ssh(d) "Failed keyboard-interactive/pam for invalid user"

[Robert Huff]

	One of my machines running:

FreeBSD 7.0-CURRENT FreeBSD 7.0-CURRENT #0: Thu Aug  3 15:33:32 EDT 2006

	has suddenly decided to deny all ssh connections, whether by
key-exchange or password.
	When attempting the latter, this appears in auth.log:

Oct  3 22:47:44 jerusalem sshd[46280]: error: PAM: authentication error for illegal user <deleted> from bronze.lcs.mit.edu
Oct  3 22:47:44 jerusalem sshd[46280]: Failed keyboard-interactive/pam for invalid user <deleted> from 128.31.0.11 port 63059 ssh2

	Thre's nothing relevant in /usr/src/UPDATING, and searching on
Google points to Samba-related stuff.  I am running Samba, but fail
to understand how this can affect a non-Samba-related login.
	Anyone willing to whap me with the clue-iron?


				Robert Huff