Unknown devices from someone else's network showing up on LAN - Netlink hg323rgw

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Adithya

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Location
Kerala
ISP
BSNL | Jio
Hi I've recently switched to BSNL FTTH from ADSL and the cable was installed by my local tv cable provider. I'm not familiar with how this network works exactly but I am seeing other people's devices on my home LAN.

I can see desktops, laptops, TVs, phones, 1 IP Camera all belonging to some other household networks when scanned with Fing. Youtube app prompted me to connect to a LG Smart TV which I don't have. Windows Explorer shows me PC's and Laptop's to connect to in the network tab. I didn't try to connect but they do respond to ping.

These are not showing up on my modem. Only my own devices are. I've attached the Fing scan results below (32 devices online at this moment apparently, I've marked my own devices with [OWN] for you guys to see clearly). There are other Nokias, OPPOs, Huaweis, iPhones which I don't own nor are they connected to my modem. I don't know whom to complain about this.

I've checked my configuration and it didn't have Port binding checked, after I've binded all 3 (2 LAN's and 1 WLAN), most of these will dissappear but still 1-2 laptops and a couple of phones will remain. So it probably isn't the reason but it somehow made it less worse.

The BSNL engineer set up my modem WAN with "Turn off LAN DHCP" ticked. I've turned it off but it made no difference.

I'm now scared to turn on file sharing on my desktop because if I can see other people outside LAN then they should be able to see me as well don't they?

Edit: A bit more details since people seems to misunderstand this, I know, I've never seen anything like this either.

These devices are not on my Wi-Fi. Even If I disable the wifi, they still show up. They seems to show up straight from WAN from some other modem in some other household. I know it's not anywhere near here, I live in a rural place where there aren't any houses with an LG Smart TV, not for a few kilometres at least.
 

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Goto WLAN settings and change the WiFi password there.
 
@PranjalT you misunderstood. I've already done that. No one is on my wifi, even if I turn it off completely. These devices show up from WAN. They are not listed on the router. They can only be seen by scanning and seems to fill up DHCP, I can't use the IPs these devices get from their own network. They belong in some other networks from some other households.
 
Then there's nothing to be worried about. You're seeing them because they're in the same IP subnet of 192.168.1.x and the scanner showing everything in your IP range.
 
Change the IP DHCP pool in your Modem to 192.168.10.1 - 192.168.10.100 and reboot the modem. Try scanning then.

But am finding it hard to believe that they're not in your network. Please share snaps of Active Devices in the modem
 
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Changed IP Address and DHCP pool to 192.168.10, saved and restarted but nope it turned back to 192.168.1.1.
 


Then there's nothing to be worried about. You're seeing them because they're in the same IP subnet of 192.168.1.x and the scanner showing everything in your IP range.

But they're not on our network, shouldn't they be only available within their network?
 
Change the IP DHCP pool in your Modem to 192.168.10.1 - 192.168.10.100 and reboot the modem. Try scanning then.

But am finding it hard to believe that they're not in your network. Please share snaps of Active Devices in the modem

These are all mine.
 

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And this is from fing. 192.168.1.4 and 192.168.1.6 belongs to this network as well, I forgot to label them as [OWN]. Multiple devices with same IP as well. They couldn't have been from this modem.
 

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