Skip to main content

Decoding Connections: A Guide to Mastering netstat Commands on Linux

netstat Commands: A Comprehensive Guide

Aim :

Learn how to use netstat commands to display active network connections and listening ports on a Linux system.

netstat Commands: A Step-by-Step Guide

netstat is a command-line tool that provides information about network connections, routing tables, interface statistics, masquerade connections, and more. Follow these steps to use netstat for network analysis on your Linux system.

Guidance on How to Use:

Prerequisite:

Ensure that netstat is installed on your Linux system. You can install it using the package manager specific to your distribution.

netstat Commands:

  • Show listening ports with process information: 
    netstat -nlpt
    This command displays all listening ports along with the associated processes and their PIDs.
  • List all listening ports: 
    netstat -tuln
  • Show all established connections: 
    netstat -tn
  • Display network statistics for all interfaces: 
    netstat -s
  • Show detailed information about all connections and listening ports: 
    netstat -a
  • Display routing table information: 
    netstat -r
  • Show listening ports with process information: 
    netstat -tulpn
  • Display only IPv4 connections: 
    netstat -4
  • Display only IPv6 connections: 
    netstat -6
  • Show PID and program name for each connection: 
    netstat -tp

Verification:

Verify the active connections and listening ports by running various netstat commands based on your requirements.

Written by: A.M.Rinas

Contact: mohomadrinas00@gmail.com

Comments

Post a Comment

Popular posts from this blog

MySQL 8.0 Binary Installation: A Step-by-Step Guide

MySQL 8.0 Installation: A Comprehensive Guide Aim : Install MySQL 8.0 using the binary distribution on a Linux system. MySQL 8.0 Installation Steps Step 1: Prepare System and User Create a MySQL group: groupadd mysql Create a MySQL user with restricted shell access: useradd -r -g mysql -s /bin/false mysql Step 2: Download and Extract MySQL Navigate to the installation directory(Not compulsory): cd /usr/local Extract the MySQL tarball: tar xvf /path/to/mysql-VERSION-OS.tar.xz Create a symbolic link: ln -s full-path-to-mysql-VERSION-OS mysql Navigate to the MySQL directory: cd mysql Create a directory for MySQL files: mkdir mysql-files Set ownership and permissio...
Post a Comment
Read more

Grafana Installation on Ubuntu using Docker

Grafana Installation on Ubuntu using Docker Aim : Install Grafana OSS (open-source version) on Ubuntu using Docker. Grafana Installation Steps Step 1: Pull and Run the Grafana Container Pull and start the Grafana container: sudo docker run -d -p 3000:3000 --name=grafana grafana/grafana-oss -d : Detaches the container and runs it in the background. -p 3000:3000 : Maps port 3000 on your host machine to port 3000 inside the container, enabling access to Grafana's web interface. --name=grafana : Specifies the name of the container as grafana . Step 2: Access Grafana Once the container is running, access Grafana by opening a web browser and navigating to: http://localhost:3000 If Grafana is running on a remote serv...
Post a Comment
Read more

Install Tomcat on Linux using binary distribution

Install Tomcat on Linux Aim: In this tutorial, we will install Tomcat 9.0.21 on Linux. Step 1: Installing JDK Tomcat 9 requires Java 8 or later versions. Check Java installation: $ java -version If Java is not installed, run the following commands to install Java: $ sudo apt-get update $ sudo apt-get install default-jdk -y After installation, verify Java installation: $ java -version Step 2: Creating a Tomcat user and group Create a group and user for Tomcat: $ sudo groupadd tomcat $ sudo useradd -s /bin/false -g tomcat -d /opt/tomcat tomcat Step 3: Download and Install Tomcat 9 Change directory to /opt and download Tomcat 9 to that directory: $ cd /opt $ sudo wget https:/...
Post a Comment
Read more