Solving convoluted problems, tutorials, write-ups & thoughts on security

Tutorials

Migrate old GELI pool to ZFS-encrypted datasets in TrueNAS CORE

This guide walks you through the painstaking path of migrating old GELI-encrypted pools to new ZFS-encrypted pools, assuming you have spare disks to store the entirety of your data temporarily. We also emphasize on the confidentiality of the data, something that does not necessarily come out-of-the-box in TrueNAS, at least not for all possible options.…

Write-up

Reverse proxying FTPS with OpenResty (in Nginx Proxy Manager)

When you run an FTP server in 2025, like a surviving dinosaur, and you have the presence of mind to add a TLS layer, you may find yourself puzzled by the lack of support for certificate renewal in commercial FTP server software. The idea of reverse proxying the FTP server makes sense, but FTP likes…

Write-up

Comodo Report Tool: How Not to Upload System Reports

When troubleshooting a problem with Comodo Firewall with the help of a staff member from the Comodo forum, I found that the tool they asked me to run to gather (extensive) information about my system sends the report to a server via SSH, with hardcoded credentials, next to many other user reports, which are readable…

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