Why I'm not able to connect to the NAS via SSH since update to QTS 5.1.8 / QuTS h5.1.8 and QTS 5.2.0 / QuTS h5.2.0?
Last modified date:
2024-10-01
Applicable Products
- QTS 5.1.8 and QTS 5.2.0
- QuTS h5.1.8 and QuTS h5.2.0
Overview
QTS 5.1.8 / QuTS h5.1.8 and QTS 5.2.0 / QuTS h5.2.0 have updated OpenSSH to version 9.8p1, making some legacy algorithms obsolete. This update affects SSH connections, Rsync encryption, and SFTP.
Below are the supported host-key algorithms:
- rsa-sha2-256
- rsa-sha2-512
Recommendation
To avoid connection issues ("no hostkey alg" or "Corrupted MAC on input" error), we recommend the following:
- Use the latest versions for third-party SSH clients such as PuTTY, MobaXterm, WinSCP, FileZilla, etc. If your client supports these algorithms but still fails to connect, adding the appropriate options with the specified algorithms, as shown above, should resolve the issue.
- For Windows PowerShell, connect with the following command:
ssh -m hmac-sha2-256 NAS_ADMIN@NAS_IP
