ftpd-shadow-nis.tgz means that it is a ftpd server patched to work with 
SHADOW suite and NIS.

Remark:   
	if you have users with CSH default shell, don't forget to add:
 		1) a link  /bin/csh  to /bin/tcsh (if /bin/csh not included) 
		2) a line  /bin/csh   in /etc/shells.