This document discusses wireless network security. It describes different types of wireless networks like WWAN, WLAN, and WPAN. It then discusses wireless devices, standards, threats, and security requirements. It provides details on IEEE 802.11 architecture and security features. Some key security risks are loss of confidentiality, integrity, and availability. The document outlines technical countermeasures like software solutions, personal firewalls, intrusion detection systems, and encryption to enhance security. Hardware solutions like smart cards, VPNs, PKI, and biometrics are also discussed. The conclusion identifies open issues in managing security relationships in public wireless networks.

1. Presented by
Mr. Nileshkumar R. Jaiswar

2. Wireless Network Security
Introduction
Wirelesstechnologies, in thesimplest sense, enableoneor more
devicesto communicatewithout physical connections
Wireless Networks
WirelessWideAreaNetworks(WWAN), WLANs, and
WirelessPersonal AreaNetworks(WPAN). WWAN includeswide
coverageareatechnologiessuch as2G cellular, Cellular Digital Packet
Data(CDPD), Global System for MobileCommunications(GSM).
WLAN, representing wirelesslocal areanetworks, includes802.11
and several others.

3. Wireless Devices
 Personal Digital Assistants(PDA)
 Smart Phones
 Laptops
WirelessStandards
 IEEE 802.11 (bandwidth up to 2 Mbps)
 IEEE 802.11b (bandwidth up to 11 Mbps)
 IEEE 802.11a (bandwidth up to 54 Mbps)
 IEEE 802.11g (bandwidth up to 54 Mbps)
 IEEE 802.11n (support dataratesof over 100 Mbps)

4. Wireless Security Threats
Potential threatsin wirelessnetworksaredevicetheft, denial of
service, malicioushackers, maliciouscode, theft of service, and
industrial and foreign espionage.
Security requirements
 Authenticity
 Non repudiation
 Accountability

5. IEEE 802.11 Architecture

6. Security of 802.11 Wireless LANs

7. Security Features of 802.11
Wireless LANs per the Standard
1. Authentication
2. Confidentiality orprivacy

8. Authentication

9. Shared-key Authentication

10. Privacy

11. Security Requirements and Threats
Passive Attack
* Eavesdropping
* Traffic analysis
Active Attack
* Masquerading
* Replay
* Message modification
* Denial-of-service

12. 1.Loss of Confidentiality
2.Loss of Integrity
3.Loss of Network Availability
4.OtherSecurity Risks
5.Risk Mitigation

13. Technical Countermeasures
Software Solutions
Access Point Configuration
* Updating default passwords
* Establishing proper encryption settings
* Controlling thereset function
* Using MAC ACL functionality
* Disablebroadcast SSID feature
* Changing default channel.
* Using DHCP.

14. Personal Firewalls
Resources on public wireless networks have a higher
risk of attack since they generally do not have the
same degree of protection as internal resources.
Personal firewalls offersome protection against
certain attacks. Personal firewalls are software-based
solutions that reside on a client's machine
Intrusion Detection System (IDS)
An intrusion detection system is an effective tool for
determining whetherunauthorized users are
attempting to access, have already accessed, orhave
compromised the network.

15. Encryption
Generally have only two encryption settings
available: 40-bit shared key, and 104-bit setting.
Security Assessments
Security assessments, or audits, arean essential tool for
checking thesecurity postureof aWLAN and for
determining correctiveaction to makesureit remains
secure.

16. Hardware Solutions
Hardware countermeasures formitigating
WLAN risks include implementing smart
cards, VPNs, PKI, biometrics, and other
hardware solutions.
Smart Cards
Smart cards may add anotherlevel of
protection, although they also add another
layerof complexity. Agencies can use smart
cards in conjunction with username or
password

17. Public Key Infrastructure (PKI)
PKI providestheframework and servicesfor thegeneration,
production, distribution, control, and accounting of public key
certificates. It providesapplicationswith secureencryption and
authentication of network.
Biometrics
Biometric devicesincludefingerprint/palm-print scanners,
optical scanners(including retinaand irisscanners), facial
recognition scanners, and voicerecognition scanners.
Biometricsprovidean added layer of protection.

18. Advantages :-
Convenience
Mobility
Expandability
Cost
Disadvantages:-
Security
Range
Reliability
Speed

19. Conclusion
In this case study, we have reviewed wireless
network security issues in trust, management,
interoperation and measurement and have identified
a numberof open Critical issues in management of
security relationships in public access networks
include
1.multi-provider authentication
2.protection of incentiveinformation and lightweight key
distribution schemes
3.compromised nodedefensethrough redundancy and
consistency checking and moreefficient public-key schemes.

20. Reference
http://www.bwif.org/
http://ipoint-tech.com/
http://en.wikipedia.org/wiki/Wi-Fi
http://www.webopedia.com/TERM/W/Wi_Fi.html

21. Thank
You