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SECURITY ISSUES IN MOBILE
AD-HOC NETWORK
Mukul A. Khairatkar
AGENDA

Introduction to MANET

Various Security Model

Operations

Introduction to IPSec

IPSec Operation

Simulation Details

Conclusion
MOBILE AD-HOC NETWORK
No Infrastructure No Server  Nothing
 Everybody acts like a Router
 Security Problem

Network Resources
 Source Spoofing
 Eavesdropping
 Data Transformation

SECURITY
Key Pre-Distribution Scheme
 Web of Trust
 Public Key Certification
 IPSec

SOME SECURITY TERMS

Public Key

Private Key

Digital Signature

Certificate


Digital Signature
Certificate Of Authority

Certificates

Public Key Infrastructure

X.509
KEY PRE-DISTRIBUTION SCHEME
Node 2
Key
Node 1
Key
Node 3
Key
Node 4
WEB OF TRUST
PGP
Public Key
Node 1
Public Key
Node 3
PGP
Node 2
PGP
PUBLIC KEY INFRASTRUCTURE

X.509

Certificate Authority CA

CA  CA Root Certificate

Root certificate

Distributed with Web Browser ..etc

SSL/TLS web pages
IPSEC

Why IPSec?

Open Standard Freely Available

Modular

Integrates in Existing IP structure

Transparent to application layer entities

For IPv6
SECURITY ARCHITECTURE
MODES

Transport Mode
Payload Encrypted
 IP header is Intact
 Routing is Intact


Tunnel Mode
New IP packet
 New Routing
 NW-NW Communication (tunnel)

IPSEC PACKET
NETWORK MODEL
IP TUNNEL
PERFORMANCE
FOR AD-HOC NETWORK
IPSEC FOR AD-HOC
IP Cloud
Subnet 1
Subnet 2
SECURITY
PROBLEMS

Latency Increases

Overhead Increases

Throughput Decreases

Complexity Increases
CONCLUSION

Ad-hoc Network uses various security methods

Do not violate existing protocol

IPSec is a new approach to secure IPv4 and IPv6
packets

Better approach can be used than IPSec
REFERENCES

[1] Trust- and Clustering-Based Authentication Services in Mobile Ad Hoc Networks, Edith C. H. Ngai and
Michael R. Lyu ,Department of Computer Science and Engineering ,The Chinese University of Hong Kong, IEEE
2004.

[2] Secure Ad Hoc Networking, Panagiotis Papadimitratos, Virginia Polytechnic Institute and State University,
IEEE 2006.

[3] Data Security in Ad hoc Networks Using MultiPath Routing, Souheila BOUAM. Jalel HEN-O rlIMAN
Laboratoirc CNRS-PRiSM. University of Versailles.

[4]Securing Ad-Hoc Networks by IPSEC, Abhrajit Ghosh, Telcordia Technologies Applied Research Piscataway,
NJ, IEEE paper 2004.

[5] Securing Ad Hoc Networks, Lidong Zhou and Zygmunt J. Haas Cornell University, IEEE 1999.

[6] C. Adams and S. Farrell “Internet X.509 Public Key Infrastructure Certificate Management Protocols”, RFC
2510, Mar 1999

[7] K. Young et. al. “Ad Hoc Mobility Protocol Suite for the MOSAIC ATD”, Milcom 2003.

[8] D. Boneh and M. Franklin “Identity based encryption from the Weil pairing”, SIAM J. of Computing, Vol. 32,
No. 3, pp. 586-615, 2003.