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Cybersecurity Fundamentals / Network Security

Firewall allowlist

Learn Firewall allowlist in Cybersecurity Fundamentals with a focused explanation, a topic-specific example, edge guidance, and a mastery check.

12 min read • Intermediate
cybersecurity-041.txt
text
sudo ufw default deny incoming
sudo ufw allow from 192.0.2.0/24 to any port 22 proto tcp
sudo ufw allow 443/tcp
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