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Course Outline
Linux Router Fundamentals and Planning
- Reviewing the function of a Linux router in office and lab settings
- Understanding WAN, LAN, gateway, and fundamental traffic flow
- Identifying necessary interfaces, packages, and deployment requirements
- 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 using Netplan
- Enabling persistent IP forwarding for routing purposes
Implementing Routing, NAT, and Basic Firewall Rules
- Understanding packet forwarding and source NAT in a router configuration
- Creating iptables rules for NAT and LAN-to-WAN forwarding
- Allowing return traffic and basic administrative access
- Saving and restoring firewall rules across system 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 appropriate 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
- Utilizing common Linux tools to inspect routes, rules, interfaces, and services
- Troubleshooting common issues with forwarding, NAT, and DHCP
- Applying basic operational and security best practices for a router host
Hands-on Build and Review
- Building a functional custom Linux router based on a defined scenario
- Validating configuration persistence and service startup behavior
- Reviewing configuration files and recovery steps
- Summarizing key takeaways and next steps
Requirements
- Foundational knowledge of TCP/IP networking, including IP addressing, subnets, and default gateways
- Basic proficiency in Linux command-line administration and experience with configuration file editing
- General experience in Linux system administration
Target Audience
- Linux system administrators
- Network administrators
- IT support and infrastructure engineers
14 Hours
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.
