// notes/
Coding tips and build notes by Mahir Faysal, a student web developer in Bangladesh: tested Python, HTML, CSS, JavaScript and PHP tutorials, plus notes from my Next.js and Gemini projects. Sample posts are marked and drafts stay in the admin area.
Nmap is a free, open-source network scanner that shows which devices are on a network and which ports and services they have open. Beginners should start with nmap -sn 192.168.1.0/24 to list devices on their own home network, then nmap 192.168.1.1 to check a single device.
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