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How to Change SSH Default Port and Whitelist a Specific IP on Ubuntu (Step-by-Step Guide)

Securing your Linux server is one of the most important tasks for any system administrator. By default, SSH runs on port 22, which is constantly scanned by bots and automated attacks. Two simple but highly effective ways to strengthen your SSH security are: ✅ Changing the default SSH port✅ Whitelisting a trusted IP so only […]

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