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Duration 14 hours
Course Outline
Linux Router Fundamentals and Planning
- Examining the role of a Linux router in office and lab settings.
- Comprehending WAN, LAN, gateways, and basic traffic flows.
- Identifying necessary interfaces, packages, and deployment prerequisites.
- Planning IP addressing, interface roles, and router services.
Configuring Network Interfaces with Netplan
- Identifying and verifying 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 within a router configuration.
- Creating iptables rules for NAT and LAN-to-WAN traffic forwarding.
- Permitting return traffic and basic administrative access.
- Ensuring firewall rules persist 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 verifying leases.
- Testing client address assignment and name resolution.
Testing, Troubleshooting, and Hardening
- Confirming end-to-end connectivity from LAN clients to the WAN.
- Utilizing standard Linux tools to inspect routes, rules, interfaces, and services.
- Addressing common issues related to forwarding, NAT, and DHCP.
- Applying basic operational and security best practices for the router host.
Hands-on Build and Review
- Constructing a functional custom Linux router based on a defined scenario.
- Validating configuration persistence and service startup behavior.
- Reviewing configuration files and recovery procedures.
- Summarizing key takeaways and recommended next steps.
Requirements
- A solid grasp of fundamental TCP/IP networking, including IP addressing, subnets, and default gateways.
- Proficiency in basic 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.
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 2900 € + VAT*
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