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1、Security in 802.16,Overview,Typical threats of any wireless networks Wireless security-802.16 WiMAXs prospect,Typical threats of any wireless networks,Malicious entities can gain access to the network , information can be intercepted , DoS attacks , the miscreants can masquerade as legitimate users,
2、 Viruses and other malicious code 。,Malicious User,Typical threats of any wireless networks Wireless security-802.16 WiMAXs prospect,Advantages of -802.16,ranges up to 50Kms, no LOS required ,and data transfer rates up to 70 Mbps.,Network Entry of a SS,scans downlink signal , establishes a PMC with
3、BS , PKM authorizes the SS to the BS , BS upon a request message registers the SS , BS sends a response for a secondary management connection, SS and BS create transport connections .,Searching BS,Security architecture,1,Encapsulation protocol encrypting the data packets. 2,Key Management Protocol s
4、ecure distribution of the keying data from BS to SS.,Authorization SA,X.509 certificate Authorization key(AK), lifetime of AK, the Key encryption key (KEK),SS,BS,Auth Info,Auth reply(AK0),Auth Req,Auth Req,Auth Req,Auth Reply(AK1),Auth Reply,AK0ALT,AK1ALT,AK0 ALT,AK1 ALT,AK2ALT,AK2ALT,AK Usage,Key R
5、eq(AK1),Key Req(AK2),State Machine(SS),Wireless security-802.16 compare with security in 802.11 WiMAXs prospect,WiMAX Forum,over 250 members: France Telecom, Deutsche Telecom, Telenor, British Telecom, UK Broadband, Altitude Telecom, China motion telecom etc. Intel,Alcatel, Siemens, Ericsson, Nokia etc. 1000s of deployments in over 130 countries,Thank You!,