2/18/2023 0 Comments Filezilla server refused our keyThe procedure for configuring a user for SSH Public Key Authentication in Cerberus FTP Server is: The SSH Authentication Method dialog in the User Manager The final step in configuring a user for public-key authentication is assigning the client’s public key to the user account in Cerberus FTP Server. Adding the SSH public key to the user’s account in Cerberus FTP Server The private key must be kept a secret, and only the client should ever have access to the private key file. However, with this approach, the administrator now has the task of securely sending the private key to the client. You can also have the server administrator create and deliver the key pair for the client. Method 2: Server Administrator creates the SSH public and private key Many SFTP clients already have utilities build in to create an SSH2 key pair but if your client does not have one they can download a free utility like PuttyGen to create one on their machine. The file can be sent unencrypted from the client to the administrator. The public key is the only file the Cerberus administrator needs, and the public key file’s contents do not need to be kept secret. This approach ensures that the client is the only entity to ever possess the private key, and removes the need to securely deliver the private key to the client. The server administrator can then assign the public key to the user’s account. The client will give the SSH public key to the Cerberus FTP Server administrator while keeping the secret private key for their SFTP client. The recommended method of key creation and distribution is for the client to create the SSH key pair. Method 1: The client creates the SSH public and private key The key strength should be at least 2048 bits for RSA or DSA keys. The next few sections describe two approaches to SSH key creation, and how to assign the created public key to an account in Cerberus FTP Server. We recommend the client create their own SSH2 key pair and then send the public key to the server administrator. Configuring an SSH user for public-key authentication requires both a public SSH key and a private SSH key (also known as an SSH key pair).
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