Docu-NTP-Client-Server-Setup

Docuemtation of the NTP Client Server setup for Debian 11 "bullseye"

(https://wiki.debian.org/NTP)

Server

Preperation

sudo apt update && apt upgrade --show-upgraded

Installation

sudo apt install ntp

Configuration with ufw

sudo ufw allow from any proto udp to any port 123

Verify NTP service is up and running

sudo systemctl status ntp

Client

Installation

sudo apt install ntpdate ntp

Configuration

Add server your.ip.addr.ess prefer iburst

sudo vi /etc/ntpsec/ntp.conf

sudo systemctl restart ntp && systemctl status ntp && ntpq -p