Thanks. Please let me know if you need any other diagnostic data

  @David-TP 

 

Hi further to this the Intrusion protection is stopping my NAS from running local PLEX services blocking it opening ports to the server locally when on the LAN. Port 80 even gets blocked so can't even get to Plex admin server.

 

Thought it was the NAS or Plex itself but no, again Intrusion Protection firewall is blocking local IP traffic. 

 

The error is below.

 

It seems it's related to local lan being blocked for permitted firewall transactions even in the same subnet same as the printer issue I raised below. 

 

The only way to fix it is to turn off Intrusion prevention and restart the Router. I have port forwarding enabled for WAN traffic to this Plex server but that doesn't make a difference to local traffic. 

 

To make it even work a little it's intrusion protection off or ... Reboot NAS and Router at same time and then it clears for a while. However firewall kicks in as soon as receiving devices tries to skip or rewind.  Then router seems to quarantine the IP and it's dead even for port 80 access. 

 

This only happened since new firmware update.

 

In the case below the NAS is Synology DSM running Plex on static IP 192.168.1.100 address to serving DHCP client on 192.168.1.115 address

 

I'm getting alot of these  Linux logs from the firewall since the new update.

  @David-TP Thanks David - yes I emailed back to Sys Eng with the same as above. The post above has a bit more detail and wasnt sure if I needed to raise a new ticket with new logs. I think they are possibly related in terms of the firewall rules being applied. 

 

Thanks will keep in touch with them directly. 

 

Mark

  @HelpFixDecoApp 

 

Hi yes thats the workaround I used already to diagnose the problem is firewall based on the Deco. However its not suitable for long term design. Its blocking local LAN traffic as well against the firewall rules. 

 

As it says - "Intrusion Prevention - Protects your home network and applications against external attacks and eliminates vulnerabilities" - however this is also blocking internal traffic now.

 

As it says on the other link - Intrusion Prevention System definitely needs a whitelist.