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Cake day: June 18th, 2023

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  • One of the biggest problems they would have is just pointing their communications equipment in the right direction. The Voyager probes have a complicated guidance system (AACS) which takes input from a three-axis gyroscope and several other reference instruments to keep the 3.7m antenna pointed at Earth. If the antenna goes out of alignment then the radio beam will not hit Earth and will not be received.

    The only reason this works is that the Deep Space Network on Earth is actively listening for the signal from the probes, and the people operating it know exactly what direction to point the receiving antennae to get the signal from the probes. If you don’t have very precise targeting you probably won’t get the signal.

    Next year Voyager 1 will reach a distance of one light-day from Earth and it’s already a very difficult problem that is only solvable because it was planned for extensively prior to launch, so never mind trying to accomplish this at a distance of hundreds of light-years with no planning.


  • This ^. You can think about a radio source just like a visible light source. It fades out over distance because the energy emission is spreading out. If there are other light sources that are of similar or greater strength between you and that light, it will be basically impossible to distinguish the one light that you care about from everything else.





  • Encrypting the connection is good, it means that no one should be able capture the data and read it - but my concern is more about the holes in the network boundary you have to create to establish the connection.

    My point of view is, that’s not something you want happening automatically, unless you manually configured it to do that yourself and you know exactly how it works, what it connects to and how it authenticates (and preferably have some kind of inbound/outbound traffic monitoring for that connection).


  • NaibofTabr@infosec.pubtoSelfhosted@lemmy.worldSyncthing alternatives
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    2 months ago

    Ah, just one question - is your current Syncthing use internal to your home network, or does it sync remotely?

    Because if you’re just having your mobile devices sync files when they get on your home wifi, it’s reasonably safe for that to be fire-and-forget, but if you’re syncing from public networks into private that really should require some more specific configuration and active control.


  • NaibofTabr@infosec.pubtoSelfhosted@lemmy.worldWhat do I actually need?
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    2 months ago

    My main reasons are sailing the high seas

    If this is the goal, then you need to concern yourself with your network first and the computer/server second. You need as much operational control over your home network as you can manage, you need to put this traffic in a separate tunnel from all of your normal network traffic and have it pop up on the public network from a different location. You need to own the modem that links you to your provider’s network, and the router that is the entry/exit point for your network. You need to segregate the thing doing the sailing on its own network segment that doesn’t have direct access to any of your other devices. You can not use the combo modem/router gateway device provided by your ISP. You need to plan your internal network intentionally and understand how, when, and why each device transmits on the network. You should understand your firewall configuration (on your network boundary, not on your PC). You should also get PiHole up and running and start dropping unwanted inbound and outbound traffic.

    OpSec first.








  • It is an absolute PITA to keep an email server on the “nice” list so your company’s email traffic doesn’t get spam filtered by every service provider, and the major services (gmail, outlook, etc) are all federating their spam filter lists so many times if you get blocked on one you get blocked on all. There is so much spam to deal with that the filtering is highly automated and there’s little human oversight.

    The point being, it could only take a handful of incidents reporting a company’s email as spam to ruin their reputation and result in email from their domain getting automatically filtered everywhere. So, you know, if they don’t support an easy way to unsubscribe then they are in fact behaving like spammers, so flag them and let them deal with having their domain blacklisted.