Secure Authentication

Secure Authentication

Leverage Synology DiskStation Manager's (DSM) best-in-class technologies to shield your data against unauthorized access and provide a smooth user experience at the same time.

Built-in security

Built-in security

Lock your Synology NAS against external threats.

Simplified login

Simplified login

Make authentication easier while keeping your data secure.

A solid foundation

Leverage Synology DSM's native security features to keep your admin and user accounts safe.

Password security

Set syntax rules and expiration dates for passwords to minimize the risk of login details being compromised.

Auto blocking

Block any IP addresses that make more than a set number of failed login attempts within a certain time.

Account protection

Prevent untrusted clients from accessing your Synology NAS by configuring a lockout threshold for failed login attempts.

Security alerts

Receive detailed email and mobile notifications whenever your system identifies suspicious logins.

A better login experience

Weak or reused passwords threaten the security of your Synology NAS. Complement or replace them with simpler yet secure methods of signing in.


Approve sign-in

Tap on a prompt in the Synology Secure SignIn app on your smartphone or tablet to approve sign-in requests. Login credentials are backed up to your Synology Account for easy recovery should you lose your device.

Approve sign-in

Biometric authentication and hardware security

Authenticate user logins using macOS TouchID, Windows Hello, or FIDO2/U2F hardware security keys.

Biometric authentication and hardware security

Flexible and secure authentication

Go passwordless or add an extra layer of security to your account.

Passwordless sign-in

Replace your password with a tap on your smartphone, your device's biometric authentication options, or a hardware security key.

Multi-factor authentication (MFA)

Require the approval of any login attempt through the Secure SignIn app, user devices' biometric authentication options, a hardware security key, or a one-time password (OTP).

Passwordless sign-in
Multi-factor authentication (MFA)

How it works

See how you can simplify your login experience without compromising the security of your Synology NAS.


Passwordless sign-in

  • Step 1Connect to your Synology DSM and key in your username
  • Step 2Tap on the push notification sent to your mobile device
  • Step 3Tap "Approve" on your device screen to sign in

Two-factor authentication (2FA) with FIDO2

  • Step 1Connect to your Synology DSM and key in your username
  • Step 2Key in your password and click on "Next"
  • Step 3Insert your FIDO2 hardware security key when prompted
  • Step 4Authenticate with your fingerprint to sign in
Download Secure SignInicon

Download Secure SignIn

Scan the QR code to download for Android or iOS.

Beyond authentication

Authentication is the first line of defense against external threats, but there is more you can do to improve the security of your Synology NAS.