Security for Multihop Wireless Networks

Taxonomy and Holistic Detection of Security Attacks in MANETs  ◾  13

◾ Delay: Detecting delay-related attacks can be performed using a main cir-

cumstance: verifying the existence of duplicated packets in the network with

a substantial temporal lag between them. However, how does one determine

this temporal lag? For that, we can monitor and trace every packet around the

network to detect its subsequent retransmissions.

A more plausible option, however, is to use timestamps in communications

to facilitate verifying the accomplishment of the implemented protocols and

services.

◾ Dropping: Malicious packet discarding can be detected using some facts,

including a deficient rate in packet retransmissions by a node (i.e., forwarded

packets versus ...