Remote access suddenly stopped working

I've had remote access working on my plex server for years but yesterday it stopped working. My ISP uses CG-NAT but that hasn't been a problem until remote access stopped yesterday. To be perfectly honest I dont kbow how it's been working as from what I understand it shouldn't, but it has been. The server is running on an Intel Nuc that uses Mint. I've been using it both to listen to music and watch media without fault from friends/family homes and my phone remotely. Everything works perfectly inside the network but nothing remotely anymore. I've tried both with and without a port forwarding rule on my router. I have pihole running on the same nuc which I've tried both disabling and removing from the routers dns handling. I didn't think this was the problem but I at least wanted to rule it out. Im fast running out of ideas as i can't understand what's different from before. The only thing that's changed on my network is adding a new Switch 2, besides that everything is exactly the same. If anyone has any suggestions I'd really appreciate it!

20 points · 12 comments · view on lemmy.world

12 Comments

pageflight@piefed.social · 6 pts · 144d

I gave up in my lifetime Plex pass and switched to Jellyfin. I haven't missed it constantly getting worse and advertising their products on my server. I know that doesn't fix your problem, but I think your time is better spent on migration than fixes.

lIlIlIlIlIlIl@lemmy.world · 3 pts · 144d (7 replies)

You have a “double NAT” issue (called out in the error message), which means it’s a networking issue.

Absolute_Axoltl@feddit.uk · 1 pts · 144d (6 replies)

Yeah I see that but that same error message has been there for as long as I've been with my current ISP. Assuming that actually is the problem I'm not sure how to solve it.

lIlIlIlIlIlIl@lemmy.world · 1 pts · 144d (4 replies)

google “Plex double-nats fix”

https://www.reddit.com/r/PleX/s/qGpbRYka0z

Absolute_Axoltl@feddit.uk · 1 pts · 144d (3 replies)

Not that exact thread but I've tried following suggestions from similar ones and no luck. I only have one router. It is operating as a wireless router, I had one from my isp but it was a piece of shit so I've never used it. So I have the isp installed modem going directly into my Asus -RT-AX86U Pro. I've just toggled nat off on it and no luck. As i said at the top, everything has been working perfectly for literally years until yesterday and I haven't changed anything. Plex did recently need to change repos to continue getting updates but that was three (ish) weeks ago.

otacon239@lemmy.world · 1 pts · 143d (2 replies)

Don’t put it here, but are you able to confirm that the WAN IP on the router shows a public IP address? If it’s private, that’s the device above handing it that IP and you’ll know what your issue is. If it’s a public IP, everyone can be on the same page that your router is setup correctly.

Absolute_Axoltl@feddit.uk · 1 pts · 143d (1 reply)

If im understanding it correctly then my router shows a private ip. At least the wan ip that my router shows is different to what is shown on here

otacon239@lemmy.world · 1 pts · 143d

Then the device from your ISP is not bridged. You may have to reach out to them and have them properly fix it.

The magic phrase I used in IT for years that got the point across: “I need to bridge your provided gateway so that it acts like a modem. It should provide one public IP directly to my own router with no routing in between.” This usually gets through to them that you know what you’re talking about and what you’re asking for.

Many providers are required to give you a schpeal about how this is a security risk and make it sound scary, but just accept it and move on. The rare provider is terrible and literally will not let you bridge their hardware, and to that, I hope you have at least one other option available to you.

ChicoSuave@lemmy.world · 1 pts · 143d

Double NAT mean you have 2 routers assigning DHCP. Stop one of the routers from assigning IP addresses by setting it to Bridge mode.

Absolute_Axoltl@feddit.uk · 1 pts · 144d

I forgot to add that I have a lifetime plex pass

Changer098@lemmy.dbzer0.com · 1 pts · 143d (1 reply)

I had this happen to me too. For some reason, my Plex tunnel kept working for a little longer after my ISP enabled CG-NAT. Sometimes you can contact your ISP for a static IP but the solution to this is to use a tunnel of some sort, like a Cloudflare tunnel or Tailscale or a NGINX reverse proxy on a VPS provider like Hetzner or IBM Cloud or AWS Lightsail.

Absolute_Axoltl@feddit.uk · 1 pts · 143d

I can get a static ip but it's £8 a month. I could tolerate it but I've been with this isp for I think a year now and it's been using CG-NAT the whole time. It has been working the whole time! This is what is driving me nuts, it has been working with no issues for a long time and suddenly it doesn't.