I am still very much a novice in the self-hosting space, Linux etc. having fairly recently switched from using macOS as my daily driver and not tinkering much at all.
One of the things that often confuses me is networking and making sure my setup is secure. This is currently holding me back from hosting more stuff locally that I would require access to from outside my home, as I am afraid I am doing something that could severely compromise my data. It can sometimes be difficult to follow explanations from more advanced users due to the many different components of networking and security, and different layers of abstraction, which prevents me from following completely. I might understand one particular case, but then be unable to make connections to another one. So I would want to research this more intensively, and ideally I would end up being able to easily understand the data flows - the paths the data takes (e.g. I make a HTTPS request to some server from my laptop, how is that traffic routed correctly through my local area network and later the wide area network), in what forms (i.e. different protocols, encryption layers etc.).
In communities like this, I see there are a lot of very knowledgeable people who maybe could recommended any resources that cover this from the basics and onto more advanced stuff? Maybe a textbook from a university course on ICT that is considered particularly good? A YouTube channel with great explanations and visualizations? I am looking both at home LAN and internet in general. Enterprise level networks are not very interesting to me (at the moment).
I don't like this. That's super weird and I would not trust it. I'm sure it's "fine" but I'd hard pass on that. Set up my own 100% for sure.
I don't understand. Can I get a pic (MS Paint or real or something) or some brand names or something? I understand if you don't want to show, I'm just not sure what you're saying.
My ISP gave me a white box, I plug a fibre cable from the street Plus power from the outlet into this box. Then I have a cat6 cable from this box (port 1 as per their instructions) into the WAN port of my firewall. My Firewall has a Public IP on it's WAN interface and I have 4 ports for LAN. The same firewall gives off wifi to the rest of my house.
Yeah, here's one of them for a VPS I rent: 30 * * * * root dnf clean all ; dnf -y update && needs-restarting -r || /usr/sbin/reboot
I actually run things in Kubernetes and use https://github.com/keel-hq/keel to keep my pods (containers) up to date.
The port opening on the router is unnecessary and could be a bad thing. If you're using a VPN with port forwarding I'd close the one on your router right now. The "open" port is open via the VPN connection so they do all the opening for you, you just need to make sure your PC is on the VPN.
Go to this site with out your VPN on, it will tell you if you're using your raw internet to download torrents: https://iknowwhatyoudownload.com/en/peer/
it sounds like you might be doing that, or at least have the ability for people to connect to you via your ISP (bad) and not over the VPN (good)
Yeah, good to have my suspicions confirmed. This setup is standard where I live now, and I don't think you can get around it. First I noticed this was a coupe of years back. I'll start finding a suitable router and set it up in bridge mode.
I have two small boxes in a cabinet - one is receiving a white cable that comes from outside my home, and outputs an optical signal that goes into the other box. This other box also gets a coax cable from outside my home, and outputs an ethernet connection that is connected to what my ISP calls a WiFi router. This has additional LAN ports as well.
I could not access this site now, however, I've checked this with the torrent address detection tool on ipleak.net many times before. I recently had an issue where my real IP would show for a second if I disconnected my VPN connection manually, but I solved this. My torrent client is bound to the interface created by the VPN client. At this point I am pretty sure it is fine. But I will close the ports again.
humm, I've never seen or heard of this. I've only ever been provided one box by my ISP. I have two guesses... Either you can replace your WiFi router with your own and everything will be okay or you'll have to add a 3rd that is your own and Plug it into the WiFi router and ask them to put it in bridge mode. My guess is they can help you a lot better then me guessing.
perfect. Then you can close the open port on your router for sure. My Torrent client (rutorrent) shows what IP and port I'm using at the bottom, these are my VPN IP and the port I opened with the VPN provider.
From what I've understood from previously looking up this with my ISP, is that I connect my own device to the WiFi router they gave me. In that case I have four boxes... :) But I will naturally double check this before going forward with it, and then I might also get some clarification on what the two different boxes in my cabinet are. Bridge mode can be activated through a switch in that online portal though.
I've closed them and everything still works the same way. So I guess the ports have just been open for anyone to say hello. A good example of one of the many areas where I get confused because I don't truly understand all this stuff very well. I learn more every day, and I've gotten plenty of tips in this thread, but it makes me a bit sad that self-hosting safely requires spending a lot of time learning about this stuff, and requires continued vigilance to keep things updated. This excludes a lot of people from enjoying the freedom that comes with data ownership and control. My issue is of course not with the self-hosted solutions - the developers have done excellent work to make these tools available to people including myself, who is not an IT professional. My issue is rather that the society at large has given the major tech players carte blanche to do whatever they want for such a long time, that true privacy is so distant for most people. Some good things going on in Europe to combat this (at least against corporate malpractices), but still not nearly good enough.
Thanks again for all your answers. I really appreciate you taking the time to educate me on this stuff. It's time for me to log off the computer now, and stare at a large screen in my living room instead. The season finale of Stargate SG-1 season 6 awaits :)
Oh, before I go, I just realized that the boxes in the cabinet also handles fiber TV signals.