• 5 Posts
  • 33 Comments
Joined 1 year ago
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Cake day: June 9th, 2023

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  • How long before power is available on the job site? I have been involved in building houses and the power panel is the first wall to be built so that power is available to the crew. Could you strap the device to a tree and power off of a car battery until the on site power is available?

    Using a large external power source with a power on/off timer, running only during daylight hours could save lots of watts.

    I’ve looked into solar for a bird house camera and it was not a trivial project when you get to the short winter days and potentially cloudy skies.










  • Yes. It’s the “put a copy somewhere else” that I’m trying to solve for without a lot of cost and effort. So far, having a remote copy at a relative’s is good for being off site and cost, but the amount of time to support it has been less than ideal since the Pi will sometimes become unresponsive for unknown reasons and getting the family member to reboot it “is too hard”.



  • Take some time and really analyze your threat model. There are different solutions for each of them. For example, protecting against a friend swiping the drives may be as simple as LUKS on the drive and a USB key with the unlock keys. Another poster suggested leaving the backup computer wide open but encrypting the files that you back up with symmetric or asymmetric, based on your needs. If you’re hiding it from the government, check your local laws. You may be guilty until proven innocent in which case you need “plausible deniability” of what’s on the drive. That’s a different solution. Are you dealing with a well funded nation-state adversary? Maybe keying in the password isn’t such a bad idea.

    I’m using LUKS with mandos on a raspberry PI. I back up to a Pi at a friend’s house over TailScale where the disk is wide open, but Duplicity will encrypt the backup file. My threat model is a run of the mill thief swiping the computers and script kiddies hacking in.



  • I had one from Sony a long time ago. It even had a cable you could attach between two of 'em (600 CDs!) so that it could seamlessly start playing another track while loading the next song. I dropped it during a move and the next time I opened the door, it spit gears at me. I had intended to fix it some day, but started watching Hoarders and decided it wasn’t worth it.





  • It depends on what you do with Docker. Podman can replace many of the core docker features, but does not ship with a Docker Desktop app (there may be one available). Also, last I checked, there were differences in the docker build command.

    That being said, I’m using podman at home and work, doing development things and building images must fine. My final images are built in a pipeline with actual Docker, though.

    I jumped ship from Docker (like the metaphor?) when they started clamping down on unregistered users and changed the corporate license. It’s my personal middle finger to them.


  • I’m using Kubernetes and many of the apps that I use require environment variables to pass secrets. Another option is the pod definition, which is viewable by anybody with read privileges to K8s. Secrets are great to secure it on the K8s side, but the application either needs to read the secret from a file or you build your own helm chart with a shell front end to create app config files on the fly. I’m sure there are other options, but there’s no “one size fits all” type solution.

    The real issue here is that the app is happy to expose it’s environment variables with no consideration given to the fact that it may contain data that can be misused by bad actors. It’s security 101 to not expose any more than the user needs to see which is why stack dumps are disabled on production implementations.



  • I was not binding to specific adresses, but was probably a problem with a specific release of Java (Oracle Java maybe.) My distro’s Java was doing weird video things, but the Oracle version was not, but then it could not reach outside the local computer. Debugging logs showed that it tried IPv6 and failed, then quit trying instead of falling back to IPv4. Disabling IPv6 in the Java JRE configuration solved the issue, but set me on the path to “modernize” my network stack. In hindsight, it’s probably not something that I really have the time to take on right now.


  • I’m trying to be progressive, but after thinking outside of my little network and reading the posts here, it seems like there’s still a long way to go before I should consider it. I don’t have a split network at home and it would potentially affect everyone in the house. Additionally, I don’t have serious needs for production-grade network equipment, so the chancs of that cheap usb-to-ethernet adapter with more Chinese characters than English in the instruction sheet has a high probability of biting me.

    This was sort of a wild hare thought of disabling IPv4 vs disabling IPv6 to solve a problem that’s more of an inconvenience. I am probably not ready for this undertaking. Maybe I’ll revisit it when I get around to partitioning my network.