# \[APP\]\[Pro\] NetScan - Track devices on your local network using ARP and TCP checks

**URL:** https://community.homey.app/t/app-pro-netscan-track-devices-on-your-local-network-using-arp-and-tcp-checks/47454
**Category:** Apps
**Tags:** app
**Created:** [May 16, 2021, 9:00am UTC](https://community.homey.app/t/app-pro-netscan-track-devices-on-your-local-network-using-arp-and-tcp-checks/47454 "2021-05-16T09:00:48Z")
**Posts on this page:** 1
**Showing post:** 34

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### Author: ![Peter\_Kawa](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/peter_kawa/32/173848_2.png) [@Peter\_Kawa](https://community.homey.app/u/Peter_Kawa)
#### Post date: [June 13, 2021, 1:39pm UTC](https://community.homey.app/t/app-pro-netscan-track-devices-on-your-local-network-using-arp-and-tcp-checks/47454/34 "2021-06-13T13:39:05Z")

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Hi Adrian,  
I didn’t know/realize it can detect the internet connection also.  
But it only works with my own internet IP address, not with f.i. 8.8.8.8, or both [www.athom.com](http://www.athom.com) IP’s.  
But, using the TCP device port 80 works for webservers 😉  
Just FYI

By the way, the memory graph is still around 8MB’s 👌

> [@How to detect an internet deconnection?](https://community.homey.app/t/how-to-detect-an-internet-deconnection/48385/5):
>
> Hi Jeremy, I tested the suggestion of @RonnyW and it works using NetScan with my own internet IP address, but not with f.i. 8.8.8.8 I pulled the plug from my internet wall outlet to simulate it.

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