这些都改过了PasswordAuthenticationyes、PermitRootLoginyes、ssh-keygen-tdsa-f/etc/ssh/ssh_host... 这些都改过了 PasswordAuthentication yes、 PermitRootLogin yes、ssh-keygen -t dsa -f /etc/ssh/ssh_host_dsa_key、ssh-keygen -t dsa -f /etc/ssh/ssh_host_rsa_key