Another interesting feature of the sniff function is that it has the "prn" attribute, which allows us to execute a function each time a packet is captured. It is very useful if we want to manipulate and re-inject data packets:
scapy> packetsICMP = sniff(iface="eth0",filter="ICMP", prn=lambda x:x.summary())
For example, if we want capture n packets for the TCP protocol,we can do that with the sniff method:
scapy> a = sniff(filter="TCP", count=n)
In this instruction, we are capturing 100 packets for the TCP protocol:
scapy> a = sniff(filter="TCP", count=100)
In the following example, we see how we can apply custom actions on captured packets.We define a customAction method that takes a packet as a parameter. ...
