NTP Server : Configure NTP Server (Chrony)

	Install Chrony and Configure NTP server for time adjustment. NTP uses 123/UDP.
[1]	Install and Configure Chrony.

root@dlp:~#  apt -y install chrony root@dlp:~#  vi /etc/chrony/chrony.conf # line 5 : comment out default settings and add NTP Servers for your timezone #pool 2.debian.pool.ntp.org iburst pool ntp.nict.jp iburst # add to last line : network range you allow to receive time syncing requests from clients allow 10.0.0.0/24 root@dlp:~#  systemctl restart chrony # verify status root@dlp:~#  chronyc sources MS Name/IP address Stratum Poll Reach LastRx Last sample =============================================================================== ^- ntp-a3.nict.go.jp 1 6 17 10 -92us[ -92us] +/- 10ms ^- ntp-k1.nict.jp 1 6 17 10 -637us[ -637us] +/- 9855us ^* ntp-b2.nict.go.jp 1 6 17 10 +786us[ +349us] +/- 12ms ^- ntp-a2.nict.go.jp 1 6 17 10 +1655us[+1655us] +/- 9278us