan report for 192.168.0.3
Host is up (0.00021s latency) .
Nmap scan report for 192.168.0.4
Host is up (0.00019s latency) .
Nmap scan report for 192.168.0.5
Host is up (0.00018s latency) .
Nmap scan report for 192.168.0.6
Host is up (0.00036s latency) .
Nmap scan report for 192.168.0.7
Host is up (0.00043s latency) .
Nmap scan report for 192.168.0.8
Host is up (0.00042s latency) .
Nmap scan report for 192.168.0.9
Host is up (0.0012s latency) .
Nmap scan report for 192.168.0.10
Host is up (0.0012s latency) .
Nmap scan report for 192.168.0.11
Host is up (0.00039s latency) .
Nmap scan report for 192.168.0.12
Host is up (0.00042s latency) .
Nmap scan report for 192.168.0.13
Host is up (0.00033s latency) .

• This command will help you to scan all the live hosts or devices on the internet. This code will display all the live hosts.

Conclusion

N-map is the best security tool and also that can help to become an ethical hacker. This is the best tool where we can see each process of the network.

This tool can help you to find the bug from any website. we can check daily any website performance with the help of this tool.

Web Security is much important on the internet. Because some time network may have lost or hacked by the unwanted data.

By Network crashed, The Data of own maybe theft. So It’s important to be a secured connection in a particular place.

N-map is the best security tool to a safe network on the internet. So, we can use a well-defined command for more safely access. you can download here Nmap tool. there are various options for network scanning.