Attempt to support TIS auth by default in the SSHD by providing a

"csshd" requirement of the S/KEY PAM module.

etc/pam.conf

@@ -82,6 +82,7 @@ sshd	account	required	pam_unix.so
 sshd	password required	pam_permit.so
 #sshd	session	required	pam_krb5.so
 sshd	session	required	pam_permit.so
+csshd	auth	required	pam_skey.so
 
 # Don't break startx
 xserver	auth	required	pam_permit.so