New Zealand (South Island)
Seth Kenlon is a UNIX geek, free culture advocate, independent multimedia artist, and D&D nerd. He has worked in the film and computing industry, often at the same time. He is one of the maintainers of the Slackware-based multimedia production project Slackermedia.
Authored Comments
I see your line of thinking, but were someone to compromise your home router, it probably won't make a difference what physical device your shared drive is attached to. A shared drive is on your network, so anything with access to your network has access to the drive.
The good thing is that OpenWRT and Turris OS both provide easy VPN setups, so you can severely limit access to your device. That plus a good firewall is a pretty good place to be.
That said, you should configure your network in whatever way makes you most comfortable. It's never fun to lose sleep over the security of your setup.
It's open source. Here are the OS and firmware components, under a GPLv2 license:
https://github.com/CZ-NIC/turris-os
You don't have to run their firmware or Linux distribution if you're not comfortable with it. You can run OpenWRT or even Debian: https://wiki.debian.org/InstallingDebianOn/Turris/Omnia