Firewall
Browse all articles, tutorials, and guides about Firewall
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Networking
2025-04-10|7 min read
What is the Difference Between Active and Passive FTP?
Active and passive FTP differ in how the data connection is established. Learn how each mode works, when to use them, and how they interact with firewalls and NAT.
Networking
2025-03-28|7 min read
How to Close TCP and UDP Ports via Windows Command Line
Learn how to close open ports on Windows using command-line tools. Find and terminate processes listening on ports, manage Windows Firewall rules, and stop services to free up ports.
Linux
2024-12-05|8 min read
How to Close Specific Ports on Linux Systems
Learn how to close and block specific ports on Linux using iptables, ufw, firewalld, and by stopping services. Secure your system by controlling port access.