Hydra: Token authentication

Posted on 2024-05-31 by Christopher Causer

Hydra is the name for the central IPAM at the University of Oxford. To those of you that did not know this, I will suggest that you may stop reading further as this blog post is not for you. Right, … Continue reading →

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Hydra DHCP migration: what, when, why and how

Posted on 2023-08-17 by Christopher Causer

This post assumes you know about the University’s central DHCP provision and have some interest in its migration to a new management platform. Towards the end of 2019 the DNS management platform for University of Oxford migrated to a custom-built … Continue reading →

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eduroam 802.1X deviceauth refresh

Posted on 2022-11-10 by Christopher Causer

Do you recognize the following web form? If you don’t then you can stop reading. If you do then, even if you haven’t had occasion to fill it in often, please read on as there are changes coming. Above is … Continue reading →

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OWL Visitor refresh – Timetable

Posted on 2020-02-17 by Christopher Causer

This blog post is an expansion on the previous post about Tawny OWL to give timescales. The upgrade of the FroDos to re-route OWL traffic from the current system to the new one (called Tawny) is roughly a two stage … Continue reading →

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What happens to mail you mark as spam?

Posted on 2019-01-07 by Christopher Causer

This blog post hasn’t spun out of any particular instance, but I sometimes get the feeling that clicking the “Mark as SPAM” button in a mail client isn’t completely understood by everyone, which isn’t surprising as everything that follows is … Continue reading →

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eduroam and realmless usernames: an update

Posted on 2018-08-01 by Christopher Causer

You may be aware that the University of Oxford will shortly be mandating fully qualified usernames for eduroam, explained and for reasons discussed in a previous blog post. This post is intended as a followup, highlighting how we’re intending on … Continue reading →

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eduroam and realmless usernames

Posted on 2017-10-05 by Christopher Causer

IT Services’s user-facing instructions for connecting to eduroam have always been unequivocal about the username to use: if you want to connect to eduroam, your username is your SSO with @ox.ac.uk appended on at the end, all lower case. So, … Continue reading →

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The University’s mail relays and encryption

Posted on 2016-02-17 by Christopher Causer

By the time this post has been published, the Oxmail relays will most likely be using opportunistic encryption to encrypt outgoing emails, in response to actions by cloud mail providers. However, we would like to make it clear that we … Continue reading →

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DNS Resolvers – DNSSEC

Posted on 2015-09-22 by Christopher Causer

We are approaching deployment of a new fleet of DNS resolvers and there are a few questions that we would like feedback from the wider ITSS community. Specifically this post is broaching the subject of DNSSEC. Just to be clear, … Continue reading →

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FreeRADIUS, sql_log, PostgreSQL and upserting

Posted on 2015-07-15 by Christopher Causer

While this is superficially a post for creating an upsert PostgreSQL query for FreeRADIUS’s sql_log module, I felt the problem was general enough to warrant an explanation as to what CTEs can do. As such, the post should be of … Continue reading →

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