Cyknight Posted October 21, 2016 Share Posted October 21, 2016 Yes you could run a controller or controller+essentials on it's own vlan and switch. This at least partially shields it from any errors or incompatible traffic outside of the VLAN. Is it common practice? No, not at all. It creates an overly complex setup with a lot of potential human error/setup error locations - and is normally completely overdone. Can also severely limit functionality, and is expensive as heck within residential terms (even for multi-million dollar houses). The only time I've done it is in a major C4 system in a major corporation's network - well to be fair, I guided their IT department to do it. The very fact that I'm talking 'department' vs 'person' sort of hints at the scale of there networking here. I would assume this is done in hospitality setups - but we don't do any so can't tell you for sure. Link to comment Share on other sites More sharing options...
christophers Posted October 21, 2016 Share Posted October 21, 2016 mDNS doesn't generally take a network down, however, if a device is abusing multicast, or if you have your switch set to broadcast mDNS packets across multiple subnets (not many do this) then that can cause floods. depending on the switching platform you use, storm control could keep this to a minimum and is applied per port Link to comment Share on other sites More sharing options...
Cyknight Posted October 21, 2016 Share Posted October 21, 2016 PS - wrong character, though same actor? Link to comment Share on other sites More sharing options...
Dave w Posted October 21, 2016 Share Posted October 21, 2016 wireshark is your friend......it will clearly show this activity and the originating device. Link to comment Share on other sites More sharing options...
wappinghigh Posted October 22, 2016 Author Share Posted October 22, 2016 Ok. It has just crashed again. And this time I was a witness to it happening. It happened when I was trying to upload firmware on a Vigor 800AP. And the network sprang back to life when I powered up and down a small set of devices on a switch daisy chained off the main switch...one of which is my QNAP that I have been running these latest two mDNS music servers.. (which have been added in the last 1-2weeks. Roon and Asset UPnP) There was a clear cause and effect here... trying to add firmware to AP...network crashed. Removing AP off line.. Network still down. Router rebooted Network still down. Sub area with QNAP repowered.... bingo network sprung to life within 10-20 secs... Roon has been off. So that is not the problem. Asset UPnP has now been turned off....we shall see how stable things are with that off as well..... I run a Vigor 2380n Router. This time I have had IGMP snooping off all along, so clearly that was not the issue.. . I run ALL unmanaged switches now..Been doing that for couple years, because I know unmanaged is the way to go... found out the hard way with that in early Sonos days.....I run Cisco SG100's 2 x24 and 1x 16. And LinkSYS 2 x8 So I doubt they are the problem?? Can wireshark be applied retrospectively? Link to comment Share on other sites More sharing options...
msgreenf Posted October 22, 2016 Share Posted October 22, 2016 Can wireshark be applied retrospectively? No it can't. That's like asking if you can get video evidence of a crime no one saw. Sent from my Pixel C using Tapatalk Link to comment Share on other sites More sharing options...
wappinghigh Posted October 22, 2016 Author Share Posted October 22, 2016 LOL Link to comment Share on other sites More sharing options...
wappinghigh Posted October 22, 2016 Author Share Posted October 22, 2016 Ok.. but I could run it, then turn on/off the ? offending music servers right? And see what happens.. what do I look for..? and would you need wireshark running when the network crashed? I now suspect it is Asset UPnP... Link to comment Share on other sites More sharing options...
wappinghigh Posted October 22, 2016 Author Share Posted October 22, 2016 Look guy's this aint easy! LOL! I can tell you.. Nobody deliberately goes down a self destruct road... "hey look Mom...lets sabotage and crash our home network for kicks"! Link to comment Share on other sites More sharing options...
wappinghigh Posted October 22, 2016 Author Share Posted October 22, 2016 *AND* it's relevant to control4 and you guys I might add.. The only reason I added Asset UPnP was because this is one of the few UPnP DLNA music servers that works with Denon Heos.... Link to comment Share on other sites More sharing options...
msgreenf Posted October 22, 2016 Share Posted October 22, 2016 35 minutes ago, wappinghigh said: *AND* it's relevant to control4 and you guys I might add.. The only reason I added Asset UPnP was because this is one of the few UPnP DLNA music servers that works with Denon Heos.... no, it's not really relevant to control4, it's ancillary related. But your problems are not a control4 problem. Link to comment Share on other sites More sharing options...
msgreenf Posted October 22, 2016 Share Posted October 22, 2016 this is like saying my phone crashed, it's related to control4 because it runs the control4 app.... Link to comment Share on other sites More sharing options...
msgreenf Posted October 22, 2016 Share Posted October 22, 2016 i run mini DLNA and have never had any of these problems... Link to comment Share on other sites More sharing options...
Gary Leeds UK Posted October 22, 2016 Share Posted October 22, 2016 Wapp, is Upnp open on your router ? We have always been advised to have this turned off - due to possible security risks. Link to comment Share on other sites More sharing options...
wappinghigh Posted October 22, 2016 Author Share Posted October 22, 2016 Yes it is. Open on the modem. The modem is bridged... Holy crap. The network is down again ... this is a nightmare. Sent from my iPhone using Tapatalk Link to comment Share on other sites More sharing options...
wappinghigh Posted October 22, 2016 Author Share Posted October 22, 2016 I have wireshark ready to run WTF do I do? Sent from my iPhone using Tapatalk Link to comment Share on other sites More sharing options...
wappinghigh Posted October 22, 2016 Author Share Posted October 22, 2016 no, it's not really relevant to control4, it's ancillary related. But your problems are not a control4 problem. Like heck it's not relevant to control4! EAch time the network crashes the HC800 throws a dummy spit and goes off line and my zigbee network crashes.... Sent from my iPhone using Tapatalk Link to comment Share on other sites More sharing options...
wappinghigh Posted October 22, 2016 Author Share Posted October 22, 2016 Surely not... Seriously?? it's one of my new Android Sony TV's?!!! WTF! Could it be??? Link to comment Share on other sites More sharing options...
msgreenf Posted October 22, 2016 Share Posted October 22, 2016 I could be anything that has an IP Sent from my STV100-1 using Tapatalk Link to comment Share on other sites More sharing options...
wappinghigh Posted October 22, 2016 Author Share Posted October 22, 2016 What in the Sony could be doing it? Crikey... what even an app in the sony? This gets crazy.... Link to comment Share on other sites More sharing options...
wappinghigh Posted October 22, 2016 Author Share Posted October 22, 2016 1 hour ago, Gary Leeds UK said: Wapp, is Upnp open on your router ? We have always been advised to have this turned off - due to possible security risks. GAzza ol sport.. When you say "UPnP is open on the Router".. what do you mean? Do you mean UPnP is open on the WAN side of the Modem? Or do you mean UPnP service box is enabled inside the LAN on the router ?.... Link to comment Share on other sites More sharing options...
Gary Leeds UK Posted October 23, 2016 Share Posted October 23, 2016 We have UPNP on our router which the broadband company give us. I was advised to turn this off straight away, can be a easy way for someone to hack your system. http://www.bbc.co.uk/news/technology-37738823 https://threatpost.com/upnp-trouble-puts-devices-behind-firewall-at-risk/114493/ Couple of links Link to comment Share on other sites More sharing options...
wappinghigh Posted October 23, 2016 Author Share Posted October 23, 2016 https://www.google.com.au/amp/s/www.rt.com/document/580aa6b4c36188345f8b45ee/amp Too right this is relevant to HA, the IoT and Control4. Of course it's relevant to Control4.... So what are they doing about it???!!! Sent from my iPhone using Tapatalk Link to comment Share on other sites More sharing options...
wappinghigh Posted October 23, 2016 Author Share Posted October 23, 2016 ....because I have just lived thru a couple of days witnessing this very thing..... Sent from my iPhone using Tapatalk Link to comment Share on other sites More sharing options...
msgreenf Posted October 23, 2016 Share Posted October 23, 2016 Control4 had no impacts of the DDoS on dyn. Not sure why you think they did Sent from my STV100-1 using Tapatalk Link to comment Share on other sites More sharing options...
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