10.2.2.1.11. ICMP Based Attack / Smurf Attack

One of the ICMP-based attack types is the Smurf attack. The name Smurf comes from the original exploit tool source code smurf.c, created in 1997 by a person named TFreak. In a Smurf attack, an attacker broadcasts a large number of ICMP packets with the victim's spoofed source IP to a network using a network IP broadcast address. This causes devices on the network to respond by sending a reply to the source IP address.

interface vlan 444

No ip directed-broadcast 

range gigabitEthernet 0/0 – 48

No ip directed-broadcast