These are the different implementations of the LAN traffic filtering driver that comes with NetWorx:
- TDI is a driver that works anywhere from Windows XP to Windows 10, but doesn't monitor so-called UWP apps on Windows 8 and above.
- WFP is a driver that works on Windows 7 and above and monitors everything, but has compatibility issues on systems before Windows 10.
Generally WFP is a more reliable and standard way to filter traffic, but in practice due to installed third party software products (antivirus, firewall, etc) either driver may fail to work correctly.
So the short answer is:
- If you need to exclude local traffic from NetWorx records, stick to TDI on Windows XP/7 and WFP on Windows 8/10.
- If you are using Windows 7 and are having a problem with the TDI driver, try installing WFP instead.
- If you don't need to exclude local traffic or you simply don't have it, then don't install any of these drivers at all.