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Duration 14 hours
Course Outline
Linux Router Core Concepts and Strategy
- Examining the function of a Linux router within office and laboratory settings
- Comprehending WAN, LAN, gateways, and fundamental traffic patterns
- Identifying necessary interfaces, packages, and deployment prerequisites
- Strategizing IP addressing, interface roles, and router services
Configuring Network Interfaces Using Netplan
- Identifying and verifying network interfaces on the Linux host
- Configuring WAN and LAN interfaces with netplan
- Activating persistent IP forwarding for routing
Implementing Routing, NAT, and Basic Firewall Policies
- Understanding packet forwarding and source NAT in a router context
- Formulating iptables rules for NAT and LAN-to-WAN forwarding
- Permitting return traffic and basic administrative access
- Preserving and restoring firewall rules across system restarts
Providing DHCP and Local DNS via dnsmasq
- Installing and configuring dnsmasq for the LAN segment
- Defining DHCP ranges, gateway parameters, and upstream DNS settings
- Binding dnsmasq to the appropriate interface and verifying leases
- Testing client address allocation and name resolution
Testing, Debugging, and Security Hardening
- Confirming end-to-end connectivity from LAN clients to the WAN
- Utilizing standard Linux utilities to inspect routes, rules, interfaces, and services
- Diagnosing common issues related to forwarding, NAT, and DHCP
- Implementing basic operational and security best practices for the router host
Practical Construction and Assessment
- Assembling a functional custom Linux router from a defined scenario
- Verifying configuration persistence and service initialization behavior
- Assessing configuration files and recovery procedures
- Summarizing key takeaways and subsequent steps
Requirements
- Familiarity with fundamental TCP/IP networking concepts, such as IP addressing, subnetting, and default gateways
- Proficiency in basic Linux command-line administration and experience modifying configuration files
- General experience in Linux system administration
Target Audience
- Linux system administrators
- Network administrators
- IT support and infrastructure engineers
Testimonials (1)
communication, knowledge from experience, solve problems,
