Selfishnet V3 !link! → < RECOMMENDED >

Features a "Block" checkbox to instantly disconnect a targeted device from the internet without changing the router password.

: Features built-in tools to alter or mask the host computer’s original MAC address for advanced testing purposes.

SelfishNet sends "spoofed" messages to other devices on the network, claiming that your computer is the gateway.

Because Selfishnet V3 works by manipulating the ARP protocol, it can be viewed as a security threat. If someone else in your home or office is using this tool, you can take steps to protect your device.

It is perfect for situations where one person is "hogging" the bandwidth (e.g., large downloads or 4K streaming), allowing you to prioritize your own connection. No Router Access Needed: Selfishnet V3

Download and install the official packet capture driver via the WinPcap Download Page. If you are running Windows 11, ensure you run the installer using Windows Compatibility Mode if prompted. Step 2: Extract the Package

: ARP spoofing tools should only be used on networks that you own or have explicit administrative permission to manage. Deploying this software on public, university, or corporate enterprise networks without authorization is a direct violation of network security policies and can trigger automated intrusion detection systems (IDS).

: Address user concerns by mentioning that reputable versions are often undetected by major antivirus programs like Windows Defender.

If the app crashes on launch, right-click the executable, go to Properties > Compatibility , check "Run this program in compatibility mode for," and select Windows 7 . Features a "Block" checkbox to instantly disconnect a

WinPcap must be installed on the system for the software to capture network packets.

It’s not your internet. It’s shared internet.

: The application is written in C and is a "tiny utility," meaning it consumes very few system resources while running in the background.

If the offender is an unauthorized user, changing the Wi-Fi password is the quickest way to remove them from your network. Conclusion Because Selfishnet V3 works by manipulating the ARP

From this dashboard, the user can manually enter speed limits (in KB/s) for any specific device or check a "Block" box to completely sever that device's connection to the gateway. How It Works: ARP Spoofing

Download and install the latest version of WinPcap on your Windows machine.

To cut off internet access entirely, click the checkbox in the column adjacent to that device. Summary of Use Cases vs. Alternatives Feature / Metric Selfishnet V3 Router QoS Settings Setup Complexity Very Low (Portable App) High (Requires Admin Login) Low (Installer Based) Permanence Temporary (Resets on close) Permanent (Saved to hardware) Semi-permanent Granular Controls Strict Download/Upload Caps Priority Tiers (High/Med/Low) Block / Unblock Only Resource Footprint Extremely Minimal None (Runs on Router) Important Security and Ethical Considerations

You don’t need the admin password for the router itself, as the software works at the device level. How to Install and Use SelfishNet V3

Click the icon (usually a red circle) next to a device to block it.