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Duration 14 hours
Course Outline
Linux Router Fundamentals and Strategic Planning
- Examining the operational role of a Linux router within office and laboratory contexts
- Analyzing Wide Area Network (WAN), Local Area Network (LAN), gateway functions, and fundamental traffic routing
- Specifying essential interfaces, software packages, and deployment prerequisites
- Designing IP addressing schemes, interface assignments, and router service configurations
Network Interface Configuration via Netplan
- Discovering and verifying network interfaces on the Linux host system
- Configuring WAN and LAN interfaces using Netplan directives
- Activating persistent IP forwarding capabilities for routing operations
Implementing Routing, NAT, and Fundamental Firewall Controls
- Comprehending packet forwarding mechanics and source Network Address Translation (NAT) in router architectures
- Establishing iptables rules for NAT and LAN-to-WAN traffic forwarding
- Permitting return traffic and essential administrative access
- Persisting firewall rules to ensure consistency across system reboots
Provisioning DHCP and Local DNS Services via dnsmasq
- Installing and configuring dnsmasq for the Local Area Network segment
- Defining DHCP address pools, gateway parameters, and upstream DNS settings
- Binding dnsmasq to the designated interface and validating lease assignments
- Testing client IP address acquisition and name resolution processes
Testing, Diagnostics, and System Hardening
- Validating end-to-end connectivity from LAN clients to the WAN edge
- Employing standard Linux utilities to inspect routing tables, firewall rules, interfaces, and services
- Diagnosing and resolving common issues related to forwarding, NAT, and DHCP services
- Implementing fundamental operational and security best practices for router hosts
Practical Implementation and Post-Configuration Review
- Constructing a functional custom Linux router based on a defined scenario
- Verifying configuration persistence and service startup behaviors
- Auditing configuration files and documenting recovery procedures
- Summarizing key takeaways and identifying subsequent steps
Requirements
- Proficiency in basic TCP/IP networking concepts, including IP addressing, subnetting, and default gateway configuration
- Familiarity with basic Linux command-line administration and experience editing configuration files
- General experience in Linux system administration
Audience
- Linux system administrators
- Network administrators
- IT support and infrastructure engineers
Testimonials (1)
communication, knowledge from experience, solve problems,