Computer networks are the backbone of modern IT systems. Without understanding them, there's no security, no performance, and no scalability. TLDR+ Networking is a practical, concise guide to essential networking concepts - with no fluff, just real commands, examples, and hands-on scenarios every engineer will recognize.
This isn't an academic book. It's a working tool, built for:
system and network administrators,
security professionals,
students in technical fields,
anyone who wants to understand how networks actually work - from physical layers to firewall rules.
Inside you'll find:
the fundamentals of TCP/IP, ARP, and DNS,
static and dynamic configuration (including DHCP),
traffic analysis (routing, traceroute, netstat),
VLANs and network segmentation (with Linux and Cisco examples),
VPN configuration (PPTP, L2TP, WireGuard),
local and network firewalls (iptables, Windows Firewall, UFW),
troubleshooting and monitoring with both CLI and GUI tools.
Each chapter is a fast knowledge pill:
commands + explanations + real-world usage.
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