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Jexal

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May 30th, 2025
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  1. Securing vulnerable ports is crucial for network protection. Since you're skilled in scripting and automation, you can integrate custom monitoring and defensive mechanisms. Here are key strategies:
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  3. ### **General Security Measures**
  4. - **Firewall Configuration**: Block unnecessary ports and allow only trusted sources. Fine-tune inbound/outbound rules.
  5. - **Strong Authentication**: Use SSH keys instead of passwords (for Port 22) and enforce multi-factor authentication for RDP (Port 3389).
  6. - **Disable Unused Services**: If a service isn’t required, close its port to minimize attack vectors.
  7. - **Patch Management**: Regularly update software to fix known vulnerabilities, especially for SMB (Port 445) and MySQL (Port 3306).
  8. - **Restrict Remote Access**: Limit external connections for critical services (like RDP and SQL servers) through VPNs or zero-trust architectures.
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  10. ### **Advanced Mitigation Techniques**
  11. - **Intrusion Detection & Prevention Systems (IDS/IPS)**: Implement tools like Suricata or Snort to monitor and block malicious activity.
  12. - **Rate Limiting & Connection Throttling**: Prevent brute-force attacks on SSH and RDP by limiting login attempts and using fail2ban.
  13. - **DNS Security Enhancements**: Protect Port 53 from spoofing with DNSSEC and prevent amplification attacks using rate-limiting.
  14. - **Web Server Hardening**: Secure Port 80/443 by using HTTP headers, setting up Web Application Firewalls (WAF), and mitigating common attacks (XSS, SQL injection).
  15. - **Segmentation & Network Isolation**: Use VLANs to isolate services and restrict lateral movement by attackers.
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  17. ### **Scripting-Based Defense**
  18. Since you’re proficient in Python and error handling, consider scripting automated port scans and anomaly detection:
  19. - Use `nmap` or `socket` to track open ports dynamically.
  20. - Implement real-time logging with `rich` or `colorama` for visibility.
  21. - Set up a scheduled task to compare historical scan results and detect new openings.
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