Debian NTP Server

Let start by installing few packages:

apt-get -y install ntp ntpdate

The options passed to ntp daemon are set in /etc/default/ntp file. We are interested to turn off ipv6 for now:

NTPD_OPTS='-4 -g'

As well we are going restrict ntp daemon for use ipv4 only (file /etc/ntp.conf):

# By default, exchange time with everybody, but don't 
# allow configuration.
restrict -4 default kod notrap nomodify nopeer noquery
#restrict -6 default kod notrap nomodify nopeer noquery

# Local users may interrogate the ntp server more 
# closely.
restrict 127.0.0.1
#restrict ::1

Restart ntp daemon so the changes take place:

/etc/init.d/ntp restart

Look which servers it uses for synchronization:

ntpq -4p

Client

Install ntpdate package:

apt-get -y install ntpdate

You can sync the client with you ntp server by issuing the following command (I assume your local htp server resolves to ntp.dev.local):

ntpdate -p 2 ntp.dev.local

Consider have a look at the following post (you just need to substitute the ntp server name with yours).