Categories
DNS

A brief blip in the DNS

At around 5pm on Wednesday 25th March we received a few reports that some sites on Janet were having issues with DNS resolution. This was caused by the site’s own resolver still performing DNSSEC Lookaside Validation (DLV), and a failure by the operators of the DLV zone that broke the DNSSEC signing of that zone. […]

Categories
TrafficManagement

How working from home has changed the traffic on the Janet Network (and what happened on Thursday)

As many of us are moving from working at a college or University to working at home, so the ways that data is flowing across the Janet network are changing. Up until this week, the largest traffic flows across Janet were inbound from GÉANT and the major content providers towards our members and customers.  The […]

Categories
#Technology & Innovation

Hic sunt dracones

One of the questions that we get asked in the Network Development and Architecture team is “when are you going to deploy ‘thing they read about in the tech news’?” and the answer usually falls squarely into one of three distinct categories:

Categories
#Technology & Innovation

IPv4 Address Brokers and Legacy Address Space

If you are the contact listed in one of the global registries for the IPv4 addresses held by your University or College, I’m sure you will have received numerous emails from address brokers offering to buy some or all of your IPv4 addresses. This post is intended to provide some advice. Many of Jisc’s members […]