Seek Digital Library
The use of wireless links makes a Mobile Ad-hoc NETwork(MANET) susceptible to malicious attacks, ranging from passive eavesdropping to active interference. In wired networks an attacker has to pass through a set of firewalls and gateways to access the network. Whereas MANETS does not have firewalls or gateways so attacks can take place from all directions. Every node in a MANET is an autonomous unit in itself and frees to move independently. So any node without adequate protection is very much prone to be captured or compromised.