How to watch devices availability in a network

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21

Here is another solution, but that depends on your router.

Mine supports it, so I just poll it every half a minute or so to get a list of all the MAC addresses and parse it to check if my or my wife's phones are connected.

22

@darabontors At this point we're at the evaluation and bidding stage (my prototyping was more an exercise to gauge what could be done in house as a negotiation tool for dealing with established vendors,) so unfortunately I can't disclose any real details as of yet. Once we're up and running, though, I hope to do some tinkering in NR to extend functionality, so hopefully I'll have something to show off here in a year or so.

23

OK. Thanks. Please let me know when you have some details.
Best wishes,
Örs

24

I've been using this - but for some reason whilst the flow works beautifully the UI stubbornly won't show the LED array only the gauges showing latency. Anyone got any time to try it out?
Cheers

25

It looks like you posted this question to the author of that flow and he responded.

26

i´m using :

[{"id":"a91813f7.16fba","type":"inject","z":"7c23461f.a9ac38","name":"","topic":"","payload":"","payloadType":"date","repeat":"60","crontab":"","once":true,"onceDelay":0.1,"x":130,"y":500,"wires":[["f7308882.007ac8"]]},{"id":"f7308882.007ac8","type":"exec","z":"7c23461f.a9ac38","command":"sudo nmap -sn 192.168.178.0/24 | awk '/Nmap scan report for/{printf $5;}/MAC Address:/{print \"|\"substr($0, index($0,$3)) }' | sort","addpay":false,"append":"","useSpawn":"false","timer":"","oldrc":false,"name":"scan subnet","x":330,"y":500,"wires":[["16b4ae92.2180e1"],[],[]]},{"id":"16b4ae92.2180e1","type":"function","z":"7c23461f.a9ac38","name":"Subnet Devices Array","func":"let response = msg.payload.split('\\n');\nlet found = []\nlet device\nresponse.forEach ( line => {\n    if ( line.indexOf('|') > -1 ){\n        device = {\n            IP : line.split('|')[0],\n            MAC: line.split('|')[1].split(' ')[0],\n        }\n        found.push ( device )\n    }\n})\nmsg.payload = found;\nreturn msg;","outputs":1,"noerr":0,"x":560,"y":500,"wires":[["f8515636.9f59e8"]]},{"id":"38eb79b3.a57346","type":"debug","z":"7c23461f.a9ac38","name":"","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"false","x":1070,"y":500,"wires":[]},{"id":"f8515636.9f59e8","type":"ui_template","z":"7c23461f.a9ac38","group":"126ec89.5132637","name":"Im Netzwerk vorhandene Geräte","order":1,"width":10,"height":12,"format":"<table id=\"table\" border=\"1\">\n <tr>\n <th>IP</th> \n <th>MAC</th>\n </tr>\n <tbody>\n <tr ng-repeat=\"row in msg.payload\">\n <td ng-repeat=\"item in row\" >{{item}}</td>\n </tr>\n </tbody>\n</table>\n\n","storeOutMessages":false,"fwdInMessages":true,"resendOnRefresh":false,"templateScope":"local","x":840,"y":500,"wires":[["38eb79b3.a57346"]]},{"id":"126ec89.5132637","type":"ui_group","z":"","name":"Netzwerkgeräte","tab":"f51efc73.89572","order":1,"disp":true,"width":10,"collapse":true},{"id":"f51efc73.89572","type":"ui_tab","z":"","name":"Geräte","icon":"fa-television","order":2,"disabled":false,"hidden":false}]
27

I don't know why as I already have a system working.

But I'm curious.

I'm not getting how the flow works from that screen shot.

Could you indulge me with the code? (BTW, I don't have DSM installed yet.)
Or explain what the two "yellow" nodes are/do?
And how you configure the DSM......?
It can't just "out of the box" understand what is happening - can it?