this post was submitted on 19 Mar 2024
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130
My stupidity saved me from being hacked today! (lemmy.giftedmc.com)
submitted 8 months ago by [email protected] to c/[email protected]
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I know, I know, clickbaity title but in a way it did. It also brought in the situation in the first place but I'm just going to deliberately ignore that. Quick recap:

  1. I came home at 3pm from the city, my internet at home didnt work.
  2. checked multiple devices, phones worked out of wifi, I figured I need to restart the router
  3. I login to the router and it responds totally normal but my local network doesnt. (Its always dns, I know)
  4. I check the router log and see 100s of login attempts over the past couple of days.
  5. I panic and pull the plug, try to get into my server by installing an old monitor, works, many errors about dns
  6. Wife googles with her phone, seems I had https login from outside on and someone found the correct port, its disabled now
  7. Obviously, local network still down, I replug everything and ssh into the server which runs pihole as dns
  8. pihole wont start dns, whatever I do
  9. I use history and find I "chmod 700"ed the dns mask directory instead of putting it in a docker volume...
  10. I check the pihole.log, nothing
  11. I check the FTL log, there is the issue
  12. I return it to 777, everything is hunky dory again.

Now I feel very stupid but I found a very dangerous mistake by having my lan fail due to a less dangerous mistake so I'll take this as a win.

Thanks for reading and have a good day! I hope this helps someone at some day.

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[–] [email protected] 3 points 7 months ago (1 children)

I get your point. Ansible is quite interesting too. I do document most of the things I do but I have to admit I have been slacking a bit, recently. There is just so much stuff that needs doing and a lot of interesting projects to learn about that sometimes stuff gets forgotten.

My personal impression of the linux space is still that folks get dumped on by the community for not being immersed in the nitty gritty though.

Thats neither fun nor will it work to get more people interested in linux. People make mistakes, learn to help without judging.

Have a good one.

[–] [email protected] 2 points 7 months ago (1 children)

I know what you mean. Most people mean well, some are a bit too aggressive, but probably also mean well. I honestly sometimes roll my eyes when I start reading about tailscale, cloudflare tunnels etc. The main thing is not to expose anything you don't absolutely need to expose.

For access from the outside the most you should need is a random high port forwarded for ssh into a dedicated host (can be a VM / container if you don't have a spare RaspberryPi). And Wireguard on a host which updates the server package regularly. So probably not on your router, unless the vendor is on top of things.

Regarding ansible and documenting, I totally get your point. Ten years ago I was an absolute Linux noob and my flatmate had to set up an IRC bouncer on my RPi. It ran like that for a few years and I dared not touch anything. Then the SD card died and took down the bouncer, dynDNS and a few other things running on it.

It takes me a lot of time to write and test my ansible playbooks and custom roles, but every now and then I have to move services between hosts. And this is an absolute life saver. Whenever I'm really low on time and need to get something up and running, I write down things in a readme in my infra repository and occasionally I would go through my backlog when I have nothing better to do.

[–] [email protected] 1 points 7 months ago

Thanks for elaborating! This is very helpful and I appreciate it. Will definitely check out ansible.

I think i‘m probably on my way there anyway as I‘m setting up my own git forge and starting to use proper versioning.

Then I‘ll probably try out ansible on some vm or new device. Have a good one!