Hi! I hope this is the right community to ask.

Next week I will be on the road for 5 Days for work. I have quite some spare time, so I thought I would dig up my raspberry project again and hopefully finish it.

I need it with me, because it controls some hardware, so a VPN to home does not work. So only option I could think of, is to connect the pi directly to my laptop via an ethernet cable. As far as I understood from some research is that I would need to install and run an DHCP server on my laptop, which they did not recommend. Alternatively they suggested to just take a router and plug both devices in there. I don’t really have a spare router, so that’s not an option either.

To be hones it confuses me a little, that there does not seem to be a standard for connecting to a device directly over a single cable and login with a user account.

Any recommendations how I can work on the pi like with ssh?

Thanks a lot!

  • JASN_DE@lemmy.worldEnglish
    14·
    9 months ago

    As far as I understood from some research is that I would need to install and run an DHCP server on my laptop, which they did not recommend.

    Or simply set up the Pi with a static IP.

    there does not seem to be a standard for connecting to a device directly over a single cable and login with a user account.

    There is. A cable. You just need two non-identical IPs from the same subnet, e.g. 10.0.0.1 and 10.0.0.2 or whichever you want from the private ranges.

    • poVoq@slrpnk.netEnglish
      2·
      9 months ago

      I remember from back in the day that you need a "twisted pair” edit: ”cross-over” cable though, or do modern ethernet ports automatically adapt to that now?

      • apprehensively_humanEnglish
        4·
        9 months ago

        You’re thinking of crossover cables, though I’m not sure if those are still necessary.

        • rtxn@lemmy.worldEnglish
          4·
          9 months ago

          Most modern NICs can auto-negotiate the Rx/Tx circuits on either kind of cable, but I’m not sure about RPi.

            • IsoKiero@sopuli.xyzEnglish
              2·
              9 months ago

              If I remember correctly, 1000Base-T standard has a requirement that device has to negotiate pinout on the fly. No matter which pin is connected to which. Obvioiusly just randomly wiring a cable up has other problems, like signal-to-noise, but in theory it should work even if you make a cable that’s as unstandard as you can make it.

              • jkrtn@lemmy.mlEnglish
                1·
                9 months ago

                That’s amazing. I would love to see the algorithm for that. Hopefully I’ll find a nice explainer if I search around.

      • BearOfaTime@lemm.eeEnglish
        51·
        9 months ago

        Twisted pair refers to the twisting of the wires in the cable to reduce crosstalk.

        Crossover cables enable permit connecting two non-sensing ports together.

        • poVoq@slrpnk.netEnglish
          3·
          9 months ago

          Right 🤦‍♂️ It has been a while. I corrected it in the original post now.

          • BearOfaTime@lemm.eeEnglish
            11·
            9 months ago

            I hear ya. I know all this stuff, but dammit if it isn’t hard to access sometimes! Haha

      • kuneho@lemmy.worldEnglish
        2·
        9 months ago

        I think it doesn’t matter nowadays. Network interfaces are smart enough to twist them internally, or at least, this is what I experienced. I have no idea when did I had to use specifically a crosswire cable, all of my ethernet cables are patch cables for a while now.

        So, it shouldn’t be a problem.

    • lemmyingly@lemm.eeEnglish
      2·
      9 months ago

      I think this method should be the top answer.

      I connect directly to devices without a router most working days for work and this is the method we use because it’s simple and effective.

    • Bitflip@lemmy.mlEnglish
      1·
      9 months ago

      This for sure, and bonus points for “USB Ethernet gadget” mode if you have a 4 or zero ;)