# Permit time synchronization with our time source, but do not
# permit the source to query or modify the service on this system.
restrict default nomodify notrap noquery

# Permit all access over the loopback interface.  This could
# be tightened as well, but to do so would effect some of
# the administrative functions.
restrict 127.0.0.1 


# -- CLIENT NETWORK -------
# Permit systems on this network to synchronize with this
# time service.  Do not permit those systems to modify the
# configuration of this service.  Also, do not use those
# systems as peers for synchronization.
# restrict 192.168.1.0 mask 255.255.255.0 nomodify notrap
restrict 10.10.1.0 mask 255.255.255.0 nomodify notrap
restrict 10.1.0.0 mask 255.255.0.0 nomodify notrap


# --- OUR TIMESERVERS ----- 
#
# From: http://pcdsh01.on.br/
# pcdsh05.on.br 200.20.186.75
# Location: Observatorio Nacional
# Synchronization: 
# Service Area: 
# Access Policy: Open access
server pcdsh05.on.br
#
# From http://www.rnp.br/ntp/ntp-stratum2.html
#
# ntp.cais.rnp.br (200.144.121.33)
# Location: Brazilian Research Network/Rede Nacional de Pesquisa (RNP)
# Synchronization: NTP V4 Secondary (stratum 2), SunSparc10/Solaris
# Service Area: Brazil
# Access Policy: Open access to stratum 2 and stratum 3 NTP servers. Please, send an e-mail to notify.
# Contact: ntp-admin@cais.rnp.br
#
server ntp.cais.rnp.br
#
# ntp.puc-rio.br (139.82.34.11)
# Location: Pontifía Universidade Catóa do Rio de Janeiro
# Synchronization: NTP V3 Secondary (stratum 2), Linux
# Service Area: Brazil
# Access Policy: Open access to stratum 2 NTP servers. Please, send an e-mail to notify.
# Contact: ntp-admin@puc-rio.br
#
server ntp.puc-rio.br
#
# ntp1.pucpr.br (200.192.112.8)
# Location: Pontificia Universidade Catolica do Paranáynchronization: NTP V4 Secondary (stratum 2), SunSparc4/Solaris7
# Service Area: Brazil
# Access Policy:open access to stratum 2 servers. Please, send an e-mail to notify.
# Contact: ntp1@pucpr.br
#
server ntp1.pucpr.br
#
# ntp.pop-rs.rnp.br (200.132.0.132)
# Location: PoP-RS/Brazilian Research Network (RNP)
# Synchronization: NTP V4 Secondary (stratum 2), SunSparc10/Solaris
# Service Area: Brazil
# Access Policy: Open access to stratum 2 and stratum 3 NTP servers. Please, send an e-mail to notify.
# Contact: ntp-admin@pop-rs.rnp.br
#
server ntp.pop-rs.rnp.br
#
#server 0.pool.ntp.org
#server 1.pool.ntp.org
#server 2.pool.ntp.org


# --- NTP MULTICASTCLIENT ---
#multicastclient			# listen on default 224.0.1.1
# restrict 224.0.1.1 mask 255.255.255.255 nomodify notrap
# restrict 192.168.1.0 mask 255.255.255.0 nomodify notrap



# --- GENERAL CONFIGURATION ---
#
# Undisciplined Local Clock. This is a fake driver intended for backup
# and when no outside source of synchronized time is available. The
# default stratum is usually 3, but in this case we elect to use stratum
# 0. Since the server line does not have the prefer keyword, this driver
# is never used for synchronization, unless no other other
# synchronization source is available. In case the local host is
# controlled by some external source, such as an external oscillator or
# another protocol, the prefer keyword would cause the local host to
# disregard all other synchronization sources, unless the kernel
# modifications are in use and declare an unsynchronized condition.
#
server	127.127.1.0	# local clock
fudge	127.127.1.0 stratum 10	

#
# Drift file.  Put this in a directory which the daemon can write to.
# No symbolic links allowed, either, since the daemon updates the file
# by creating a temporary in the same directory and then rename()'ing
# it to the file.
#
driftfile /var/lib/ntp/drift
broadcastdelay	0.008

#
# Keys file.  If you want to diddle your server at run time, make a
# keys file (mode 600 for sure) and define the key number to be
# used for making requests.
#
# PLEASE DO NOT USE THE DEFAULT VALUES HERE. Pick your own, or remote
# systems might be able to reset your clock at will. Note also that
# ntpd is started with a -A flag, disabling authentication, that
# will have to be removed as well.
#
keys		/etc/ntp/keys