: The application must be "Run as Administrator" to access low-level network protocols.
: If you want to kick a user off the network entirely, you can simply check the "Block" box next to their device.
For the software itself, you can find the source code and documentation on Are you interested in how to install the tool, or are you looking for a security analysis of its ARP spoofing method? AI responses may include mistakes. Learn more
Manually map your device’s IP address to the router's MAC address to prevent spoofing. Selfishnet V3
If a speed limit isn't enough and you need to stop a device from accessing the internet entirely:
The "Block" feature allows you to completely restrict a device from accessing the internet while still allowing them to stay connected to the network.
Selfishnet is a lightweight, portable application for Windows that allows a single user to act as a "network administrator" without needing access to the router's main configuration page. It is primarily used to prevent "bandwidth hogs"—devices performing heavy downloads or streaming—from slowing down the rest of the network. How It Works: ARP Spoofing : The application must be "Run as Administrator"
If the offender is an unauthorized user, changing the Wi-Fi password is the quickest way to remove them from your network. Conclusion
Think of it as traffic law for the 21st century. You become the crossing guard, the cop, and the VIP limo — all at once.
To lift the limits, click the "Stop" icon and uncheck the blocked boxes. Important Considerations and Safety Warnings AI responses may include mistakes
Because Selfishnet V3 relies on low-level network packet manipulation, it cannot run as a standalone executable out of the box. It requires a specific driver framework to interact with your network interface card (NIC). Essential Prerequisites
Click the "Network Discovery" icon (usually a magnifying glass) to detect all devices on the network.