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Google offers a free Cybersecurity course to help you build foundational knowledge in protecting systems, networks, and data from cyber threats. This course is ideal for beginners and professionals looking to upskill.
🔗 Course Link: Google Cybersecurity
You Should Know: Essential Cybersecurity Commands & Practices
Linux Security Commands
1. Check Open Ports
sudo netstat -tulnp
Identifies listening ports and associated services.
2. Scan for Vulnerabilities with Nmap
nmap -sV <target_IP>
Detects open ports and service versions.
3. Monitor Logs for Intrusions
sudo tail -f /var/log/auth.log
Tracks authentication attempts (Ubuntu/Debian).
4. Check User Login History
last
Shows recent logins and reboots.
5. Verify File Integrity (Hashing)
sha256sum <file>
Ensures files haven’t been tampered with.
Windows Security Commands
1. Check Active Network Connections
netstat -ano
2. Scan for Malware with Windows Defender
Start-MpScan -ScanType FullScan
3. Audit Failed Login Attempts
Get-EventLog -LogName Security -InstanceId 4625
4. Enable Firewall Logging
Set-NetFirewallProfile -LogFileName %systemroot%\system32\LogFiles\Firewall\pfirewall.log
Cybersecurity Best Practices
- Enable 2FA on all critical accounts.
- Patch Management:
sudo apt update && sudo apt upgrade -y Linux
- Password Policies: Enforce complexity via:
sudo vi /etc/pam.d/common-password
What Undercode Say
Mastering cybersecurity starts with understanding both offensive and defensive techniques. Google’s course provides structured learning, but hands-on practice with tools like Nmap, Wireshark, and Metasploit is crucial. Always:
– Monitor logs for anomalies.
– Use SSH keys instead of passwords.
– Regularly audit permissions (chmod, chown).
🔗 Additional Resources:
Expected Output:
A well-structured cybersecurity skill set, readiness for certifications (like CompTIA Security+), and the ability to secure systems proactively.
References:
Reported By: Vikas Singh – Hackers Feeds
Extra Hub: Undercode MoN
Basic Verification: Pass ✅
