SMRTR summary
A battle-tested checklist for hardening a Debian server: configure DNS, create a non-root user, set up SSH key auth, firewall rules, auto-updates, fail2ban, and Let's Encrypt HTTPS.
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A hands-on Python tutorial breaks down neural networks into simple steps—predict, measure error, adjust, repeat—covering backpropagation, gradient descent, and PyTorch basics...
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