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Linux Networking Fundamentals

This Linux Networking course focuses on understanding, configuring, and managing Linux networking. Participants learn foundational concepts, advanced configurations, and troubleshooting techniques to...

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Duration 3 days
Course Code WA3630
Available Formats Classroom

Overview

This Linux Networking course focuses on understanding, configuring, and managing Linux networking. Participants learn foundational concepts, advanced configurations, and troubleshooting techniques to manage network operations effectively.

Skills Gained

  • Understand Linux networking fundamentals, including interfaces, IP addressing, and routing.
  • Configure and manage networking services like DHCP, DNS, and firewalls.
  • Analyze and troubleshoot networking issues using Linux tools.
  • Secure Linux-based networks against common threats.
  • Implement advanced networking techniques, including VLANs, bonding, bridging, and VPNs.

Prerequisites

Students must have taken Linux System Administration or have equivalent experience.

Course Details

Introduction to Networking Concepts

  • Overview of the OSI Model
  • Understanding TCP/IP and its Components
  • Networking Protocols in Linux

Linux Networking Basics

  • Understanding Network Interfaces
  • Tools for Managing Network Interfaces
  • Configuring Static and Dynamic IPs
  • Basics of Subnetting and CIDR Notation
  • Setting Up Hostnames and Editing

Routing and ARP

  • Default Gateways and Static Routes
  • Viewing and Managing the Routing Table (route, ip route)
  • Understanding ARP and using arp and ip neigh

Configuring Networking Services

  • Setting Up a DHCP Server with isc-dhcp-server
  • Configuring a Local DNS Server with bind9
  • Introduction to Web Servers (Apache/Nginx Basics) for Testing

Firewall Configuration and NAT

  • Introduction to Firewalls: iptables vs nftables
  • Creating Basic Firewall Rules (Allow/Deny Traffic)
  • Configuring Network Address Translation (NAT)
  • Port Forwarding Examples

Networking Tools for Analysis and Monitoring

  • Packet Sniffing and Analysis with tcpdump and Wireshark
  • Monitoring Network Traffic with iftop, iptraf, and nload
  • Using netstat and ss for Active Connection Tracking

Advanced Networking Techniques

  • Setting Up VLANs with vconfig or ip link
  • Network Bonding for Redundancy (mode 0 vs mode 1)
  • Configuring Network Bridges for Virtual Machines
  • Deploying VPNs with OpenVPN and WireGuard

Securing Linux Networks

  • Hardening SSH
  • Protecting Against Brute-Force Attacks
  • Using tcp_wrappers and ufw for Service-Specific Restrictions
  • DoS/DDoS Prevention (Rate Limiting with iptables)

Troubleshooting Linux Networks

  • Diagnosing Connection Issues (ping, traceroute, mtr)
  • Debugging DNS Problems (dig, nslookup)
  • Checking Interface and Link Status (ethtool, ip link)
  • Comprehensive System Logs Analysis

Conclusion

Schedule

FAQ

Does the course schedule include a Lunchbreak?

Classes typically include a 1-hour lunch break around midday. However, the exact break times and duration can vary depending on the specific class. Your instructor will provide detailed information at the start of the course.

What languages are used to deliver training?

Most courses are conducted in English, unless otherwise specified. Some courses will have the word "FRENCH" marked in red beside the scheduled date(s) indicating the language of instruction.

What does GTR stand for?

GTR stands for Guaranteed to Run; if you see a course with this status, it means this event is confirmed to run. View our GTR page to see our full list of Guaranteed to Run courses.

Does Ascendient Learning deliver group training?

Yes, we provide training for groups, individuals and private on sites. View our group training page for more information.

What does vendor-authorized training mean?

As a vendor-authorized training partner, we offer a curriculum that our partners have vetted. We use the same course materials and facilitate the same labs as our vendor-delivered training. These courses are considered the gold standard and, as such, are priced accordingly.

Is the training too basic, or will you go deep into technology?

It depends on your requirements, your role in your company, and your depth of knowledge. The good news about many of our learning paths, you can start from the fundamentals to highly specialized training.

How up-to-date are your courses and support materials?

We continuously work with our vendors to evaluate and refresh course material to reflect the latest training courses and best practices.

Are your instructors seasoned trainers who have deep knowledge of the training topic?

Ascendient Learning instructors have an average of 27 years of practical IT experience and have also served as consultants for an average of 15 years. To stay current, instructors spend at least 25 percent of their time learning new, emerging technologies and courses.

Do you provide hands-on training and exercises in an actual lab environment?

Lab access is dependent on the vendor and the type of training you sign up for. However, many of our top vendors will provide lab access to students to test and practice. The course description will specify lab access.

Will you customize the training for our company’s specific needs and goals?

We will work with you to identify training needs and areas of growth.  We offer a variety of training methods, such as private group training, on-site of your choice, and virtually. We provide courses and certifications that are aligned with your business goals.

How do I get started with certification?

Getting started on a certification pathway depends on your goals and the vendor you choose to get certified in. Many vendors offer entry-level IT certification to advanced IT certification that can boost your career. To get access to certification vouchers and discounts, please contact info@ascendientlearning.com.

Will I get access to content after I complete a course?

You will get access to the PDF of course books and guides, but access to the recording and slides will depend on the vendor and type of training you receive.

How do I request a W9 for Ascendient Learning?

View our filing status and how to request a W9.

Reviews

Class was very informative, although one lab didnt but will try again later

Brandon was a great instructor. The virtual course materials and labs provided were very informative.

ExitCertified gave a great course on AWS that covered all of the basics in depth with good lab materials.

Courseware was effective but would like to have some PDF material on BPML and XPATH

it was good and very informative. Instructure covered everything in detail.