Ubuntu Adopts Chrony + NTS for Secure Network Time

Ubuntu is changing the way time management is handled in its next release, to bolster the distro’s out-of-the-box security. Chrony replaces systemd-timesync in Ubuntu 25.10 Questing Quokka, and has Network Time Security (NTS) support enabled. NTS is considered more secure than relying solely on Network Time Protocol (NTP), as systemd-timesync does. Why? Well, NTP doesn’t authenticate its time source, which can lead to a system being given the wrong time by a malicious server — accurate time is a critical part in cryptography related tasks, like web site certificates. NTS uses the port 4460/TCP for its NTS KeyExchange, in addition […]

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