# Plex is not reachable - caused by router?
**URL:** https://forums.plex.tv/t/plex-is-not-reachable-caused-by-router/199567
**Category:** General Discussions
**Created:** [July 19, 2017, 4:33pm UTC](https://forums.plex.tv/t/plex-is-not-reachable-caused-by-router/199567 "2017-07-19T16:33:12Z")
**Posts on this page:** 8
**Page:** 1
### Author:  [@eep](https://forums.plex.tv/u/eep)
#### Post date: [July 19, 2017, 4:33pm UTC](https://forums.plex.tv/t/plex-is-not-reachable-caused-by-router/199567/1 "2017-07-19T16:33:12Z")
Hey, I’ve been having some issues recently - please bear with me as i try to explain.
I had PMS running on an Ubuntu 16.04 LTS box for a few years without issues. In the past month I started getting the ‘Plex is not reachable’ page when trying to access the server through [Plex.tv](http://Plex.tv) and the machine’s local IP.
I spent a little time troubleshooting after reading some of the many issues people were having when disconnected from the internet, but in my case the server always had a connection. After removing the Preferences.xml file I could access the server with the local IP but when trying to log in (using the upper right menu in Plex/Web) I would get the ‘Plex is not reachable’ again. If I tried logging in from the server settings I would receive a nondescript error message (sorry I don’t remember the wording).
Anyway, I decided to cut my losses and overhaul the box as I had been planning to to for a while anyway. I installed CentOS 7 and the linuxserver/plex docker image, and to my surprise the default fresh install showed the same issue. If I tried to log in I saw the dreaded ‘Plex is not reachable’ page, and if I copied over my old server settings I was back to square one.
I stopped docker and installed the vanilla downloadable version and still saw the same results.
At this stage, I stumbled upon a ‘solution’ - if I rebooted my router, the problems went away - at least for a while.
After this long-winded explanation (sorry!), my question is this: what could be causing this within the router?
I use the default port of 32400 which is manually forwarded within the router, and regardless of this issue people can still connect to and stream from the server. I also have upnp enabled on the router ‘just in case’ but don’t see any ports being opened by PMS. I looked up any secondary or potential other ports that PMS might want/need and drew a blank.
Does anyone have any ideas of what this may be?
For the record, my router is a Fritz!Box 7490 running the latest firmware; and while I agree that this appears to be a fault on the router side, what could be happening/not happening on the Plex side to throw this page?
Thanks for reading, and I appreciate any thoughts!
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### Author:  [@Mark\_and\_Ange](https://forums.plex.tv/u/Mark_and_Ange)
#### Post date: [July 24, 2017, 3:04am UTC](https://forums.plex.tv/t/plex-is-not-reachable-caused-by-router/199567/2 "2017-07-24T03:04:25Z")
Same problem for me. I usually get 2 minutes of it working after a reboot, but then it is unreachable
Again.
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### Author:  [@eep](https://forums.plex.tv/u/eep)
#### Post date: [July 24, 2017, 8:06am UTC](https://forums.plex.tv/t/plex-is-not-reachable-caused-by-router/199567/3 "2017-07-24T08:06:17Z")
Hey M&A, which router do you run? It might be partially useful to see if there is any correlation.
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### Author:  [@Achilles](https://forums.plex.tv/u/Achilles)
#### Post date: [July 24, 2017, 8:19am UTC](https://forums.plex.tv/t/plex-is-not-reachable-caused-by-router/199567/4 "2017-07-24T08:19:24Z")
@eep I think you need to take a look a the link below:
[https://en.avm.de/service/fritzbox/fritzbox-7390/knowledge-base/publication/show/663\_No-DNS-resolution-of-private-IP-addresses/](https://en.avm.de/service/fritzbox/fritzbox-7390/knowledge-base/publication/show/663_No-DNS-resolution-of-private-IP-addresses/)
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### Author:  [@eep](https://forums.plex.tv/u/eep)
#### Post date: [July 24, 2017, 8:38am UTC](https://forums.plex.tv/t/plex-is-not-reachable-caused-by-router/199567/5 "2017-07-24T08:38:02Z")
Interesting, thanks @“Ach!lles” - DNS rebind protection is something i know very little about. Could this affect connections from inside the local network, using the local IP of the server?
Frustratingly, my issue is sporadic, and until it happens again I can’t fiddle!
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### Author:  [@Achilles](https://forums.plex.tv/u/Achilles)
#### Post date: [July 24, 2017, 8:53am UTC](https://forums.plex.tv/t/plex-is-not-reachable-caused-by-router/199567/6 "2017-07-24T08:53:54Z")
Yes. You can confirm that by turning off require secure connections in PMS. Refer to this support page:
[https://support.plex.tv/hc/en-us/articles/206225077-How-to-Use-Secure-Server-Connections?mobile\_site=true](https://support.plex.tv/hc/en-us/articles/206225077-How-to-Use-Secure-Server-Connections?mobile_site=true)
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### Author:  [@eep](https://forums.plex.tv/u/eep)
#### Post date: [July 25, 2017, 9:05am UTC](https://forums.plex.tv/t/plex-is-not-reachable-caused-by-router/199567/7 "2017-07-25T09:05:53Z")
I really appreciate the pointers Ach!lles, thanks!
In my router settings I have a ‘DNS rebind protection domain name exemptions’ field. Adding `plex.direct` to the field appears to be what is required.
Thanks again!
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### Author:  [@system](https://forums.plex.tv/u/system)
#### Post date: [January 7, 2020, 11:33pm UTC](https://forums.plex.tv/t/plex-is-not-reachable-caused-by-router/199567/10 "2020-01-07T23:33:02Z")