Posts

The problem statement Let’s say you have a (Windows or Linux) EC2 instance in a private subnet and want to access it interactively. There are several ways to do this: You could use a bastion host in your public subnet, harden it and limit access to a certain IP range, and then tunnel your SSH or RDP (or any other TCP) traffic through this host using SSH. Alternatively, you could set up a VPN server through which to connect to your instance. ...

I’m currently in the process of building a computer based on the 6502 microprocesser, following Ben Eater’s instructions. It’s a nice way of learning the lower level parts of a computer by wiring up and eventually coding everything yourself. In this post I want to share my (more or less structured) notes of the steps taken and lessons learned so far (covering part 1 to part 7). While my notes were mainly created to explain things to myself, I hope you can get some value out of it as well. ...

Since the launch of allgood.systems you were able to monitor if your background jobs, scheduled tasks, cron jobs, etc. were running whenever you expected them to be running. This was accomplished by defining an interval on allgood and then sending a request to a check-in URL at the end of your script. If the request didn’t arrive at the end of the specified interval, you would get a notification that your job is down. ...

A description of how FileMaker Server stores secrets and how to approach deciphering an unknown keystore.

Back in the dark ages the FileMaker Server admin console (then Java Web Start) allowed you to remotely upload new fmp12 files to the server. For some reason this feature did not survive the admin console rewrite a decade (?) ago. Rather, the upload feature was integrated into the Pro client. Later, as the Admin REST API was released, the upload feature was still missing. The only two options to upload fmp12 files to the server are thus: ...