Password authentication is the most commonly used form of user authentication. There are two cases where it cannot be used in SSH Tectia Server for IBM z/OS: when running client programs from JCL or the TSO OMVS shell.
When running SSH Tectia client programs from JCL there is no facility for getting the password from the user. Use a plaintext private key and public-key authentication. See Section User Authentication with Public Keys.
Password authentication is not available when running SSH Tectia client programs from the TSO OMVS shell because the shell cannot guarantee that the password will be hidden on the screen. Use a Telnet shell or Secure Shell, or set up public-key authentication with a plaintext private key.