How to use restrict in ntp.conf

Solution Verified - Updated -

Issue

  • When we configure ntp.conf as following, how ntp allow connections to the host?

    restrict default ignore
restrict 192.168.0.1 noquery nomodify

  • Does ntp behavior depend on the order of restrict statements in ntp.conf? For example, the following 2 cases is different?

    Case1:
restrict default ignore
restrict 192.168.0.0 mask 255.255.255.0
restrict 192.168.0.1 noquery nomodify

Case2:
restrict default ignore
restrict 192.168.0.1 noquery nomodify
restrict 192.168.0.0 mask 255.255.255.0

Environment

  • Red Hat Enterprise Linux 5

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