The software utilizes (address resolution protocol manipulation). It essentially tricks other devices on the network into believing your computer is the router. This forces all outbound and inbound traffic through your machine first, allowing you to set hard caps on download and upload speeds or cut off access entirely. Top Features of Selfishnet v3

"The whole internet crashes when I start SelfishNet."

Control your internet bandwidth with SelfishNet v3. - GitHub

: Scans and lists all connected devices, including their IP and MAC addresses.

: It is highly effective at its core task. If a roommate or family member is downloading large files, applying a limit in SelfishNet results in an almost instant restoration of your ping and browsing speeds. The Downsides Security Software Flags : Because the tool uses ARP Spoofing

: It typically requires the .NET Framework to be installed on the host Windows machine to function correctly.

If you meant something else by — e.g., a specific CTF problem you’re solving — please provide the exact challenge prompt, and I can tailor the write-up exactly to that.