diff --git a/vtysh/vtysh_user.h b/vtysh/vtysh_user.h
new file mode 100644
index 0000000..8d0a4cf
--- /dev/null
+++ b/vtysh/vtysh_user.h
@@ -0,0 +1,27 @@
+/* User authentication for vtysh.
+ * Copyright (C) 2000 Kunihiro Ishiguro
+ *
+ * This file is part of GNU Zebra.
+ *
+ * GNU Zebra is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2, or (at your option) any
+ * later version.
+ *
+ * GNU Zebra is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with GNU Zebra; see the file COPYING.  If not, write to the Free
+ * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+ * 02111-1307, USA.  
+ */
+
+#ifndef _VTYSH_USER_H
+#define _VTYSH_USER_H
+
+int vtysh_auth ();
+
+#endif /* _VTYSH_USER_H */