Hi,
i noticed plex is hammering (around 300 times a day) my firewall (to internet) with port 5351 requests, is there a way to disable plex from doing so ? Or exclude my firewall from being hammered.
Couldn’t find it back in the forums and sorry if i missed it.
in short : how to stop plex doing 5351 udp requests to firewall .
thanks,
Can you please show logs / socket traffic information?
outbound ports are assigned by the Operating System.
There is a normal amount of LAN-local broadcast traffic to the broadcast addresses.
If you have inbound requests being blocked, please show this data as Plex as NO services at that port UDP. All normal Plex traffic is TCP
Does it have anything to do with “enable network local discovery” in plex?
I have 6 linux servers all same build except on one there is plex (and nothing else).
ulogd[4325]: id="2001" severity="info" sys="SecureNet" sub="packetfilter" name="Packet dropped" action="drop" initf="eth0" srcip="10.0.1.25" dstip="10.0.1.1" proto="17" length="30" tos="0x00" prec="0x00" ttl="64" dstport="5351"
10.0.1.1 is firewall
10.0.1.25 is plex
Yes. SSDP queries do run. They verify the outbound path to Plex.tv, maintain your Remote Accessibility for use outside your LAN, and see if any new devices (players) have been added.
300 per day is a fair estimate. The schedule should be 1 ping each 5 minutes: (60*24)/5 = 288
Nice, so how do i make plex stop doing that so my logs dont get polluted (asport 5351NAT-PNP to internet is prohibited)- and my firewall stops hating my plexserver. 
If at all possible
Would turning off “enable network local discovery” change something ?
SSDP traffic does not extend to the internet. I don’t see why you can’t simply ignore the packet (drop) it’s not a concern. It is LAN-local broadcast only. If you want that disabled, turn off enable network local discovery BUT BE WARNED you’re turning off ALL ability for PMS to find your router and any devices on your LAN.
My best recommendation is to suppress the message in the firewall, not shoot the messenger
Hi,
thanks for the help. I guess ill block drop and ignore it then. At least i know for sure where its coming from now.
