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Security Update: NTP Vulnerabilities – 5 January 2015

The NTP project (ntp.org) recently reported that current versions of the NTP distribution contain a number of security related issues. It reports that all NTP 4.x.x versions are affected. The vulnerabilities are specified by the following CVE-IDs: CVE-2014-9293 CVE-2014-9294 CVE-2014-9295 CVE-2014-9296. The specified vulnerabilities relate to the use of mode 6 and mode 7 packets […]

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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. The zipped files contains a tar archive for uploading to the SR/SC series device along with installation instructions. SR71-1.0.007a.zip (Models: SR7110, SC7105,  ZIP archive file, 3.5MB) SR92-1.0.007a.zip (Models: SR9210, SC9205, ZIP archive file, 3.5MB) SR97-1.0.007a.zip (Models: SR9750, SR9850, […]

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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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