Five-minute facts about packet timing If you’ve been paying attention, and I know you have, there has been a lot of discussion lately about the fact that the critical infrastructure of the world is dependent on GNSS for position, navigation, and timing (PNT). I’m talking about everything that differentiates us from wild animals: power, communications, […]
Network Time Security (NTS): Updated security for NTP
Five-minute facts about packet timingNetwork Time Protocol version 4 (RFC 5905) is a spectacularly successful network time transfer protocol. It can be found in almost every IP network. Often NTP messages will traverse leased lines or the “public internet”. Therefore, it is especially important that an NTP client can determine that the NTP server is […]
PTP Auto Mode
Five Minute Facts About Packet Timing By Andreja Jarc. In this post I would like to introduce a method which can be deployed in versatile PTP networks, professional media, power or any other timing network. Basically, it is a method which uses a combination of PTP and the Meinberg MRS (Multi-Reference-Source) feature which build together […]
GNSS Spoofing and how to mitigate it
Five Minute Facts About Packet Timing In a previous post I talked about GNSS jamming and how to mitigate it. Today I will discuss GNSS spoofing. Once again GNSS means Global Navisgation Satellite System, which includes not only GPS, but similar systems like the European Galileo. GNSS jamming is bad, but at least you always […]
GNSS jamming and how to mitigate it
Five Minute Facts About Packet Timing This post discusses GNSS jamming, for a discusstion of GNSS Spoofing see the follow up post. Before a timeserver transmits messages with timing information it usually gets that information from a GNSS receiver. That is a Global Navigation Satellite System. Such systems include the Global Positioning System (GPS), Galileo, […]
Trusted Source Mode
By Andreja Jarc. In the latest release of our LANTIME firmware 6.24 you can find a new feature called Trusted Source. This additional functionality is much awaited by everyone who is looking for a method that will help to mitigate vulnerabilities of the GPS signal. Anomalies in the GPS timing caused by unfriendly signal spoofing […]
Messing with your Radio Time Signal
Last month two Chinese researchers gave a presentation titled “Time is on my Side” during the “Hack in The Box” 2016 SecConf event in Amsterdam, NL (https://conference.hitb.org/hitbsecconf2016ams/) . In this presentation, the researchers outlined a way to attack NTP servers by spoofing AM and GPS radio signals which are used as the time reference by most […]
NTP Security and Protection
By Andreja Jarc. Synchronized timing is vitally important when many systems work together in a network. Services such as Logfiles, Correlation of Events, User Authentication Mechanisms, Job Scheduling e.g. for backups or Active Directories running on distributed platforms use accurate timestamps to record events in chronological order and to avoid conflicts with data replication. Without […]