: Using it on public or shared networks without permission can be considered a violation of service terms or local "computer misuse" laws. Modern Alternatives
The application requires administrator privileges to function correctly.
Obtain the SelfishNetV3 package and extract it to a folder. Install Drivers: Run the WinPcap installer first.
Windows 7, 8, 10, or 11 (Both 32-bit and 64-bit architectures are supported).
The ultimate tool for controlling network bandwidth on local networks is , a lightweight Windows application designed to manage internet distribution among connected devices. Selfishnet V3
Selfishnet V3 is a portable application, meaning it doesn't require a traditional installation. However, it requires a supporting driver to function.
: Allows users to manually set download and upload speed limits for any device connected to the same Ethernet or Wi-Fi network. Device Management
Provide troubleshooting for compatibility settings (e.g., running in "Compatibility Mode" for Windows 7/10/11). :
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Click the icon (green checkmark) to begin enforcing the restrictions. How to Protect Against Selfishnet V3
[Network Discovery Button] ➔ [Select Device IP] ➔ [Enter Upload/Download Cap] ➔ [Click Lightning Icon]
While Selfishnet is a functional tool for bandwidth management, it is often flagged by antivirus software as a "potentially unwanted program" (PUP) or a threat because its core mechanism—ARP poisoning—is a common technique used in man-in-the-middle attacks.
Completely cut off internet access for a specific device with a single click—perfect for troubleshooting or managing screen time. No Router Access Needed: Install Drivers: Run the WinPcap installer first
To run Selfishnet V3 effectively on modern systems like Windows 10 or 11, certain dependencies must be installed:
To disconnect the device: Check the box under the column. Step 6: Activate the Controls
The choice depends on your needs. For permanent, set-it-and-forget-it configurations, router QoS may be superior. For on-the-fly adjustments and immediate problem-solving, Selfishnet V3 is unmatched.
Navigate to the "SelfishNet Win 7 & Up" folder. Right-click on the Selfishnet executable and select "Run as administrator." If you want to avoid repeating this step, you can permanently set the program to always run with administrator privileges through its compatibility settings.
Extract the file contents using your archive utility into a dedicated desktop folder.
SelfishNet exploits how this protocol works. It sends falsified (spoofed) ARP messages onto the local network. This action links the attacker's MAC address with the IP address of a legitimate device, such as the network gateway (the router). Consequently, any data intended for that gateway or device is misdirected to the computer running SelfishNet. By inserting itself as a "man-in-the-middle," the program can effectively monitor, limit, throttle, or drop data packets flowing to and from a target device before passing them on, allowing it to control the bandwidth.