Can't access server remotely

Plex Media Server Remote Access
1

Server Version#: 1.40.4.8679
Player Version#: Any

I am behind a VPN, but have ports forwarded. I can telnet into my server over a remote network without VPN. I have external port 41898 forwarded to internal port 32400. This was previously working and suddenly stopped.

Telnet log:

❯ telnet 204.x.x.x 41898
Trying 204.x.x.x...
Connected to 204.x.x.x.
Escape character is '^]'.
GET /web/index.html
HTTP/1.1 200 OK
X-Plex-Protocol: 1.0
Cache-Control: no-cache
Accept-Ranges: bytes
Connection: close
Content-Length: 13491
Content-Type: text/html
Date: Wed, 09 Apr 2025 22:39:44 GMT

<!DOCTYPE html>
<!--
   =======   ==
  /==////== /==
  /==   /== /==   =====   ==   ==
  /=======  /==  ==///== //== ==
  /==////   /== /=======  //===
  /==       /== /==////    ==/==
  /==       /== //======  == //==
  //        //   /////   //   //

I am seeing issues about Jumbo frames enabled but have all my network adapters MTU set to 1400:

Apr 09, 2025 16:29:28.710 [133255804713784] WARN - [HttpClient/HCl#4e] HTTP error requesting GET https://v4.plex.tv/pms/:/ip (52, Server returned nothing (no headers, no data)). Network appears to be configured for jumbo frames.

I also keep seeing this issue in my logs:

ERROR - Error parsing allowedNetworks entry ‘’: Invalid argument [system:22]

Logs of me attempting to stream via iPhone and cell network:

Apr 09, 2025 16:24:45.252 [133255796255544] DEBUG - Content-Length of XYZ.mkv is 289843186 (of total: 289843186).
Apr 09, 2025 16:24:45.253 [133255835630392] ERROR - Error parsing allowedNetworks entry ‘’: Invalid argument [system:22]
Apr 09, 2025 16:24:50.780 [133255755844408] WARN - [EventSourceClient/pubsub/45.x.x.x:443] NAT: PMP, timed out waiting for response.
Apr 09, 2025 16:24:50.781 [133255755844408] DEBUG - [EventSourceClient/pubsub/45.x.x.x:443/HCl#47] HTTP requesting GET https://204-8-98-15.c473d3c3cfc747eaa88341f5c55ff73b.plex.direct:41898/identity
Apr 09, 2025 16:24:53.785 [133255804713784] DEBUG - [HttpClient/HCl#47] HTTP simulating 408 after curl timeout
Apr 09, 2025 16:24:53.785 [133255755844408] DEBUG - [EventSourceClient/pubsub/45.x.x.x:443] MyPlex: mapping state set to ‘Mapped - Not Published’.
Apr 09, 2025 16:24:53.785 [133255755844408] DEBUG - [EventSourceClient/pubsub/45.x.x.x:443] MyPlex: Updating device connections (from timer: 0)
Apr 09, 2025 16:24:53.785 [133255755844408] DEBUG - [EventSourceClient/pubsub/45.x.x.x:443/HCl#48] HTTP requesting PUT https://plex.tv/devices/xxx?Connection[][uri]=https://10.x.x.x:32400&Connection[][uri]=http://204.x.x.x:41898&Connection[][uri]=http://192.168.86.111:32400&httpsEnabled=1&httpsRequired=0&dnsRebindingProtection=0&natLoopbackSupported=0&X-Plex-Token=xxxxxxxxxxxxxxxxxxxx
Apr 09, 2025 16:25:00.050 [133255833520952] DEBUG - Failed to stream media, client probably disconnected after 65536 bytes: 104 - Connection reset by peer
Apr 09, 2025 16:25:00.050 [133255833520952] DEBUG - Completed after connection close: [107.x.x.x:24393] 206 GET /library/parts/10481/1700898045/file.mkv (5 live) #2e4 TLS 53344ms 65536 bytes (pipelined: 1) (range: bytes=0-)
Apr 09, 2025 16:25:02.880 [133255804713784] DEBUG - [HttpClient/HCl#48] HTTP/1.1 (9.1s) 200 response from PUT https://plex.tv/devices/xxx?Connection[][uri]=https://10.x.x.x:32400&Connection[][uri]=http://204.x.x.x:41898&Connection[][uri]=http://192.168.86.111:32400&httpsEnabled=1&httpsRequired=0&dnsRebindingProtection=0&natLoopbackSupported=0&X-Plex-Token=xxxxxxxxxxxxxxxxxxxx
4

Wish I could help. I also recently have been denied access remotely to my PLex account. Worked with Verizon for an hour to no avail.

5

What does the following return, if run from a terminal on your Plex Media Server host?
curl https://v4.plex.tv/pms/:/ip

What should be returned is your public IP address. The server uses this to determine what to register with Plex’s servers as your connection information (the IP part of it at least).

Regarding the parsing error, in the web client navigate to Settings → [Select Server Name] → Network. Ensure “LAN Networks” is empty or has reasonable values set. There can be no whitespace in this field (no spaces). So even if it looks empty, make sure by checking for whitespace.

6

Running curl https://v4.plex.tv/pms/:/ip returns my public IP.

I am in the process of updating my server as the app on my iPhone told me it was outdated so maybe that will fix it.

Turns out I had a , in the LAN Networks after an IP address - ex 192.168.86.100/24,. I removed the trailing , and this solved that error so thank you for that solution. I thought it was related to why I was unable to reach my server but unfortunately not lol.

EDIT: Updating my Plex server did not help resolve the issue.

7

For what it’s worth, I moved the VPN and programs requiring VPN to another server and use Plex without a VPN without issue.

8

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