usbredir: A protocol for sending USB device traffic over a network connection

Usbredir is the name of a network protocol for sending USB device traffic over a network connection. Usbredir was created for use with Spice, which is why it is hosted on spice-space.org, but the protocol and the usbredirhost are completely independent of spice, they could for example also be used to create a vnc extension for redirecting USB devices over a vnc connection to a qemu virtual machine. Usbredir supports USB device filtering configurable by a filter string. You can then click on "Add Hardware" and add "USB Redirection" items as the number of USB devices you want to be able to redirect simultaneously. In remote-viewer, you can select which USB devices to redirect under the "File->USB device selection" menu once the Spice connection is established. Set a string specifying a filter to determine which USB devices, when plugged in, are allowed/blocked to auto-redirect USB traffic to the guest. Set a string specifying a filter to determine which USB devices are allowed/blocked to redirect USB traffic to the guest.