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Duration 14 hours
Course Outline
Linux Router Fundamentals and Planning
- Examining the function of a Linux router in office and laboratory settings
- Comprehending WAN, LAN, gateways, and fundamental traffic flows
- Determining necessary interfaces, packages, and deployment prerequisites
- Planning IP addressing schemes, interface roles, and router services
Configuring Network Interfaces with Netplan
- Identifying and verifying network interfaces on the Linux host
- Setting up WAN and LAN interfaces using netplan
- Activating persistent IP forwarding for routing purposes
Implementing Routing, NAT, and Basic Firewall Rules
- Understanding packet forwarding and source NAT in a routing context
- Establishing iptables rules for NAT and LAN-to-WAN forwarding
- Permitting return traffic and basic administrative access
- Preserving and restoring firewall rules after system reboots
Providing DHCP and Local DNS with dnsmasq
- Installing and configuring dnsmasq for the LAN segment
- Specifying DHCP ranges, gateway parameters, and upstream DNS settings
- Attaching dnsmasq to the appropriate interface and verifying leases
- Testing client IP assignment and name resolution processes
Testing, Troubleshooting, and Hardening
- Confirming end-to-end connectivity from LAN clients to the WAN
- Employing standard Linux tools to examine routes, rules, interfaces, and services
- Resolving common issues related to forwarding, NAT, and DHCP
- Implementing basic operational and security best practices for the router host
Hands-on Build and Review
- Constructing a functional custom Linux router based on a specific scenario
- Verifying configuration persistence and service startup behavior
- Reviewing configuration files and recovery procedures
- Summarizing key takeaways and recommended next steps
Requirements
- Fundamental understanding of TCP/IP networking, including IP addressing, subnets, and default gateways
- Proficiency in basic Linux command-line administration and configuration file editing
- General experience with Linux system administration
Target Audience
- Linux system administrators
- Network administrators
- IT support and infrastructure engineers
Testimonials (1)
communication, knowledge from experience, solve problems,
