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Security

System Hardening Reference

🛡️ Antivirus

CommandDescription
Windows DefenderBuilt-in AV for Windows
ClamAVOpen-source AV for Linux/macOS
sudo freshclamUpdate ClamAV signatures
sudo clamscan -r /homeScan directory recursively

🔥 Firewall

CommandDescription
netsh advfirewallWindows firewall CLI
ufw enableEnable firewall (Linux)
ufw allow 443Allow HTTPS traffic
pfctlmacOS firewall control

🔐 Encryption

CommandDescription
BitLockerDrive encryption (Windows)
FileVaultmacOS disk encryption
LUKSLinux disk encryption
gpg --encryptEncrypt files with GPG

🔑 MFA & Access

CommandDescription
Microsoft AuthenticatorMFA app for Windows login
Google AuthenticatorMFA app for Linux/macOS
ssh-keygenGenerate SSH key pair
chmod 600 ~/.ssh/id_rsaSecure private key