Nmap is a command line tool for network exploration or security auditing.
| Tutorial details | |
|---|---|
| Difficulty level | Easy |
| Root privileges | Yes |
| Requirements | None |
| Est. reading time | N/A |
This page shows how to install nmap command on a Debian or Ubuntu Linux based system.
Installation
To install nmap for Debian and Ubuntu Linux based server systems type the following apt command or apt-get command:
$ sudo apt-get install nmap
Sample outputs:
Reading package lists... Done Building dependency tree Reading state information... Done The following additional packages will be installed: liblinear3 ndiff python-bs4 python-html5lib python-lxml python-webencodings Suggested packages: liblinear-tools liblinear-dev python-genshi python-lxml-dbg python-lxml-doc The following NEW packages will be installed: liblinear3 ndiff nmap python-bs4 python-html5lib python-lxml python-webencodings 0 upgraded, 7 newly installed, 0 to remove and 0 not upgraded. Need to get 6,518 kB of archives. After this operation, 29.4 MB of additional disk space will be used. Do you want to continue? [Y/n] y Get:1 http://in.archive.ubuntu.com/ubuntu artful/main amd64 liblinear3 amd64 2.1.0+dfsg-2 [39.3 kB] Get:2 http://in.archive.ubuntu.com/ubuntu artful/main amd64 python-bs4 all 4.6.0-1 [67.9 kB] Get:3 http://in.archive.ubuntu.com/ubuntu artful/main amd64 python-webencodings all 0.5-2 [10.3 kB] Get:4 http://in.archive.ubuntu.com/ubuntu artful/main amd64 python-html5lib all 0.999999999-1 [83.6 kB] Get:5 http://in.archive.ubuntu.com/ubuntu artful/main amd64 python-lxml amd64 4.0.0-1 [1,120 kB] Get:6 http://in.archive.ubuntu.com/ubuntu artful/main amd64 ndiff all 7.60-1ubuntu1 [20.4 kB] Get:7 http://in.archive.ubuntu.com/ubuntu artful/main amd64 nmap amd64 7.60-1ubuntu1 [5,176 kB] Fetched 6,518 kB in 22s (284 kB/s) Selecting previously unselected package liblinear3:amd64. (Reading database ... 196139 files and directories currently installed.) Preparing to unpack .../0-liblinear3_2.1.0+dfsg-2_amd64.deb ... Unpacking liblinear3:amd64 (2.1.0+dfsg-2) ... Selecting previously unselected package python-bs4. Preparing to unpack .../1-python-bs4_4.6.0-1_all.deb ... Unpacking python-bs4 (4.6.0-1) ... Selecting previously unselected package python-webencodings. Preparing to unpack .../2-python-webencodings_0.5-2_all.deb ... Unpacking python-webencodings (0.5-2) ... Selecting previously unselected package python-html5lib. Preparing to unpack .../3-python-html5lib_0.999999999-1_all.deb ... Unpacking python-html5lib (0.999999999-1) ... Selecting previously unselected package python-lxml. Preparing to unpack .../4-python-lxml_4.0.0-1_amd64.deb ... Unpacking python-lxml (4.0.0-1) ... Selecting previously unselected package ndiff. Preparing to unpack .../5-ndiff_7.60-1ubuntu1_all.deb ... Unpacking ndiff (7.60-1ubuntu1) ... Selecting previously unselected package nmap. Preparing to unpack .../6-nmap_7.60-1ubuntu1_amd64.deb ... Unpacking nmap (7.60-1ubuntu1) ... Processing triggers for libc-bin (2.26-0ubuntu2) ... Setting up python-bs4 (4.6.0-1) ... Setting up python-lxml (4.0.0-1) ... Processing triggers for man-db (2.7.6.1-2) ... Setting up liblinear3:amd64 (2.1.0+dfsg-2) ... Setting up python-webencodings (0.5-2) ... Setting up nmap (7.60-1ubuntu1) ... Setting up ndiff (7.60-1ubuntu1) ... Setting up python-html5lib (0.999999999-1) ... Processing triggers for libc-bin (2.26-0ubuntu2) ...
Examples
To find the nmap version, enter:
# nmap -V
OR
# nmap --version
Sample outputs:
Nmap version 7.60 ( https://nmap.org ) Platform: x86_64-pc-linux-gnu Compiled with: liblua-5.3.3 openssl-1.0.2g nmap-libssh2-1.8.0 libz-1.2.8 libpcre-8.39 libpcap-1.8.1 nmap-libdnet-1.12 ipv6 Compiled without: Available nsock engines: epoll poll select
So I am using namp version 7.60 on a Ubuntu Linux.
To scan an IP address, enter:
# nmap 192.168.1.2
OR
$ sudo nmap 192.168.1.1
Sample outputs:
[sudo] password for vivek: Starting Nmap 7.60 ( https://nmap.org ) at 2017-11-08 13:53 IST Nmap scan report for gateway (192.168.1.1) Host is up (0.23s latency). Not shown: 994 closed ports PORT STATE SERVICE 21/tcp open ftp 22/tcp open ssh 23/tcp open telnet 53/tcp open domain 80/tcp open http 5431/tcp open park-agent MAC Address: 10:62:EB:6A:DB:FD (D-Link International) Nmap done: 1 IP address (1 host up) scanned in 4.65 seconds
To scan a range of IP addresses, enter:
# nmap 192.168.1.2-10
To scan an entire subnet:
# nmap 192.168.1.0/24
More examples:
## Ping only scan ## nmap -sP 192.168.1.2 ## Scan and do traceroute ## nmap --traceroute IP-ADDRESS nmap --traceroute DOMAIN-NAME-HERE ## TCP SYN Scan ## nmap -sS 192.168.1.2 ## UDP Scan ## nmap -sU 192.168.1.2 ## IP protocol scan ## nmap -sO 192.168.1.2 ## Scan port 80, 25, 443 ## nmap -p 80 192.168.1.2 nmap -p http 192.168.1.2 nmap -p 25 192.168.1.2 nmap -p smtp 192.168.1.2 nmap -p 443 192.168.1.2 nmap -p 80,24,443 192.168.1.2 ## Scan port ranges ## nmap -p 512-1024 192.168.1.2 ## Scan for OS i.e. Operating System Detection ## nmap -O 192.168.1.2 nmap -O --osscan-guess 192.168.1.2 ## Scan for application server version ## nmap -sV 192.168.1.2
Type the following command to read nmap man page or see our 32 nmap command examples:
$ man nmap
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