If you pay for the internet bill, you are the network administrator. Using SelfishNet to manage your children's screen time or prioritize your work computer is legal but potentially immoral.
SelfishNet uses ARP spoofing, which is illegal under the Computer Fraud and Abuse Act (CFAA) in the US and similar laws globally if used "without authorization." If you use it on a network you do not own (work, school, public library, neighbor's Wi-Fi), you are committing a cybercrime punishable by fines or imprisonment. selfishnet v3.0.0 windows
Many users deploy SelfishNet to stop bandwidth abuse. However, the cut-off user will notice symptoms of a failing router (timeouts, DNS errors). A technically savvy user can install an ARP firewall (like XArp) to detect and block you. If you pay for the internet bill, you
| Component | Requirement | | :--- | :--- | | | Windows 7, 8, 8.1, 10, or 11 (32-bit & 64-bit) | | Network | Wi-Fi (802.11 a/b/g/n/ac/ax) or Ethernet (NIC) | | Admin Rights | Yes (required for packet injection) | | RAM | 128 MB (min) | | Dependencies | WinPcap or Npcap (installed separately) | Many users deploy SelfishNet to stop bandwidth abuse
| Feature | SelfishNet v3.0.0 | NetCut 3.0 | SoftPerfect WiFi Guard | Router QoS | | :--- | :--- | :--- | :--- | :--- | | | ARP Spoofer | ARP Spoofer | Monitor only | Legit control | | Bandwidth limiting | Yes (Basic) | Yes (Advanced) | No | Yes | | Detection risk | High (ARP table) | High | N/A | None | | Requires admin | Yes | Yes | No | No (Router pass) | | Best for | Quick revenge | Detailed throttling | Security audits | Permanent solutions |
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?"
This article provides an exhaustive deep dive into SelfishNet V3.0.0, covering its features, installation, usage, ethical considerations, and alternatives. 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.
