Server 10.10.10.1
client 20.20.20.1
---Server 설정
# cat /etc/chrony.conf
server time.bora.net
server ntp2.kornet.net
server 1.kr.pool.ntp.org iburst
allow 0/0 // client 접속대역
----Client 테스트
# ntpdate -q 20.20.20.1
server 10.10.11.1, stratum 3, offset -28686.401866, delay 0.02628
6 Dec 21:28:38 ntpdate[15703]: step time server 10.10.10.1 offset -28686.401866 sec
