Certain embodiments described herein are generally directed to a method for managing packets at a virtual forwarding element of a hypervisor. In one example, the method includes receiving a first plurality of packets at a virtual port of the virtual forwarding element. The method further includes detecting the first plurality of packets correspond to a signature configured at the virtual port. The method also includes dropping at least one packet of the first plurality of packets at the virtual port based on detecting the first plurality corresponds to the signature. The method further includes receiving a second plurality of packets at the virtual port of the virtual forwarding element, wherein the second plurality of packets do not correspond to the signature. The method also includes forwarding the second plurality of packets to one or more destinations by the virtual forwarding element.