Selfishnet V3.0.0 Windows May 2026
Once the network scan is complete, you will see a table with columns: IP Address, MAC Address, Hostname, and Status.
To understand SelfishNet V3.0.0, you must understand ARP (Address Resolution Protocol) .
In a standard Wi-Fi or Ethernet network, your router keeps a table linking IP addresses (like 192.168.1.5) to physical MAC addresses. When a device wants to send data to the internet, it asks the router, "Where is the gateway?"
SelfishNet exploits this by sending forged ARP replies to the router and to other devices. Essentially, it tells the router: "I am everyone on the network. Send all traffic to me." Simultaneously, it tells the other computers: "I am the router. Send all your traffic to me."
Once this "Man in the Middle" (MITM) position is established, SelfishNet V3.0.0 can do one of three things:
Because the software v3.0.0 optimizes the timing of these ARP requests, it is significantly harder to crash the network than older versions.
Selfishnet operates by utilizing a technique known as ARP (Address Resolution Protocol) Spoofing.
If SelfishNet is too aggressive, detected, or unreliable for your needs, consider:
| Tool | Platform | Purpose | |------|----------|---------| | NetCut | Windows | Simpler ARP spoofing with on/off cut-off feature. | | Wireshark | Windows/Linux | Passive monitoring only (no spoofing). Legal and safe. | | Ettercap | Windows/Linux | Professional-grade MitM framework. More control but steeper learning curve. | | BetterCAP | Windows/Linux/macOS | Modern, modular replacement for Ettercap. Supports SSL stripping. | | Cain & Abel | Windows (legacy) | Older but feature-rich sniffer. Less compatible with Windows 11. |
For legitimate bandwidth management, use router QoS settings or a dedicated traffic shaper like NetLimiter (per-application control without network attacks).
Imagine you are in a coffee shop or shared apartment where three other people are streaming video, causing lag for your work call.
SelfishNet cannot inject packets without a packet capture driver.
Summary
What it does well
Limitations and risks
Usability
Alternatives (higher-level)
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SelfishNet v3.0.0 is a specialized network utility for Windows designed to give you complete control over your local network's bandwidth distribution. By leveraging techniques like ARP spoofing, it allows users to monitor connected devices and limit or entirely block their internet access to ensure a smoother experience for their own machine. Key Features of SelfishNet v3.0.0
SelfishNet is primarily used in environments with shared Wi-Fi where one user may be hogging bandwidth through heavy downloads or streaming.
Real-time Network Discovery: Instantly see a list of all devices (PCs, smartphones, consoles) currently connected to your network, along with their IP and MAC addresses.
Bandwidth Limiting: Assign specific download and upload speed limits to any device on the network to prevent lag in your own tasks.
Device Blocking: Use the "Block" feature to completely sever the internet connection of a specific device without physically touching it.
Lightweight and Portable: The software is typically distributed as a portable application, meaning it does not require a traditional installation process to run. How SelfishNet Works: The Technical Side selfishnet v3.0.0 windows
SelfishNet operates using ARP (Address Resolution Protocol) Spoofing.
The "Shout": Normally, your router manages traffic by telling devices where to send data.
The Spoof: SelfishNet sends "fake" ARP messages to other devices on the LAN, convincing them that your computer is the gateway (the router).
Control: Once devices start sending their traffic through your computer, SelfishNet can choose to pass that traffic along at a slower speed or drop it entirely. Installation & Setup for Windows
To run SelfishNet v3.0.0 on modern versions like Windows 10 or 11, specific dependencies and permissions are required:
Install WinPcap: This is the most critical requirement. SelfishNet relies on the WinPcap library to capture and send network packets.
Download and Extract: Obtain the latest version (such as v3.0.1) from GitHub or reputable software mirrors.
Administrator Privileges: Because it interacts directly with network protocols, you must right-click the executable and select "Run as Administrator".
Compatibility Mode: If you encounter issues on Windows 10/11, right-click the file, go to Properties > Compatibility, and set it to run in "Windows 7" or "Vista" mode. Security and Ethics Warning
While SelfishNet is a powerful tool for managing your own network, it comes with risks:
Safety: Many versions of SelfishNet found on unofficial sites may contain malware. It is highly recommended to download only from official repositories like GitHub.
Ethics: Using this tool on a public or shared network without permission is often considered unethical and may violate the terms of service of your ISP or workplace. Once the network scan is complete, you will
Detection: Modern routers with "ARP Inspection" or "Source Guard" features can detect and block SelfishNet's spoofing attempts. Releases · abelmez/SelfishNet - GitHub
SelfishNet v3.0.0 on Windows, you likely need to install the .NET Framework 3.0
(or 3.5), which the application often refers to as a "required feature" to run correctly. Steps to Enable the Required Feature
If you are prompted by Windows that "an app on your PC needs the following feature," follow these steps: Direct Download : When the pop-up appears, click "Download and install this feature"
. Windows will automatically fetch the necessary files from Windows Update. Manual Activation Control Panel Programs and Features "Turn Windows features on or off" on the left sidebar. .NET Framework 3.5 (includes .NET 2.0 and 3.0) in the list. Check the box, click , and restart your computer if prompted. Essential Dependencies
SelfishNet cannot function without the following drivers and permissions:
: This driver is mandatory for the software to capture network packets. Ensure you download and install the WinPcap driver before launching the app. Administrator Privileges : You must right-click the SelfishNet.exe file, select Properties , go to the Compatibility tab, and check "Run this program as an administrator" Compatibility Mode
: If you are on Windows 10 or 11, setting the compatibility mode to Windows Vista in the properties menu can help resolve startup crashes. Core Functionality Once the features are active, you can use the software to: Discover Devices
: Click the "Network Discovery" button (network icon) to find all devices on your current Wi-Fi or Ethernet network. Limit Bandwidth
: Manually enter "Download" and "Upload" limits for specific IP addresses and click the "Start" button (lightning bolt icon) to apply them. Block Access
: Check the "Block" box next to a device to completely cut its internet connection. Are you encountering a specific error message when trying to install this feature?
SelfishNet is a freeware network traffic shaper designed specifically for Windows operating systems. Unlike complex enterprise-level Quality of Service (QoS) tools, SelfishNet focuses on a single, brutalist mission: to give your device absolute priority over the local network while limiting or cutting off everyone else. Because the software v3
Version 3.0.0 represents a significant milestone in the software's development. It patches previous bugs, improves compatibility with modern network adapters, and introduces a more intuitive user interface. The "V3.0.0" moniker signals a move away from the clunky, early-2010s aesthetic toward a more stable Windows 10/11-compatible application.