Note: If the unit is rebooted with host key creation in progress, or
the unit is booted and no host keys exist, the key generation process
is restarted. The key generation process uses the previously spe-
cified key sizes.
Note: If a key size is undefined, the default key bit length size used is
2048. A key with a zero length or blank key size field will not be cre-
ated.
When you delete a host key and recreate a new one, SSH client sessions will warn you that
the host key has changed for this particular IP address. You must then take one of the fol-
lowing actions:
1.
Override the warning and accept the new Public Host Key and start a new con-
nection. This is the default. This option allows users to login using either method.
Whichever mode works is allowed for logging in. If the Public Key is not correct or
the Passphrase is not valid the user is then prompted for the login account password.
2.
Remove the old Host Public Key from their client system and accept the new Host
Public Key. This option simply skips public/private key authentication and imme-
diately prompts the user for password over a secure encrypted session avoiding
sending passwords in the clear.
3.
Load a public key into SecureSync. This public key must match the private key
found in the users account and be accessible to the SSH, SCP, or SFTP client pro-
gram. The user must then enter the Passphrase after authentication of the keys to
provide the second factor for 2-factor authentication.
Please consult your specific SSH client’s software’s documentation.
Public Keys: Viewing, Editing, Loading
The authorized_keys file can be viewed and edited, so as to enable adding and deleting
Public Keys. The user may also retrieve the authorized_keys file from the .ssh directory
Using FTP, SCP, or SFTP.
If you want to completely control the public keys used for authentication, a correctly
formatted authorized_keys file formatted as indicated in the OpenSSH web site can be
loaded onto SecureSync. You can transfer a new public key file using the Web UI.
To view and edit the authorized_keys file:
1.
Navigate to MANAGEMENT > NETWORK: SSH Setup. The SSH Setup window
will open to the Host Keys tab by default.
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CHAPTER 2 • SecureSync 2400 User Manual Rev. 2
2.14 Configure Network Settings
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