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Adding External NTP Server Reference Clocks

SR and SC Series NTP Servers Help and Support: Adding External NTP Server Reference Clocks Models that this article applies to: SR Series: SR9210, SR9750, SR9850, SR9860D SC Series: SC9205, SC9705 The SR and SC series of GPS-referenced NTP servers can utilise external NTP servers as additional reference clocks. External NTP servers can be added as either […]

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NTP Reflection Distributed Denial of Service (DDoS) Attacks

Symantec, the computer security solutions company, has reported a large number of NTP reflection distributed denial of service (DDoS) attacks over the December 2013 Christmas period. What is a NTP Reflection Attack? A reflection attack is conducted by an attacker sending a small forged packet of information to a server that requests a much larger […]

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SR and SC Series NTP Time Servers Firmware Updates

The latest firmware updates for the SR and SC Series NTP Time Servers can be downloaded using the links below: SR7110 \ SC7105 v1.0.006c (ZIP, 1.8MB) SR9210 \ SC9205 v1.0.006c (ZIP, 1.8MB) SR9750 \ SR9850 \ SC9705  v1.0.006c (ZIP, 1.8MB) SR9860D v1.0.006c (ZIP, 1.8MB)   Guide to Updating SR and SC Series NTP Servers Firmware (PDF, 130K) SR Series Firmware Version […]

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Stratum 1 NTP Network Time Servers Available In The UK, Europe

TimeTools is a UK-based manufacturer of NTP servers and precision timing equipment. Based on GPS and LF radio technology, our products provide a reliable, accurate and traceable source of time for your network. If synchronised time is important to your organisation, please consider one of our hardware network time server appliances. Related Information Stratum 1 Internet […]

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Generating Your Own SSL Certificates

SR and SC Series NTP Servers Help and Support: Generating Your Own SSL Certificates Models that this article applies to: SR Series: SR9210, SR9750, SR9850, SR9860D SC Series: SC9205, SC9705 Summary How to generate and create a self-signed Secure Sockets Layer (SSL) certificate for the SR and SC series NTP servers. Tips There are a […]

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LF Radio Troubleshooting Tips

SR and SC Series NTP Servers Help and Support: LF Radio Troubleshooting Tips Models that this article applies to: SR Series: SR7110, SR9210, SR9750, SR9850, SR9860D with MSF or DCF-77 LF radio antenna. SC Series: SC7105, SC9205, SC9705 with MSF or DCF-77 LF radio antenna. Summary Struggling to get a good LF radio signal ? […]

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GPS Installation and Troubleshooting Tips

SR and SC Series NTP Servers Help and Support: GPS Troubleshooting Tips Models that this article applies to: SR Series: SR7110, SR9210, SR9750, SR9850, SR9860D with GPS antenna. SC Series: SC7105, SC9205, SC9705 with GPS antenna. Summary Struggling to get a GPS lock ? Here’s a few tips and pointers to getting a good consistent […]

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Local Time Is Not Displayed

SR and SC Series NTP Servers Help and Support: Local Time Is Not Displayed Models that this article applies to: SR Series: SR7110, SR9210, SR9750, SR9850, SR9860D SC Series: SC7105, SC9205, SC9705 Summary The SR and SC series NTP servers operate using UTC time rather than local time – here’s why. Tips NTP always operates […]

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Lost or Forgotten Password

SR and SC Series NTP Servers Help and Support: Lost or Forgotten Password Models that this article applies to: SR Series: SR7110, SR9210, SR9750, SR9850, SR9860D SC Series: SC7105, SC9205, SC9705 Summary Lost or forgotten the administrative password ? It can be easily recovered with physical access to the device using the serial console lead. […]

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Network Time Clients Will Not Sync To The NTP Server

SR and SC Series NTP Servers Help and Support: Network Time Clients Will Not Sync To The NTP Server Models that this article applies to: SR Series: SR7110, SR9210, SR9750, SR9850, SR9860D SC Series: SC7105, SC9205, SC9705 Summary There are a number of reasons why a network time client may not synchronise to a NTP […]

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