Using netstat utility in Linux it is possible to see not only opened connections, but also to see which ports are open at current connection.
To do so, type: netstat –nap
use netstat –help for more information.
Using netstat utility in Linux it is possible to see not only opened connections, but also to see which ports are open at current connection.
To do so, type: netstat –nap
use netstat –help for more information.
To check open ports on your Linux system you will need following package: nmap
Debian/Ubuntu got his package in standard repository already for ages.
Installing the nmap.
To have simple check play with your local host IP, usually it’s 127.0.0.1. To do so, type: nmap -sS -O 127.0.0.1
In this example it’s clear which port are open:
22/tcp open ssh
139/tcp open netbios-ssn
445/tcp open microsoft-ds
3306/tcp open mysql
10000/tcp open snet-sensor-mgmt