QNAP Security VioStor NVR (Version: 4.1.2) - Manual (Page 220)

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6.7.9 Key Management
Import SSL Secure Certificate
The Secure Socket Layer (SSL) is a protocol for encrypted communication between the web
servers and the web browsers for secure data transfer. You can upload a secure certificate
issued by a trusted provider. After uploading a secure certificate, users can connect to the
administration interface of the NVR by SSL connection and there will not be any alert or
error message. The NVR supports X.509 certificate and private key only.
•Download Certificate: To download the secure certificate which is currently in use.
•Download Private Key: To download the private key which is currently in use.
•Restore Default Certificate & Private Key: To restore the secure certificate and private
key to system default. The secure certificate and private key in use will be overwritten.