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Fixing Mattermost mobile client reconnection issues over HAProxy

As I already have a reverse proxy, when the Mattermost installation documentation told me to set up a separate Nginx instance as a proxy in front of the server I simply skipped the chapter. I know how to proxy a TLS connection from an inbound port to a backend service. Unfortunately it had the strange […]

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Simple DNS over HTTPS setup

I read that Mozilla had been named an Internet villain by a number of British ISPs, for supporting encrypted DNS queries using DNS over HTTPS. I guess the problem is that an ISP by default knows which sites you browse even though the traffic itself is usually encrypted nowadays, since the traditional way of looking […]

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Restoring a really old domain controller from backups

I had an interesting experience this week, where I was faced with the need to restore an entire Active Directory environment from backups that were more than a year old. The company whose servers I was restoring had been using an older version of Veeam Backup and Recovery, which always simplifies matters a lot: The […]