Can you block a device connected to modem?
This varies according to router types but you can mostly add devices to your router's Blacklist under the 'Device Management' section of your access point dashboard/control panel or whatever section that lists out all devices connected to your router. There you'll see “block” user button or something similar.
Prevent web content:
Go to Settings > Screen Time. Tap Content & Privacy Restrictions and enter your Screen Time passcode. Tap Content Restrictions, then tap Web Content. Choose Limit Adult Websites, or Allowed Websites Only.
- Find your router's IP, and type it into any browser's address bar to get to its settings page. ...
- Once you're in your router settings page, look for a setting called Block Sites, Access Restrictions, or something similar. ...
- Once you find the setting, enter the domains you want to block.
- To block Android, Apple iOS, and Google Sync devices, click Mobile devices.
- To block desktops and laptops, click Endpoints.
- To block a mix of device types, click Devices.
An easy way to kick out unauthorized devices from your network is to simply change your wifi password. This will forcibly disconnect all devices from the network, so you will have to sign in again with the new password on all of your devices.
- Open a web browser and type the IP address for your router in the address bar.
- Enter the username and password for the router.
- Click Connected devices, Attached devices, or something similar.
- Check the list of devices connected to your wireless network.
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Enter the following:
- Network Destination: Enter the IP address you wish to block.
- Subnet Mask: Enter 255.255. ...
- Default Gateway: Enter 192.168. ...
- Interface: Select LAN.
- Click the network icon in the lower right corner of your screen by the clock. ...
- Click "Open Network and Sharing Center."
- Click "Change Adapter Settings."
- Click "Wireless Network Connection" to highlight it.
- Click "Disable This Network Device" to block the Wi-Fi signal.
The most accurate way to access a list of connected devices is to log into your router's settings page. If your router was provided by your internet service, such as Spectrum, you may be able to easily log into your account to find this info.
The easiest, most secure method is merely changing your Wi-Fi network's password on your router. This will forcibly disconnect all devices from your Wi-Fi network—even your own. You'll have to reconnect to the Wi-Fi network by entering the new password on all your devices.
How can I see what devices are connected to my router?
- Open a web browser and type the IP address for your router in the address bar.
- Enter the username and password for the router.
- Click Connected devices, Attached devices, or something similar.
- Check the list of devices connected to your wireless network.
- Open the Google Home app .
- Tap Wi-Fi .
- At the top, tap Devices.
- Tap a specific device and a tab to find additional details. Speed: Real time usage is how much data your device is currently using.

Simple answer: No, a person can not see what is on your phone, but can see what you are sending and receiving in the clear.
- Change your password. How can you stop neighbors from using your wireless internet? ...
- Update your router's firmware. It's important to update your router's firmware to keep its security up to date. ...
- Hide your SSID. ...
- Choose a router that supports WPA3. ...
- Use a VPN.
- Open the Command prompt or Terminal in your Windows, Linux, or macOS system.
- Search all the network settings, such as default gateway and IP address, through the command prompt.
- Type the command "arp -a" to view the list of all IP addresses connected to your network.
A hidden network doesn't broadcast the so-called Service Set Identifier (SSID), which is essentially a fancy way to say that it doesn't disclose its name. Such networks are not really any more secure than networks that do broadcast their SSID because finding them isn't difficult.