Restrict default kod nomodify notrap nopeer limited mssntp # Default restriction: Allow clients only to query the time Ntpsigndsocket /usr/local/samba/var/lib/ntp_signd/ Note that is not the "localhost" address! The following is a minimum nf file that synchronises the time with three external NTP server and enables clients to query the time using signed NTP requests: Typically, the ntpd daemon read its configuration from the /etc/nf file. # chmod 750 /usr/local/samba/var/lib/ntp_signd/ To set the permissions, run: # chown root:ntp /usr/local/samba/var/lib/ntp_signd/ The path of course then needs to be changed in the nf below as well. Note: Depending on your linux distribution, the path might be different, e.g /var/lib/samba/ntp_signd/. May 09:30 /usr/local/samba/var/lib/ntp_signd/ # ls -ld /usr/local/samba/var/lib/ntp_signd/ĭrwxr-x- 2 root ntp 4096 1.
The time daemon must have read permissions in the ntp_signed directory.
Samba supports the ntpd from and chrony from. As a result, a user cannot access shares or query the directory. If a domain member or domain controller (DC) has a higher or lower time difference, the access is denied. The default maximum allowed time deviation in an AD is 5 minutes. For example, Kerberos requires correct time stamps to prevent replay attacks and the AD uses the time to resolve replication conflicts. In an Active Directory (AD) you must have an accurate time synchronisation.
2 Configuring Time Synchronisation on a DC.
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