RFC 9432: DNS Catalog zones

A DNS zone is usually served by multiple authoritative servers, which is actually recommended for the sake of redundancy. Large authoritative DNS operators even combine different name server implementations to avoid complete infrastructure outage in case of any software error. For synchronizing zone contents between authoritative servers, a DNS-specific mechanism is available, called zone transfer. It is well established and supported by all common DNS implementations. It enables both full zone transfer (AXFR) and incremental update (IXFR).

 

25.7.2023 at 11:30 Počet komentářů 0
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Sentinel View report – May 2023

The overall count for total incidents dropped by 100 million. Sounds like a lot, but given the number of attacks we recorded (1.6 billion), it is just less than 10% decrease. Still significant, but not as shocking as hundred millions sounds. The results for minipot traps have not changed significantly from previous month, it seems the attackers are pretty consistent in regards to what services interest them the most.

27.6.2023 at 11:26 Počet komentářů 0
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Sentinel View report – March 2023

Looking at Greylist and Incidents Statistics, March data seem to be quite stable in comparison with the previous month. The total count of incidents did not drop significantly from February as the difference is about 100k incidents. The total number of incidents in February, divided by the number of days in the month and then multiplied by 30.36 (average number of days in a month) is 20,543,356.40. For March, using the same rules, we get 20,461,799.03.

19.4.2023 at 11:04 Počet komentářů 0
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New Netmetr is called LibreSpeed and it is global

A long time ago, CZ.NIC started a project called Netmetr, which was performed in cooperation with the Czech Telecommunication Office (CTU). The goal was to provide a reliable Internet connectivity benchmark  that ordinary people can use to verify the parameters of their Internet connection. The cooperation went well and CTU was getting more and more interesting data about the quality of Internet connectivity in the Czech
Republic. Moreover, CTU decided to integrate the service into their systems and maintain it by themselves. They used the open-source software Netmetr and created Nettest – their own instance integrated into their  environment. That unfortunately meant that the Netmetr itself lost its main purpose and it no longer made sense to keep it running.

29.3.2023 at 14:27 Počet komentářů 0
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