Tony Mattke wrote a series of blog posts with detailed recommendations on how network engineers can leverage git.

In July 2026, a failure of the NTP service in Telstra caused a major outage. Telstra has published the report describing this outage in detail.

A report describing the first decade of ARPANet history, published in April 1981.

pqspy is a firefox add-on that allows to check whether the visited website is protected using Post Quantum cryptography.

Svante Jurnell explains on linkedin the different types of redundancy that you need to consider when building a fully redundant network.

Every year, IETF participants publish Requests for Comments (RFC) on April 1st. The RFC Editor website now tags these RFCs with a special emoji, see e.g. RFC3514.

A single football match retransmitted on a streaming platform has caused a sevenfold increase of the traffic at the Piacenza Internet exchange in Italy.

The NATJack attack is a new type of attack against Network Address Translation.

A new look at TCP and DNS attacks. A recent paper looks at what can happen when a malicious application running on a host can help to hijack TCP connections or DNS requests from this host. Interesting discussion on the behaviour of modern OSes.

bgpmap.net is a new web site that allows to visualise BGP data from RIPE.

Stephen Weis announced that he broke the 896 bits RSA key challenge using 2048 GPUs for a period of about ten days. Breaking this key required about 30 years of GPU time.

In an email posted on the NANOG mailing list, Vint Cerf explains why he chose between 128 bits and 32 bits for the IPv4 addresses.

Peter Lowe has collected a lot of strange usages of the DNS in his DNS Museum. If you think that you know all usages of the DNS, check this virtual museum.

This blog aims at encouraging students who read the open Computer Networking: Principles, Protocols and Practice ebook to explore new networking topics. You can follow this blog by subscribing to its RSS feed or by following @cnp3_ebook on mastodon. Feel free to share the posts that you find interesting on your preferred social network.