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Course Outline
Linux Router Fundamentals and Planning
- Reviewing the role of a Linux router in office and lab environments
- Understanding WAN, LAN, gateway, and basic traffic flow
- Identifying required interfaces, packages, and deployment assumptions
- Planning IP addressing, interface roles, and router services
Configuring Network Interfaces with Netplan
- Identifying and validating network interfaces on the Linux host
- Configuring WAN and LAN interfaces with netplan
- Enabling persistent IP forwarding for routing
Implementing Routing, NAT, and Basic Firewall Rules
- Understanding packet forwarding and source NAT in a router setup
- Creating iptables rules for NAT and LAN-to-WAN forwarding
- Allowing return traffic and basic administrative access
- Saving and restoring firewall rules across reboots
Providing DHCP and Local DNS with dnsmasq
- Installing and configuring dnsmasq for the LAN segment
- Defining DHCP ranges, gateway options, and upstream DNS settings
- Binding dnsmasq to the correct interface and validating leases
- Testing client address assignment and name resolution
Testing, Troubleshooting, and Hardening
- Verifying end-to-end connectivity from LAN clients to the WAN
- Using common Linux tools to inspect routes, rules, interfaces, and services
- Troubleshooting common issues with forwarding, NAT, and DHCP
- Applying basic operational and security good practices for a router host
Hands-on Build and Review
- Building a working custom Linux router from a defined scenario
- Validating configuration persistence and service startup behavior
- Reviewing configuration files and recovery steps
- Summarizing lessons learned and next steps
Requirements
- Understanding of basic TCP/IP networking, including IP addressing, subnets, and default gateways
- Basic Linux command-line administration and experience editing configuration files
- General Linux system administration experience
Audience
- Linux system administrators
- Network administrators
- IT support and infrastructure engineers
14 Hours
Custom Corporate Training
Training solutions designed exclusively for businesses.
- Customized Content: We adapt the syllabus and practical exercises to the real goals and needs of your project.
- Flexible Schedule: Dates and times adapted to your team's agenda.
- Format: Online (live), In-company (at your offices), or Hybrid.
Price per private group, online live training, starting from 2600 € + VAT*
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Testimonials (2)
communication, knowledge from experience, solve problems,
Marcin Walewski - Intel Technology Poland Sp. z o.o.
Course - OpenStack Bootcamp
The virtual desktop in a browser feature was kind of neat.
