NTP Server : Configure NTP Server (NTPsec)2025/04/21 |
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Install NTPsec and Configure NTP server for time adjustment. NTP uses 123/UDP. |
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| [1] | Install and Configure NTPsec. |
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root@dlp:~#
apt -y install ntpsec
root@dlp:~#
vi /etc/ntpsec/ntp.conf # line 24 : if you use your own NTP servers only and also # pool entries are a few, change number of value below or comment out the line #tos minclock 4 minsane 3 # line 34 : comment out default settings and add NTP server pool you like to use # * OK to keep default if you do not have specific requirements #pool 0.ubuntu.pool.ntp.org iburst #pool 1.ubuntu.pool.ntp.org iburst #pool 2.ubuntu.pool.ntp.org iburst #pool 3.ubuntu.pool.ntp.org iburst # Use Ubuntu's ntp server as a fallback. #server ntp.ubuntu.com pool ntp.nict.jp iburst
root@dlp:~#
systemctl restart ntpsec
# verify status root@dlp:~# ntpq -p
remote refid st t when poll reach delay offset jitter
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ntp.nict.jp .POOL. 16 p - 256 0 0.0000 0.0000 0.0001
+ntp-a2.nict.go.jp .NICT. 1 u 9 64 1 17.3937 -88.6862 3.1406
+ntp-b2.nict.go.jp .NICT. 1 u 9 64 1 20.5690 -87.4461 3.4075
*ntp-a3.nict.go.jp .NICT. 1 u 9 64 1 17.3066 -88.5597 3.2338
+ntp-k1.nict.jp .NICT. 1 u 9 64 1 12.9716 -86.5904 3.2876
+ntp-b3.nict.go.jp .NICT. 1 u 9 64 1 20.0766 -87.1291 3.4099
2001:ce8:78::2 .INIT. 16 u - 64 0 0.0000 0.0000 0.0001
ntp-a3.nict.go.jp .INIT. 16 u - 64 0 0.0000 0.0000 0.0001
ntp-a2.nict.go.jp .INIT. 16 u - 64 0 0.0000 0.0000 0.0001
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