This document discusses mobile ad hoc networks (MANETs). It defines MANETs as self-configuring networks that do not require a base station and use wireless connections. The document outlines the features of MANETs including autonomous operation, dynamic topology, and multi-hop routing. It then describes how MANETs work and the security challenges they face, such as replay attacks. Finally, it discusses advantages and applications of MANETs in areas like emergency response, military operations, and vehicle-to-vehicle communication.

2. Table of ConTenTs
1. Computer Network and its type
2. Ad-hoc Network and MANET
3. Features of MANET
4. Working of MANET
5. Security and its challenges in MANET
6. Advantages and Application of MANET

3. Types of Network

5. MobIle aD HoC neTWoRK
Ad hoc is a Latin phrase which means "for this purpose “
A MANET is a type of Ad-hoc network.
Does not require base station.
Mobile Ad hoc Networks are self configuring networks.
Use wireless connections to connect to various networks.
Typical “peer-to-peer” rather than “client-server”.

6. 1.Autonomous terminal
2.Operating without a central coordinator
3.Dynamic network topology
4.Distributed Operation
5.Multi-hop routing

7. Working of MANET
May need to traverse multiple links to reach destination
Internet
C
B D
E
E
A
Gateway
F
After one of the nodes is configured as a gateway, the
Stand-alone MANET
entire network is connected to an external network like
Internet

8. Challenges in Securing MANETs
Initial
Routing
before
attack

9. Challenges in Securing MANETs
Data Packets
Initial
Routing
before
attack

10. Challenges in Securing MANETs
•Data packets received in
one place of the network
and replay them in
another place
•Attacker can attack the
Routing Algorithm

11. Challenges in Securing MANETs
Most packets will be
routed to the Attacker
The Attacker can
drop packets or
forward packets to
avoid detection

12. Advantages of MANET
This can be developed where there is less
telecommunication infrastructure
Cost Estimation is very less
These networks can be set up at any place and time.
MANET is Multi-hop network with Autonomous Terminal
and dynamic network topology.
MANET can be used as Temporary Network
It requires less time

13. Personal area networking
Military environments
Disaster Area such as War-Zone and Natural Calamity
Civilian environments
Emergency operations
VANE (Vehicular ad hoc Network)
T

14. T H a n
K