Angst is an active sniffer, based on libpcap and libnet. Angst provides methods for aggressive sniffing on switched local area network environments. It dumps the payload of all the TCP packets received on the specified ports. Moreover, it implements methods for active sniffing.
Angst currently provides two active sniffing methods. The first monitors ARP requests, and after enabling IP forwarding on the local host, sends ARP replies mapping all IPs to the local MAC address. The second method floods the local network with random MAC addresses, causing switches to send packets to all ports.