sftp - you don't exist, go away

[Marc-Oliver Veltwisch]

I set up a test environment with a nis+ root master, a nis+ replica and a client. On all of them i disable ftp, telnet and r-services.

Now i try to connect via sftp and i get the message: "you don't exist, go away". If i try this with root the machine don't accept my password.

If i try to create a rsa Key, i get the message: "permission denied, ssh-rand-helper child profuced insufficient data."

Please help