NIS

add to rc.conf

nisdomainname="csna"
nis_server_enable="YES"         
nis_yppasswdd_enable="YES"
nis_client_enable="YES"
nis_client_flags="-S NIS domain,server"

domainname csna start service

service ypserv start
service yppasswdd start

make config

cp /etc/master.passwd /var/yp/master.passwd
cd /var/yp
vi master.passwd
vi Makefile
# comment out this line: NOPUSH = "True"
make

init master

Server Type: MASTER Domain: csna

Creating an YP server will require that you answer a few questions.
Questions will all be asked at the beginning of the procedure.

Do you want this procedure to quit on non-fatal errors? [y/n: n]  n

Ok, please remember to go back and redo manually whatever fails.
If you don't, something might not work. 

Can we destroy the existing /var/yp/csna and its contents? [y/n: n]  y

At this point, we have to construct a list of this domains YP servers.
csna is already known as master server.
Please continue to add any slave servers, one per line. When you are
done with the list, type a <control D>.
	master server   :  csna
	next host to add:  ^D
The current list of NIS servers looks like this:

csna

Is this correct?  [y/n: y]  y

service ypbind start

rpcinfo -p serverhost
ypwhich
ypcat -x
ypcat passwd