Networking Fundamentals

Core concepts for understanding Linux networking and packet flow.

In This Section

• Linux Networking - How packets flow through the kernel
• Netfilter - The kernel's packet filtering framework
• iptables - Tables, chains, and rule processing
• nftables - The modern netfilter frontend
• Namespaces - Container and VM network isolation

See Also

• UFW - Uncomplicated Firewall
• Docker Networking - Container networking
• KVM Networking - VM networking