18 articles
Squeeze every megabit out of your connection. Master the art of Linux network optimization. Learn to tune TCP 'Backlogs', increase 'Window Sizes' for high-latency links, and understand the logic of 'Congestion Control' (BBR).
Warp through firewalls and surf securely. Master the art of SSH Tunneling. Learn Local Port Forwarding to access private databases, Remote Port Forwarding to share your local work, and Dynamic SOCKS proxies to encrypt your entire web experience.
See the invisible packets. Master the tools for deep network inspection. Learn to use 'tcpdump' for terminal-based capture, 'Wireshark' for visual analysis, and 'nmap' for security auditing and port scanning.
Bridge the distance. Learn to connect remote servers securely across the public internet. Master 'WireGuard', the modern, fast, and simple VPN standard. Explore 'OpenVPN' for enterprise scale and understand the logic of Tun/Tap interfaces.
Master the architecture of high-availability networking. Learn to use 'Bonding' to combine multiple network cards into a single, faster, and redundant link. Explore 'VLANs' to separate your traffic without adding more physical wires.
How does a hundred servers talk to the internet using just one IP address? Master the mechanics of Network Address Translation (NAT) and Masquerading. Learn to turn a Linux box into a router for your home or office.
Cross the boundaries of your local network. Learn how Linux handles traffic between different subnets. Master the 'ip route' command, understand how to configure static routes for internal clusters, and learn the logic of the routing table.
Stop relying on DHCP. Learn to configure permanent network settings on Linux. Master the modern Netplan (YAML) configuration for Ubuntu and the powerful NetworkManager (nmcli) for enterprise distros.
How does your server distinguish between a web visitor and an SSH admin? Master the world of Network Ports. Learn to use 'ss' and 'netstat' to identify which programs are listening, and learn to troubleshoot 'Address already in use' errors.
How does Linux find its way on the web? Master the local override file /etc/hosts and the system resolver config /etc/resolv.conf. Learn the order of operations for DNS lookups and how to troubleshoot 'Temporary failure in name resolution'.
Master the essential tools for network diagnosis. Learn the modern 'ip' suite that replaced ifconfig. Understand how to use ping for connectivity, traceroute for path analysis, and identify network interface naming conventions.
Master the language of the internet. Understand the architecture of IPv4, the logic of Subnet Masks, and the role of the Default Gateway. Learn to calculate CIDR ranges and understand why 127.0.0.1 is the most important address in your career.
Air-gapping the brain. Learn how to use VNETs, VPCs, and Firewalls to ensure your AI infrastructure is never exposed to the public internet.
Stop using IP addresses. Master Docker's internal DNS system to allow your containers to find and talk to each other using simple human-readable names.
Master the 'Zero Trust' model for containers. Learn how to encrypt inter-container traffic and use network policies to prevent unauthorized lateral movement.
Laying the groundwork. Build the complex Docker Compose and networking YAML that will power the GlobalHealth Connect platform.
Connecting the dots automatically. Learn how Docker Compose handles networking and persistent storage, making complex configurations simple.
Think like Kubernetes. Learn how to use Podman to group related containers into 'Pods', allowing them to share resources and network namespaces like a production cluster.