Another good reason to use client isolation on AP's!

Bryce D
NETAGO

From: [email protected] 
[mailto:[email protected]] On Behalf Of ralph via Mikrotik-users
Sent: Tuesday, September 27, 2016 14:08
To: 'Mikrotik Users' <[email protected]>
Subject: [Mikrotik Users] A new question- blocking Chromecast

Lots of people are abusing the fact that I allow peer-to-peer connections on my 
APs (Ubiquiti).
They are tying up bandwidth sending video, and then if they have a poor signal 
they are complaining to me.
I want people to use a local router and set up a LAN on their boat, rather than 
using my WAN as their own personal LAN.

I would like to block Chromecast but not restrict peer-to-peer.

According to some information I found,  the Chromecast protocol  uses a UDP 
transmission to 239.255.255.250 on port 1900 for its discovery.
How would I block that on the Mikrotik Hotspot?  I know I should be more up on 
firewall rules but I never can find the time to get deep enough into it.

The info I found (and it was all I could find) was on a Cisco site.  
http://www.cisco.com/c/en/us/td/docs/wireless/controller/technotes/7-6/chromecastDG76/ChromecastDG76.html

Thanks
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