Dell AP-134, AP-135, W-AP135, W-AP134 manual WPA2-PSK

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Authentication

Mechanism Strength

Mechanism

 

 

 

Wireless Client

For WPA2-PSK there are at least 95^16 (=4.4 x 10^31) possible

WPA2-PSK

combinations. In order to test a guessed key, the attacker must complete the

(Wireless Client

4-way handshake with the AP. Prior to completing the 4-way handshake, the

role)

attacker must complete the 802.11 association process. That process involves

 

 

the following packet exchange:

 

∙ Attacker sends Authentication request (at least 34 bytes)

 

∙ AP sends Authentication response (at least 34 bytes)

 

∙ Attacker sends Associate Request (at least 36 bytes)

 

∙ AP sends Associate Response (at least 36 bytes)

 

Total bytes sent: at least 140. Note that since we do not include the actual 4-

 

way handshake, this is less than half the bytes that would actually be sent, so

 

the numbers we derive will absolutely bound the answer.

 

The theoretical bandwidth limit for IEEE 802.11n is 300Mbit, which is

 

37,500,000 bytes/sec. In the real world, actual throughput is significantly less

 

than this, but we will use this idealized number to ensure that our estimate is

 

very conservative.

 

This means that the maximum number of associations (assume no delays, no

 

inter-frame gaps) that could be completed is less than 37,500,000/214 =

 

267,857 per second, or 16,071,429 associations per minute. This means that

 

an attacker could certainly not try more than this many keys per second (it

 

would actually be MUCH less, due to the added overhead of the 4-way

 

handshake in each case), and the probability of a successful attack in any 60

 

second interval MUST be less than 16,071,429/ (4.4 x 10^31), or roughly 1 in

 

10^25, which is much less than 1 in 10^5.

 

 

Mesh AP WPA2

Same as Wireless Client WPA2-PSK above

PSK (User role)

 

 

 

RSA Certificate

The module supports RSA 1024 bit keys and 2048-bit RSA keys. RSA 1024

based authentication

bit keys correspond to 80 bits of security. The probability of a successful

(CO role)

random attempt is 1/ (2^80), which is less than 1/1,000,000. The probability

 

of a success with multiple consecutive attempts in a one-minute period is less

 

than 1/100,000.

 

 

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Contents Fips 140-2 Non-Proprietary Security Policy Page Aruba Dell Relationship Acronyms and Abbreviations Security Levels Physical SecurityModes of Operation Operational Environment Logical InterfacesServices Introduction Aruba Dell RelationshipAcronyms and Abbreviations CPSecSHA Product Overview AP-134Physical Description Aruba Part Number Dell Corresponding Part NumberAP-134 Indicator LEDs Label Function Action Status PWRENET0 ENET1AP-135 AP-135 Indicator LEDs Label Function Action Status Module Objectives Security LevelsPhysical Security Applying TELs2 AP-134 TEL Placement AP-134 Front view3 AP-135 TEL Placement AP-134 Top ViewAP-135 Front view Inspection/Testing of Physical Security Mechanisms AP-135 Top viewConfiguring Remote AP Fips Mode Modes of OperationEnable Fips mode on the AP. This accomplished by going to Configuring Remote Mesh Portal Fips Mode Configuring Remote Mesh Point Fips Mode Verify that the module is in Fips mode Operational EnvironmentLogical Interfaces Fips 140-2 Logical Interface Module Physical InterfaceRoles, Authentication and Services Crypto Officer AuthenticationRoles User Authentication Wireless Client AuthenticationStrength of Authentication Mechanisms Authentication Mechanism StrengthWPA2-PSK Services Crypto Officer ServicesWPA2 PSK KEKUser Services PMKPTK Eapol MICWireless Client Services Unauthenticated Services∙ FTP ∙ Tftp ∙ NTP Cryptographic Algorithms Non-FIPS Approved AlgorithmsCritical Security Parameters HmacRNG PSK AES-CCMGMK GTKSelf Tests For an AES Atheros hardware Post failure
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