Not available outside network/double-nat

General Discussions
1

I have had issues in the past with plex saying that remote access is unavailable outside my network but even when saying that I was still either able to connect directly or indirectly according to plex. I recently updated to the latest server update and since then I have been unable to connect outside my network. I have looked all over the forums in hopes of finding something that would work, but haven’t so far. I have some basic knowledge with computer networking but this issue seems to be beyond me.

I have greenlight fiber internet, my modem is a nokia g-010g-a, I have that connected to a tp-link AC1750 V.2 router and than all the wired connections are through a Netgear GS524T. All of the devices connected (wired and wireless) on the network will play my media.

I have tried some of the solutions that have been suggested on other posts but none have worked, ie. dhcp address reservation, DMZ, etc. I would appreciate any ideas/info as to what the issue might be.

Thanks

2

You mention double NAT in the title, but not the message. Does it mean you know you are in that situation?

Here’s a Help article about troubleshooting:

3

Yes, sorrry, when I go to the remote access page on the server plex states as a tip that it thinks I am connected through multiple routers and/or other devices, which it is, it is wired to the switch, which then connects to the router and then the modem. I am not sure how to confirm this.

4

There is info in that help page that may help to confirm.

5

I have looked at that page before, but didnt remember seeing a certain section of it. From what it says there I think my ISP uses some type of NAT.

6

Yup, that is a double NAT situation. You need to configure these properly or set the netgear to bridge mode

7

The netgear gs524t is a switch, which to my knowledge can not be set to bridge mode. Or can it?

8

A switch wouldn’t have NAT. What about the Nokia?

9

I have looked online and havent found any mention of a way to access the nokia modem. It looks like my ISP is using either CGNAT or LSNAT. I have found reddit/facebook posts talking about them using NAT, and that has disrupted remote servers and other things. And also about them offering static ip addresses for an additional cost. If I were to get one of these would that fix the issue i’m having? It seems like in the posts that they talk about it doing so.

10

I’m no expert on this, but that is one of the suggestions on the Help page I linked.

Can the TP-Link be put into Bridge mode? If the ISP is handling NAT, and it can’t be changed, I would try that first, before going to the expense of a static ISP.

11

Ah sorry.

If either of these is being used, you won’t be able to get remote access working. There is no work around, not even setting your devices to bridge mode will help.

12

Nowadays ISPs use CGNAT by default. Only if you contact them and ask, they will sometimes give your router a public IPv4 address (and thus remove you from CGNAT).

Some ISPs let you have it for free, some will ask for more money, and some say just “no”.

13

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