Protecting Your macOS: How to Find Exactly Which IPs Are Trying to Attack Your System (And Stop Them)

📰 Dev.to · Bhupesh Chandra Joshi

Learn to identify and block malicious IPs attacking your macOS system using built-in tools and techniques

intermediate Published 20 Apr 2026
Action Steps
  1. Open Terminal on your macOS system to access the command-line interface
  2. Run the command 'netstat -an | grep LISTEN' to view all listening ports and associated IPs
  3. Use the command 'lsof -i' to list all internet sockets and identify suspicious IPs
  4. Configure your macOS firewall to block malicious IPs using the 'pfctl' command
  5. Test your firewall rules using the 'pfctl -s rules' command to ensure they are working correctly
Who Needs to Know This

Security teams and macOS administrators can benefit from this knowledge to enhance system security and prevent potential attacks

Key Insight

💡 Using built-in macOS tools like Terminal and firewall configuration, you can identify and block malicious IPs attempting to attack your system

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🚨 Protect your macOS from IP attacks! Learn how to identify & block malicious IPs using Terminal commands 💻
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