CSCE 790: Computer Network Security
... prevent address spoofing attacks guard against replay attacks by tracking sequence numbers HMAC-MD5-96 or HMAC-SHA-1-96 MAC is calculated over IP header fields that are either immutable or predictable, AH header other than authentication data, and entire upper-level protocol data ...
... prevent address spoofing attacks guard against replay attacks by tracking sequence numbers HMAC-MD5-96 or HMAC-SHA-1-96 MAC is calculated over IP header fields that are either immutable or predictable, AH header other than authentication data, and entire upper-level protocol data ...
PPT Version
... confining EAP for configuration to network access keys only – Now, IP address information is configured also – What else will drive through that hole? ...
... confining EAP for configuration to network access keys only – Now, IP address information is configured also – What else will drive through that hole? ...
Lecture3
... – Negotiate protocol version, encryption algorithm, key generation method – Can authenticate each other using public key algorithm – Client & server establish a shared secret – Multiple secure connections can be set up after session setup ...
... – Negotiate protocol version, encryption algorithm, key generation method – Can authenticate each other using public key algorithm – Client & server establish a shared secret – Multiple secure connections can be set up after session setup ...
Chapter 13
... Network Access Control (NAC) is a method of securing network hosts before they’re allowed to access the network. NAC is commonly used in implementations in wireless networking, where nodes are often added to and removed from the network freely. IEEE 802.1x is one of the most common forms of NAC ...
... Network Access Control (NAC) is a method of securing network hosts before they’re allowed to access the network. NAC is commonly used in implementations in wireless networking, where nodes are often added to and removed from the network freely. IEEE 802.1x is one of the most common forms of NAC ...
WiFi Security: WEP, WPA, and WPA2
... different functions (encryption, integrity) use different keys derived from the session key using a one-way function integrity protection is improved encryption function is improved ...
... different functions (encryption, integrity) use different keys derived from the session key using a one-way function integrity protection is improved encryption function is improved ...
Chapter 12 Outline
... b) The 802.11i standard specifies the use of the Temporal Key Integrity Protocol (TKIP) and the Counter Mode with CBC-MAC Protocol (in full, the Counter Mode with Cipher Block Chaining–Message Authentication Codes Protocol, or simply CCMP). (1) TKIP works by using a shared secret combined with the ...
... b) The 802.11i standard specifies the use of the Temporal Key Integrity Protocol (TKIP) and the Counter Mode with CBC-MAC Protocol (in full, the Counter Mode with Cipher Block Chaining–Message Authentication Codes Protocol, or simply CCMP). (1) TKIP works by using a shared secret combined with the ...
Document
... Replaces the aging Data Encryption Standard (DES) in NIST. Solves the problem of stronger encryption needed by 802.11. AES requires a coprocessor (additional hardware). Companies need to replace existing access points and client NICs. 802.11i standard will likely include AES. Network Architecture an ...
... Replaces the aging Data Encryption Standard (DES) in NIST. Solves the problem of stronger encryption needed by 802.11. AES requires a coprocessor (additional hardware). Companies need to replace existing access points and client NICs. 802.11i standard will likely include AES. Network Architecture an ...
What is a VPN
... validations, and enables data encryption, which makes it much safer to send information over nonsecure networks by using the new Internet Protocol security (IPSec) In this case data transfer through a L2TP-enabled VPN is as secure as within a single LAN at a corporate site ...
... validations, and enables data encryption, which makes it much safer to send information over nonsecure networks by using the new Internet Protocol security (IPSec) In this case data transfer through a L2TP-enabled VPN is as secure as within a single LAN at a corporate site ...
What is a VPN
... validations, and enables data encryption, which makes it much safer to send information over nonsecure networks by using the new Internet Protocol security (IPSec) In this case data transfer through a L2TP-enabled VPN is as secure as within a single LAN at a corporate site ...
... validations, and enables data encryption, which makes it much safer to send information over nonsecure networks by using the new Internet Protocol security (IPSec) In this case data transfer through a L2TP-enabled VPN is as secure as within a single LAN at a corporate site ...
Wireshark Primer
... Uses the same 4-way handshake PTK derivation as TKIP Based on AES (Advanced Encryption Standard) cipher, not RC4 AES provides for strong encryption Can not be used with legacy hardware ...
... Uses the same 4-way handshake PTK derivation as TKIP Based on AES (Advanced Encryption Standard) cipher, not RC4 AES provides for strong encryption Can not be used with legacy hardware ...
Top-Down Network Design
... credentials from the user, which could be a user ID and password • The credentials are passed by the authenticator to the server and a session key is developed • Periodically the client must reauthenticate to ...
... credentials from the user, which could be a user ID and password • The credentials are passed by the authenticator to the server and a session key is developed • Periodically the client must reauthenticate to ...
WLAN and IEEE 802.11 Security
... Your 802.11 Wireless Network Has No Clothes(Arbaugh, Shankar, and Wan 2001) Weaknesses in the Key Scheduling Algorithm of RC4(Fluhrer, Mantin, and ...
... Your 802.11 Wireless Network Has No Clothes(Arbaugh, Shankar, and Wan 2001) Weaknesses in the Key Scheduling Algorithm of RC4(Fluhrer, Mantin, and ...
Top-Down Network Design
... credentials from the user, which could be a user ID and password • The credentials are passed by the authenticator to the server and a session key is developed • Periodically the client must reauthenticate to ...
... credentials from the user, which could be a user ID and password • The credentials are passed by the authenticator to the server and a session key is developed • Periodically the client must reauthenticate to ...
Web Security
... – Rqts: The value SHOULD be unpredictable and unique over the lifetime of a shared secret • Repetition of a request value in conjunction with the same secret would permit an attacker to reply with a previously intercepted ...
... – Rqts: The value SHOULD be unpredictable and unique over the lifetime of a shared secret • Repetition of a request value in conjunction with the same secret would permit an attacker to reply with a previously intercepted ...
Diapositiva 1 - International Centre for Theoretical Physics
... network until the user performs a network logon. When the user enters a username and password into a network logon dialog box or its equivalent, the client and a RADIUS server perform a mutual authentication, with the client authenticated by the supplied username and password. The RADIUS server and ...
... network until the user performs a network logon. When the user enters a username and password into a network logon dialog box or its equivalent, the client and a RADIUS server perform a mutual authentication, with the client authenticated by the supplied username and password. The RADIUS server and ...
PPP
... The user who wants to access a system sends an ID (identification) and a password. The system checks the validity of the identification and password and either accepts or denies a connection. For those systems that require greater security, PAP is not enough. A third party with access to the link ca ...
... The user who wants to access a system sends an ID (identification) and a password. The system checks the validity of the identification and password and either accepts or denies a connection. For those systems that require greater security, PAP is not enough. A third party with access to the link ca ...
man-in-the-middle - Personal.kent.edu
... • No Limit on using the same IV Value more than once.This makes the encryption vulnerable to collisionbased attacks. • Problem #2 • The IV is only 24 bits, there are only 16.7 million possible variations. ...
... • No Limit on using the same IV Value more than once.This makes the encryption vulnerable to collisionbased attacks. • Problem #2 • The IV is only 24 bits, there are only 16.7 million possible variations. ...
Document
... 3. If successful, access point will accept traffic from client, encryption keys derived for the session 4. When client logs off, the access point will disable the client's ports ...
... 3. If successful, access point will accept traffic from client, encryption keys derived for the session 4. When client logs off, the access point will disable the client's ports ...
Implementation of Extensible Authentication Protocol in OPNET
... studies on authentication and key exchange methods for 802.11 wireless LAN,” in computers and security, Pages 401-9, 2007. [14] W. Simpson. RFC 1994 “PPP Challenge Handshake ...
... studies on authentication and key exchange methods for 802.11 wireless LAN,” in computers and security, Pages 401-9, 2007. [14] W. Simpson. RFC 1994 “PPP Challenge Handshake ...
motorola-review-Feb0.. - Computer Science Division
... The Current Threat Landscape and Countermeasures of WiMAX Networks • WiMAX: next wireless phenomenon ...
... The Current Threat Landscape and Countermeasures of WiMAX Networks • WiMAX: next wireless phenomenon ...