If you manage to get it running, the appeal is obvious. The interface is incredibly simple—perhaps too simple. It displays a list of all devices connected to your LAN (identified by IP and MAC address).

Conclusion: The "WORK" in the search query is doing a lot of heavy lifting. While it is a nostalgic and powerful tool for its time, Selfishnet is obsolete on Windows 11. The security risks of disabling driver signatures to run an unverified executable far outweigh the benefit of throttling a roommate's Netflix stream. Stick to router-side QoS management.

To download and run Selfishnet on Windows 11, you generally need two main components: the software itself and the WinPcap driver, which allows the program to interact with your network adapter. Installation Steps

Download WinPcap: Since Selfishnet relies on capturing network packets, you must first install the WinPcap driver.

Download Selfishnet: You can find various versions, such as the SelfishNetV3 release on GitHub, which is often updated for better compatibility.

Extract the Files: Use a tool like 7-Zip or WinRAR to extract the downloaded ZIP folder. Compatibility Settings:

Navigate to the extracted folder and find the executable file (usually SelfishNet.exe or similar). Right-click the file and select Properties.

Under the Compatibility tab, check the box for "Run this program as an administrator".

If you encounter errors, you may also need to check "Run this program in compatibility mode for" and select Windows 7. How to Use

Select Network Card: When you open the program, select your active network adapter (e.g., your Wi-Fi or Ethernet card) from the dropdown menu.

Scan: Click the Network Discovery button (usually a hand icon) to list all devices currently connected to your network. Control Traffic:

Block: Check the "Block" box for a specific device to cut its internet access entirely.

Limit: Enter values in the Download (KB/s) or Upload (KB/s) columns to restrict their speed.

Start/Stop: Click the Yellow Lightning Bolt to start applying your limits, and the Red Cross to stop.

Safety Note: Selfishnet is an older tool and may be flagged by antivirus software as a "Riskware" or "PUP" (Potentially Unwanted Program) because it manipulates network traffic. Always ensure you are downloading from a reputable source.

To download and use Selfishnet on Windows 11, you must install specific drivers and configure compatibility settings for it to function on newer operating systems. Selfishnet is a lightweight, portable tool used to monitor and manage network bandwidth by limiting or blocking internet access for other devices on your LAN using ARP Spoofing. 1. Essential Requirements

Selfishnet will not run out of the box on Windows 11. You need the following utilities:

WinPcap Drivers: Essential for the software to interact with your network adapter.

Net Framework 3.5 (includes 3.0): Required to run the legacy application components.

File Archiver: Such as WinRAR or 7-Zip to extract the portable program files. 2. Installation and Setup Guide

Since Selfishnet is portable, it does not have a traditional installer. Follow these steps to set it up:

Install WinPcap: Download and install the WinPcap drivers first.

Extract Selfishnet: Use your archiver to extract the Selfishnet ZIP/RAR file to a preferred folder. Configure Compatibility:

Open the extracted folder and navigate to the SelfishNet Win 7 & Up subfolder.

Right-click the SelfishNet Beta Vista application and select Properties.

In the Compatibility tab, check the box for "Run this program as an administrator" and click OK.

Enable .NET Framework: When you launch the app, Windows 11 may prompt you to download/install .NET Framework 3.5. Select "Download and install this feature". 3. How to Use Selfishnet

Select Adapter: Launch the app and choose your active Wi-Fi or Ethernet adapter from the initial drop-down menu.

Network Discovery: Click the Network Discovery button (usually a blue icon or "radar" symbol) to scan for all connected devices on your router.

Activate Control: Click the Lightning icon to start the redirection process. Manage Bandwidth:

Limit Speed: Type a value (in KB/s) in the Download Cap or Upload Cap columns for a specific device and press Enter.

Block Access: Check the box in the Block column to completely cut a device's internet. Important Considerations

Session-Based: Changes are not permanent. Settings revert to default as soon as you close the application or turn off your PC.

Security Risk: Because Selfishnet uses ARP Spoofing, some antivirus software may flag it as a threat. Only download from reputable sources.

Network Ethics: Using this tool on shared or public networks (like hostels or work) can be considered a violation of service terms and may expose your privacy to risks.

If you need to manage bandwidth for work (e.g., IT admin, small office, parental control), use these tools instead:

Selfishnet is a lightweight network utility originally designed for Linux, but it can run on Windows 11 using compatibility layers or specific builds. It allows users to view active devices on a local network and selectively limit their upload/download speeds.