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Linux Networking and Troubleshooting


Getting Started:
Course Overview
About the Training Architect
Machine Interface
Using the Network Environment Interface Tools (ip, nmcli, and more)

Network Topology:
Basic Network Topology
OSI Layers
Anatomy of an IP Address

Network Flow:
Routing
Address Resolution Protocol (ARP)
DNS
TCP and the Basic Handshake
Packet Flow
VPN

Network Interface:
Static IP versus DHCP
Multiple IP Addresses
NIC Bonding and Teaming


Routing:
Static Routes
Troubleshooting

Domain Name Service (DNS):
Local Name Resolution
Name Servers
Troubleshooting DNS

Firewalls:
Firewalls Explained
iptables
firewalld
Troubleshooting the Firewall

Connection Troubleshooting:
Connection Testing
Packet Captures

Port Forwarding:
Port Forwarding Explained
Port Forwarding Examples

SSH Tunnelling:
Explaining the SSH Tunnel
Creating an SSH Tunnel

Proxy Servers:
Proxy Servers Explained
Setting up Squid

Load Balancing:
Load Balancing Explained
Load Balancing with HAProxy
Load Balancing with NGINX

VPN:
Setting up OpenVPN Part 1
Setting up OpenVPN Part 2
Hands-On Lab: Setup OpenVPN

IDS:
IDS Explained
Using Snort as an IDS

Final Steps:
What's Next?