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Setting up your own VPN (lemmy.fmhy.ml)
submitted 1 year ago by Coldus12@lemmy.fmhy.ml to c/selfhosted@lemmy.world
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What do you guys use / recommend to set up your own VPN to access your LAN services remotely?

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[-] goodhunter@lemm.ee 1 points 1 year ago* (last edited 1 year ago)

hi, i finally found some time to dig into this. Oddly, I think I got a functioning setup, although it did a bit differently in the end. If you may, please advise if I indeed reached completion, or I have it set suboptimal.

  1. I installed Tailscale gui natively on my mac mini, and ios devices.
  2. I tried following up on your advise of creating DNS records. First in Cloudflare, but since I already set a wildcard entry as type CNAME/*/mydomain.com/DNSonly/TTLauto I wasn't allowed to add type A record with a similar wildcard entry. I need this existing CNAME line for Traefik to work my SSL certificates (as far i understood). Then I tried setting it up through the DNS>custom Namespaces within Tailscale admin console instead. An entry would look like service.mydomain.com and for ipv4 the local ip of the mac mini. But I wasn't sure about the config as it wasn't working. Then i tried the Tailscale ip 100.xx.xx.xx, to no avail.
  3. I thought I needed to advertise routes for my local network, so I did. As similar to --advertise-routes=192.168.68.0/24. And later instead the docker network 172.23.0.0/16. Still didn't do it.
  4. As I am a NextDNS user I set the ID number in Tailscale>DNS>Nameservers as the Global nameserver and checked Override local DNS.
  5. In the NextDNS config I defined a Rewrite function as *.mydomain.com to the Tailscale IP of the local machine 100.xx.xx.xx . And boom, I can access the servers from my idevices over the Tailscale vpn tunnel.
  6. I then tried to tear down the setup again. It seems the advertise routes from (3) doesn't do anything, so I removed it again.

Open for any suggestions on this hacked attempt.

Update: yes found an issue. I can only access the services with tailscale enabled. I suspect the rewrite is causing an inproper pass through without the tunnel, as that the tailscale ip cannot be reached.

Update 2: I changed to rewrite to the local ip address instead, similar to 192.168.68.110. I think it works now when accessing within the local network without tunnel and externally with the tunnel.

[-] appel@whiskers.bim.boats 1 points 1 year ago

Seems like you got it to work, I'm not sure about traefik requiring that cname for ssl, our setup does not. But yes the way we've done it does require that tailscale is always enabled. Even when on lan. If you've managed to setup both LAN and tailscale connections for one thing that's pretty cool.

this post was submitted on 19 Jul 2023
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