Thank you for sending your enquiry! One of our team members will contact you shortly.
Thank you for sending your booking! One of our team members will contact you shortly.
Course Outline
Fundamentals and Planning for Linux Routers
- Examining the role of a Linux router in office and lab environments.
- Understanding WAN, LAN, gateways, and basic traffic flow.
- Identifying necessary interfaces, packages, and deployment prerequisites.
- Planning IP addressing, interface roles, and router services.
Configuring Network Interfaces with Netplan
- Locating and validating network interfaces on the Linux host.
- Setting up WAN and LAN interfaces using netplan.
- Enabling persistent IP forwarding for routing.
Implementing Routing, NAT, and Basic Firewall Rules
- Understanding packet forwarding and source NAT in a router context.
- Creating iptables rules for NAT and LAN-to-WAN forwarding.
- Permitting return traffic and basic administrative access.
- Saving and restoring firewall rules 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 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
- Constructing a functional custom Linux router based on a defined scenario.
- Validating configuration persistence and service startup behavior.
- Reviewing configuration files and recovery steps.
- Summarizing lessons learned and outlining next steps.
Requirements
- Familiarity with fundamental TCP/IP networking concepts, including IP addressing, subnets, and default gateways.
- Basic proficiency in Linux command-line administration and experience editing configuration files.
- General experience with Linux system administration.
Audience
- Linux system administrators.
- Network administrators.
- IT support and infrastructure engineers.
14 Hours
Testimonials (1)
communication, knowledge from experience, solve problems,
