I am currently trying to sniff some USB traffic from a USB flash drive to a virtual (Ubuntu) machine. But I am confronted with a few understanding problems. Given the following packet (contains every field I am unsure about):
1 0.000000000 host 1.0 USBHUB 64 GET_STATUS Request [Port 1]
Frame 1: 64 bytes on wire (512 bits), 64 bytes captured (512 bits) on interface 0
Endpoint: 0x80, Direction: IN
So my questions are:
Is the port (indicated with "[Port 1]") the physical port on my machine? And if so: Are they numbered beginning with 0? (So if I have 4 ports, the first one would be 0 and the last one would be 3)
What is the interface then...?
The endpoints are just the indication of the (in case of the mass storage I connected) direction of the access (in this case "IN" -> from host to USB device)
Thanks a lot for your help!
I think I got the thing with the endpoints and interfaces now (please correct me, if I am wrong):
An interface is the logical grouping of several endpoints with the same features.
asked 19 Aug '14, 12:13
accept rate: 0%