Why is a Stratum-1 NTP Server Important

A Time Server is not just an optional service in a network system. Accurate time is critically important for the sequence of events occurring within systems and serves as a fundamental basis for verifying log files and audit logs used in troubleshooting and root cause analysis. In addition, precise timing is essential for database systems and other distributed systems. Therefore, servers and PCs within a network must be synchronized. The standard protocol commonly used for this purpose is Network Time Protocol (NTP).

NTP is designed as a hierarchical protocol. At the top level (Stratum-0) are highly accurate time sources such as GPS satellites, CDMA, or WWV. Time servers in subsequent layers are classified based on their distance from Stratum-0. For example:

Stratum-1 Time Server: Directly connected to a GPS receiver and provides the highest level of accuracy

Stratum-2 Time Server: Synchronizes time from a Stratum-1 server

Stratum-3 Time Server: Synchronizes time from a Stratum-2 server

The higher the Stratum level, the lower the accuracy due to increased network latency from switches, hubs, routers, and traffic volume. Typically, time deviation is around 2 ms for LAN and 10–100 ms for WAN, but synchronization over the internet can be unpredictable.

In general, there are several approaches to implementing an NTP server:

Using an NTP appliance that directly receives time signals from Stratum-0 sources such as GPS satellites. This makes it a Stratum-1 time server with the highest accuracy and security

Deploying a central NTP server within the organization that synchronizes with public NTP servers over the internet. This results in a Stratum-2 or Stratum-3 server with lower accuracy. While commonly used, it depends on the reliability of external NTP providers and may not be suitable for organizations requiring high precision and security

Allowing each client device to synchronize directly with public NTP servers. This approach has lower security because NTP uses UDP, which is vulnerable to IP spoofing. Additionally, NTP port 123 is often blocked by firewalls, preventing synchronization

Wavify TimeNX

Wavify TimeNX is a Stratum-1 NTP server appliance that delivers highly accurate time synchronization by referencing GPS satellite signals. It is specifically designed to provide NTP and DNS caching services for organizations ranging from general enterprises to research institutions requiring high precision timing.

Built on the concept of "Everything is included," Wavify TimeNX is a ready-to-use solution with optimized hardware and operating systems focused on security, performance, and accuracy for NTP workloads. It also features a web-based management interface for ease of use and reporting tools that allow administrators to monitor system performance efficiently.

Key Features

Supports 4,000–8,000 NTP requests per second (depending on model)

Supports NTP authentication to prevent man-in-the-middle attacks

Includes a stateful firewall for traffic logging and protection against DoS attacks

Provides nanosecond-level accuracy

Easy management via web-based interface

Supports IPv6

For more information about Time Server or Time Synchronization Appliance solutions, please contact Throughwave at 02-210-0969.