[Free] Linux Network Troubleshooting Commands (Ccna/Devops)

Learn how to troubleshoot Linux-based network connectivity and network servers – Free Course

Added on February 19, 2025 IT & Software 2 min read

What you’ll learn

Learn how to troubleshoot Linux-based network devices and servers
Learn networking commands to analyze configuration and operational state
Learn how to edit configuration files easily with Nano editor
Learn how to analyze system performance and network packets

Requirements

Some basic networking knowledge is required

Description

This course is an introduction to network troubleshooting Linux-based devices and servers. Learn how to verify server interface settings, routing, and DNS. You will also learn how to configure network interfaces. Troubleshoot TCP/UDP connection with open port testing and socket statistics command.

It is common to have network servers and devices deployed to the data center. They are all based on some Linux derived version. Currently 90% of the top 1 million internet servers are Linux-based. Ansible and Terraform referred to as Infrastructure as Code (IaC) are often deployed to Linux servers. In this course you will learn Linux system and file management navigation commands.

Learn how to troubleshoot Linux-based network devices and servers to the network layer.
Learn important networking commands to analyze configuration and operational state.
Learn how to edit networking and system configuration files easily with Nano editor.
Learn how to analyze system performance and network traffic with Linux commands.

There are also networking commands for troubleshooting up to Layer 3 with Debian v.12 host and Ubuntu v.20 server. There are network management applications deployed to servers in the cloud and on-premise data centers for Syslog, SNMP, DHCP, DNS, NTP, and RADIUS.

System Commands

System Information
Security Rights
Change Directory
Display File Contents
Nano Configuration Editor
Grep File Search

Networking Commands

TCP/IP Model
Interface Status
Data Link Connection
Server IP Addressing
DNS hostname testing
Server Open Port Testing
Firewall Operation
Linux Commands Cheat Sheet

CISCONET Training Solutions is a certification training provider with thousands of students worldwide. Training expert with 25+ years of experience, CCNA author, and Cisco spotlight awards. The integrated learning system includes online courses, lab training, study tools, and practice tests.

CCST • CCNA • CCNP • IT/Networking

Author(s): Shaun Hummel

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