ViniciusMuniz.com - Programação, linux e afins.
ViniciusMuniz.com - Programação, linux e afins.
  • Linux
  • PHP
  • Contact
CentOS, Debian, Linux, Subversion, Ubuntu, Uncategorized

Discovering doors open server with nmap

August 22, 2013by viniciusNo Comments

nmap-project-logo

Hello, after a long time without writing, I finally found the time.

And in another tutorial, we’ll learn how discover open ports or closed on a server, computer …

nmap

For this task, we use the command nmap .

According to nmap’s own description, the application is:


Nmap (“Network Mapper”) is an open source tool for network exploration and security auditing. It was designed to track (Scan) large networks quickly yet works well with a single host (host). Nmap uses raw IP packets in (raw) on new ways to determine what hosts (hosts) are available on the net …

For more details you can find in http://nmap.org/ . I like to use nmap, but it does not mean that this is the only way to accomplish this task.

Listing the main server ports

The simplest of commands, just run nmap to the server that you want to investigate

nmap test.com

Listing the main server ports in more detail

nmap -s test.com

Verifying several machines on the network

Very useful for network administrators

Check certain ips
nmap 192.168.254.1 192.168.254.2 192.168.254.3
Verifying a track (one range) of IP’s
 nmap 192.168.254.1-10

Verifying a range using wildcard
nmap 192.168.254.*

Verifying a specific port

nmap -p [port] test.com

Verifying a range of ports

nmap -p 80-400 test.com

Again, this is not the only method of doing this scan. And you can find more about nmap the link: http://www.cyberciti.biz/networking/nmap-command-examples-tutorials/

  • English

Subscribe!

Thank you!

Recent Posts

  • What is Iptables, what it’s for, and how to use?
  • How to send a POST request without form
  • TTY: How to reduce the number of terminals and increase performance
  • TTY: What is? What’s the use? How to use it?
  • How to iterate through multidimensional array with php

Recent Comments

  • Vinicius Muniz on How to send a POST request without form
  • jeeja.biz (@jeejabiz) on How to send a POST request without form
  • a on How to send a POST request without form
  • Comandos linux que você deveria saber on 18 Linux commands you should know
  • TTY: How to reduce the number of terminals and increase performance on TTY: What is? What’s the use? How to use it?

Tags

array at date date in linux java java in ubuntu Linux Linux linux commands linux permissions mysql mysql.sock nmap ntp performance php php programming programming start php tips php ubuntu ubuntu languages zend zend framework zf zf2

Categories

  • CentOS
  • Debian
  • Linux
  • MySQL
  • PHP
  • Programming
  • Subversion
  • Ubuntu
  • Uncategorized

Meta

  • Log in
  • Entries feed
  • Comments feed
  • WordPress.org