The Ignore local traffic within the LAN option enables NetWorx to take into account only your Internet traffic, excluding all local communications.
This feature requires a network driver that comes with the installation package. It is not available in the portable edition.
Okay, I've chosen the adapter, the option is still disabled and grayed out, but I assume it still works. Now I've launched netstat and it shows me download and upload speed per connection. The new problem is, it doesn't update it, even if I click "refresh". How can I solve this problem?
UPDATE: Nevermind, I see now, how it works. Thanks for help.