On Wed, Jun 20, 2018 at 04:50:34PM +0300, David Baron wrote: > Attached ntp.conf > Attached service.text > OK, so your NTP servers are: pool 0.debian.pool.ntp.org iburst pool 1.debian.pool.ntp.org iburst pool 2.debian.pool.ntp.org iburst pool 3.debian.pool.ntp.org iburst What happens if you do: ping 0.debian.pool.ntp.org ? Most likely you are blocking UDP/123. However, if you fail to resolve the IP when you ping it, you have a DNS issue. Mike.
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