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CCNP Wireless Security

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Answer 50 questions in 15 minutes.
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Match each statement with the correct term.
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This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.

1. Enhanced Neighbor list - E2E
1. client begins in Quarenteen vlan & NAA sends posture assesment to NAS 2. assesment is verified against policies in NAM 3. If in compliance - client is moved to access vlan. If not - NAS sends remediation info to client 4 NAA guides user through re
1. v2 - LEAP 2. v3 - EAP-FAST 3. v4 - PEAP & EAP-TLS
1. application type 2. security capabilities 3. QoS policy
Allows intel clients to request a neighbor list at will.

2. Difference between MFP-1 & MFP-2
Controll is (mgmnt) not data. To encrypt data: check data encryption under advanced tab of ap config
MFP-1 protects infrastructure from management frame attacks (ie aps only). MFP-2 Protects both infrastructure & clients
1. disassociation 2. deauthentication 3.QoS (WMM)
Clients send info re: previously associated aps to current ap - so it can use this information to inform current clients about neighboring aps. Requires CCXv2

3. Whats added in CCXv5?
1. RSSI 2. SNR 3. Load-Ballancing
after .1x authentication user is forwarded to a splash page. This is done via RADIUS attribute
1 AP per 15 -000 sq. feet.
mfp-v2

4. What kind of local 802.1x auth. does HREAP support
1. LEAP 2. EAP-FAST
Controll is (mgmnt) not data. To encrypt data: check data encryption under advanced tab of ap config
US: 1. HIPAA 2. GLBA 3. FFIEC 4. SOX 5. FIPS 6. NIAP Canada: 1. PIPEDA Japan: 1. JPIPA
1. Integrated -- wIPS monitor mode aps are part of client-serving infrastructure 2. Overlay -- wIPS aps - WCS & WLCs are totally seperate

5. 802.11R
specifies fast bss transitions by allowing negotiations and requests for wireless resources to occur simultaneously. Does this by allowing for part of the key to be cached (server key) among the network - so full 802.1x auth. isnt required
Clients download a key for their wlan - after auth - so they can understand that IE in the mgmt frame
1. Scanning - for other aps in the area 2. exchanging 802.11 auth messages (first from client then from ap) w/ the target ap 3. exchanging re-association messages with target ap 4. dot1x master key (PMK) negotiation 5. key derivation - 4way handshake
uses certificates

6. Ports to open on fw to allow foreign to anchor controller tunnel to be built
1. udp 16666 for control traffic 2. IP Protocol 97 (EoIP) for client data traffic
1 AP per 15 -000 sq. feet.
Corrospond to top-menu GUI items (wireless - security - monitor etc)
what occurs as a client roams to new ap -WLC forwards cached PMK to AP. Client then forms a Pairwise Transient Key (PTK) via 4-way handshake w/ ap.

7. What CCX version is required for CCKM
1. VLAN Mapping 2. WLAN Ordering 3. WLAN Configuration
1. v2 - LEAP 2. v3 - EAP-FAST 3. v4 - PEAP & EAP-TLS
Proactive Key Caching (PKC) or CCKM
AES-Key Wrap

8. How to add IPS TLS info to WLC
1. Scanning - for other aps in the area 2. exchanging 802.11 auth messages (first from client then from ap) w/ the target ap 3. exchanging re-association messages with target ap 4. dot1x master key (PMK) negotiation 5. key derivation - 4way handshake
300ms
WLC sends a roam-request to a client when it can better serve that client on a different AP. Client can accept or ignore. CCXv4+
Security --> Advanced --> CIDS --> Sensors

9. What is 802.11w?
on the WLC -1. Configure an Access vlan & check the quarentine vlan - giving it the quarentine vlan tag 2. on wired net connect the Quarenteen vlan to the untrusted NAS interface. 3. Connect the access vlan to the trusted int. on the nas 4. config sn
AES-Key Wrap
x509 cert to establish DTLS capwap control tunnel. It can be either 1. LSC 2. MIC (Mafctr installed cert) or 3. SSC
MFP

10. Will foreign/anchor communication work through PAT?
1. NAC Guest Server (NGS) - Like a RADIUS server when people can create guest accounts 2. Nac Manager (NAM) - Centrilized server for creating policies & profiles that determine network access. 3. Network Access Server (NAS) - The device which control
1. Guest User 2. Sponsor 3. Network Enforcement Device (ie wlc) 4. NGS Server itself
no
Check Shell(exec) then define roles as role1=MANAGEMENT role2=WLAN role3...etc

11. What is a mobility list used for
-150ms
when you want some wlcs to be part of the same mobility group - but not others.
what must you ensure -1.Exportable 2.Server Auth Cert 3.Store cert in local cert store
1. Integrated -- wIPS monitor mode aps are part of client-serving infrastructure 2. Overlay -- wIPS aps - WCS & WLCs are totally seperate

12. Steps to configure wlcs for guest wlan
1. PMK is only valid for 1 hour -- CCKM creates a main key & derives secondary keys. These secondary keys are sent to all wlc/aps.
1. config mobility list to support anchor & foreign wlcs (using different mob. groups on ea. to keep auth. seperate between anchor & foreigns) 2. Map the guest wlan on foreign wlc to either mgmt int. or fake dynamic int. (ie dynamic int tied to a vla
1. HMAC-MD5 2. HMAC-SHA
when you want some wlcs to be part of the same mobility group - but not others.

13. How does infrastructure MFP work
WLC generates a Message Integrity Check Information Element (MIC IE) - which includes a sequence # - and aps add it to each mgmt frame. Clients ignore this IE - as they do not understand it.
1. Log into cert. server - from ACS -and click link to install it locally 2. Log into ACS and install cert into local store 3. DL cert chain from CA to ACS store 4. Tell ACS to use that cert from its store 5. restart ACS 6. log back into ACS and inst
MFP-1 protects infrastructure from management frame attacks (ie aps only). MFP-2 Protects both infrastructure & clients
mping = tests intercontroller control traffic. eping = tests intercontroller data traffic (EoIP)

14. 2 different types of wIPS deployment
when you want some wlcs to be part of the same mobility group - but not others.
802.11w
1. VLAN Mapping 2. WLAN Ordering 3. WLAN Configuration
1. Integrated -- wIPS monitor mode aps are part of client-serving infrastructure 2. Overlay -- wIPS aps - WCS & WLCs are totally seperate

15. What does Fast Secure Roaming use re: Keying
1. In-band virtual gateway -- is at L2 and intercepts all traffic and re-tags the default/untrusted vlan to the trusted vlan - based on compliance 2. In-Band Real IP Gateway - is the gateway 3. Out-of-band virtual gateway (same is 1 - except traffic
Proactive Key Caching (PKC) or CCKM
UDP 5246 & 5247
enables Identity Based Netowrking (IBN) where wlan settings are changed per-user (qos - vlan - acls - or timeouts)

16. What is needed to use Locally Significat Certificates (LSC) when establishing tunnel from OEAP to WLC
when you want some wlcs to be part of the same mobility group - but not others.
PKI
Controll is (mgmnt) not data. To encrypt data: check data encryption under advanced tab of ap config
Does not require re-authentication when a client roams - in an 802.1x/WPA2 environment

17. How does CCKM simplify PMK Caching
1. PMK is only valid for 1 hour -- CCKM creates a main key & derives secondary keys. These secondary keys are sent to all wlc/aps.
uses certificates
1. Temporal Key for Unicast 2. Key Confirmation Key (KCK) - used for group handshakes 3. Key Encryption Key (KEK) - for encrypting the group encyrption key used to derive the braodcast/multicast keys.
a mobility list can contain multiple mobility groups

18. Peap fast reconnect
when you want some wlcs to be part of the same mobility group - but not others.
MFP-1 protects infrastructure from management frame attacks (ie aps only). MFP-2 Protects both infrastructure & clients
1. RSSI 2. Duration 3. Client Count 4. No encryption 5. Managed SSID (ie UNLV) 6. SSID
after authentication - the client & radius server cache session keys for a configurable amount of time

19. What is Ciscos gold confidence level deployment of wIPS aps in a walled environment
MFP-1 protects infrastructure from management frame attacks (ie aps only). MFP-2 Protects both infrastructure & clients
Controll is (mgmnt) not data. To encrypt data: check data encryption under advanced tab of ap config
1 AP per 15 -000 sq. feet.
WLC RADIUS server only works if passwords are sent in Clear-text from LDAP.

20. Enhanced Neighbor list
Proactive Key Caching (PKC) or CCKM
when you want some wlcs to be part of the same mobility group - but not others.
is provided to clients as they associate - including neighbor ap info like channel - rssi etc.
1. on NAS create an oob profile for the WLC 2. Create a new device in NAM - specifying the WLC mgmt ip 3. device mgmnt-->NAS & add the NAS ip as an oob virt. gateway 4. still on nams nas config page - enter the nas trusted int. ip & untrusted int vla

21. Steps to roaming in 802.1R
HTTPS
EAP-FAST with anonymous pac provisioning
1. RSSI 2. Duration 3. Client Count 4. No encryption 5. Managed SSID (ie UNLV) 6. SSID
same as steps to roaming in non-802.1R except: skips PMK negotiation & piggybacks PTK & QoS with the 802.11 authentication & association messages

22. Whats in CCXv4?
1. RSSI 2. SNR 3. Load-Ballancing
peap-mschapv2 - eap-tls - mfp-v1 - nac
PKI
grouping WLCs or map areas - so Lobby ambassadors can create guest accounts only on certain wlcs

23. What part of an 802.11 Beacon contains the security mechanisms in use
RSN Tag. Auth Key mgmt will show PSK - or WPA (for 802.1x) Stands for Robust Security Network
1. Min. RSSI 2. Roam Hysterisis - how much higher than current RSSI compared to neighbor ap RSSI before roaming request initiates 3. Scan Threshold - How low the current RSSI must be for the client to start scanning for a better ap 4. Transition Time
1. config mobility list to support anchor & foreign wlcs (using different mob. groups on ea. to keep auth. seperate between anchor & foreigns) 2. Map the guest wlan on foreign wlc to either mgmt int. or fake dynamic int. (ie dynamic int tied to a vla
1. Off (default) - moves down list and uses next server indefinately. 2. Passive -- Upon failure - server is marked as inactive for (300 seconds) then is put back in list and tried again (if its highest priority). 3. Active -- Actively probes failed

24. What are virtual domains used for in WCS
Inter Access Point Protocol uses UDP between aps to exchange information about new aps (announce) in the area and handoffs that have occurred when client roams
grouping WLCs or map areas - so Lobby ambassadors can create guest accounts only on certain wlcs
1. application type 2. security capabilities 3. QoS policy
It handles .1x & NAC auth. with Single Sign on. WLC forwards RADIUS accounting messages (of EAPOL Success) to the NAC upon login - authing the client to nac - & then it goes through posturing

25. Steps to auth with NAA w/ SSO
Allows intel clients to request a neighbor list at will.
mping = tests intercontroller control traffic. eping = tests intercontroller data traffic (EoIP)
1. User performs .1x with RADIUS 2. WLC forwards radius accounting start to NAM (along with clients IP) 3. clients NAA detects network con. & tries to connect to NAM. 4. NAS Intercepts step 3 & contacts NAM itself to see if client is in the online li
Proactive Key Caching (PKC) or CCKM

26. Steps to setting up an out-of-band virtual gateway NAS setup
802.11w
1. CAPWAP 2. NMSP (network mobility services) 3. SNMP 4. SOAP/XML
WLC can detect 802.11 attacks - but not other attacks from valid wireless clients.
on the WLC -1. Configure an Access vlan & check the quarentine vlan - giving it the quarentine vlan tag 2. on wired net connect the Quarenteen vlan to the untrusted NAS interface. 3. Connect the access vlan to the trusted int. on the nas 4. config sn

27. Methods for authenticating to NAC
clients are load ballanced between them - this can not be configured otherwise.
Proactive Key Caching (PKC) or CCKM
1. Captive Portal 2. NAA (agent installed on windows); auth twice (1 to radius 2 to nac) 3. NAA w/ SSO - user authss once. & wlc auths to nac on their behalf.
MFP

28. Eap process/messages
peap-mschapv2 - eap-tls - mfp-v1 - nac
on the WLC -1. Configure an Access vlan & check the quarentine vlan - giving it the quarentine vlan tag 2. on wired net connect the Quarenteen vlan to the untrusted NAS interface. 3. Connect the access vlan to the trusted int. on the nas 4. config sn
1. disassociation 2. deauthentication 3.QoS (WMM)
1. client -> authenticator: eapol_start 2. authenticator -> client: eap request/identity 3. client -> authenticator: eap response/identity 4. authenticator -> aaa: radius access request 5. aaa -> client: eap-tls handshake 6.aaa -> authenticator: radi

29. Why is fast secure roaming used
1. CBC-DES 2. CFB-AES-128
1. Captive Portal 2. NAA (agent installed on windows); auth twice (1 to radius 2 to nac) 3. NAA w/ SSO - user authss once. & wlc auths to nac on their behalf.
Sends the PMK to all WLCs that the client can roam to.
Does not require re-authentication when a client roams - in an 802.1x/WPA2 environment

30. RADIUS UDP Ports
1812 - Authentication 1813 - Authorization
HTTPS
1. Scanning - for other aps in the area 2. exchanging 802.11 auth messages (first from client then from ap) w/ the target ap 3. exchanging re-association messages with target ap 4. dot1x master key (PMK) negotiation 5. key derivation - 4way handshake
x509v3 certificate

31. Steps to posture assesment
1. client begins in Quarenteen vlan & NAA sends posture assesment to NAS 2. assesment is verified against policies in NAM 3. If in compliance - client is moved to access vlan. If not - NAS sends remediation info to client 4 NAA guides user through re
specifies fast bss transitions by allowing negotiations and requests for wireless resources to occur simultaneously. Does this by allowing for part of the key to be cached (server key) among the network - so full 802.1x auth. isnt required
peap-mschapv2 - eap-tls - mfp-v1 - nac
a mobility list can contain multiple mobility groups

32. When submitting a CSR from ACS
1. Integrated -- wIPS monitor mode aps are part of client-serving infrastructure 2. Overlay -- wIPS aps - WCS & WLCs are totally seperate
Check Shell(exec) then define roles as role1=MANAGEMENT role2=WLAN role3...etc
WLCs create a deriviative of the PMK - called Opportunistic Key Caching (OPC) for fast-roaming among HREAPs in the same HREAP group.
what must you ensure -1.Exportable 2.Server Auth Cert 3.Store cert in local cert store

33. What must be configd on ACS to enable dot1x from switch
EAP-FAST with anonymous pac provisioning
1. Min. RSSI 2. Roam Hysterisis - how much higher than current RSSI compared to neighbor ap RSSI before roaming request initiates 3. Scan Threshold - How low the current RSSI must be for the client to start scanning for a better ap 4. Transition Time
mititgate non-802.11 attacks
1. client begins in Quarenteen vlan & NAA sends posture assesment to NAS 2. assesment is verified against policies in NAM 3. If in compliance - client is moved to access vlan. If not - NAS sends remediation info to client 4 NAA guides user through re

34. How is IBN-VLAN Selection implemted in ACS
Proactive Key Caching (PKC) or CCKM
Check Shell(exec) then define roles as role1=MANAGEMENT role2=WLAN role3...etc
1. Interfac Configuration --> RADIUS (IETF) --> check 64 (Tunnel Type) - 65 (Tunnel Medium Type) - 81 (Tunnel Private-group-id) 2. Navigate to Group Setup and enable the checkboxes for the previous attributes - where 64=VLAN - 65=802 - 81=<Vlan_tag>
on the WLC -1. Configure an Access vlan & check the quarentine vlan - giving it the quarentine vlan tag 2. on wired net connect the Quarenteen vlan to the untrusted NAS interface. 3. Connect the access vlan to the trusted int. on the nas 4. config sn

35. Switch global config to enable dot1x radius server
dot1x system-auth-control - aaa new-model - aaa authentication dot1x default group radius - radius serve host 10.1.1.2 auth-port 1812 acct port 1813 key <key>
1. Allow EAP-MSCHAPv2 2. Allow EAP-GTC 3. Check Posture Validation when doing NAC
1. LEAP 2. EAP-FAST
same as steps to roaming in non-802.1R except: skips PMK negotiation & piggybacks PTK & QoS with the 802.11 authentication & association messages

36. Is data encrypted over a capwap tunnel?
1. CAPWAP 2. NMSP (network mobility services) 3. SNMP 4. SOAP/XML
Controll is (mgmnt) not data. To encrypt data: check data encryption under advanced tab of ap config
1. disassociation 2. deauthentication 3.QoS (WMM)
MFP

37. Encryption algorithm used by Certificates
1. Captive Portal 2. NAA (agent installed on windows); auth twice (1 to radius 2 to nac) 3. NAA w/ SSO - user authss once. & wlc auths to nac on their behalf.
Asymetric (public & Private key-pair)
peap-mschapv2 - eap-tls - mfp-v1 - nac
1. NAC Guest Server (NGS) - Like a RADIUS server when people can create guest accounts 2. Nac Manager (NAM) - Centrilized server for creating policies & profiles that determine network access. 3. Network Access Server (NAS) - The device which control

38. What is HREAP Local Auth limitation
PKI
1. CBC-DES 2. CFB-AES-128
100 local accounts max
grouping WLCs or map areas - so Lobby ambassadors can create guest accounts only on certain wlcs

39. How does the Nac Appliance Agent (NAA) work cohesively with 802.1x
what must you ensure -1.Exportable 2.Server Auth Cert 3.Store cert in local cert store
WLC sends a roam-request to a client when it can better serve that client on a different AP. Client can accept or ignore. CCXv4+
It handles .1x & NAC auth. with Single Sign on. WLC forwards RADIUS accounting messages (of EAPOL Success) to the NAC upon login - authing the client to nac - & then it goes through posturing
1. disassociation 2. deauthentication 3.QoS (WMM)

40. What ports does OEAP use to connect to anchor WLC
uses certificates
EAP-FAST with anonymous pac provisioning
after .1x authentication user is forwarded to a splash page. This is done via RADIUS attribute
UDP 5246 & 5247

41. Main elements of a NAC deployment
based on auth. group -1. vlan 2. qos 3. acl 4. tunnel attributes
1. v2 - LEAP 2. v3 - EAP-FAST 3. v4 - PEAP & EAP-TLS
Check Shell(exec) then define roles as role1=MANAGEMENT role2=WLAN role3...etc
1. NAC Guest Server (NGS) - Like a RADIUS server when people can create guest accounts 2. Nac Manager (NAM) - Centrilized server for creating policies & profiles that determine network access. 3. Network Access Server (NAS) - The device which control

42. How does client MFP work
MFP
is provided to clients as they associate - including neighbor ap info like channel - rssi etc.
Clients download a key for their wlan - after auth - so they can understand that IE in the mgmt frame
x509v3 certificate

43. What must be configured for SSO authentication to work
802.11i - 802.11r - 802.11w & 802.11n
specifies fast bss transitions by allowing negotiations and requests for wireless resources to occur simultaneously. Does this by allowing for part of the key to be cached (server key) among the network - so full 802.1x auth. isnt required
1. WLC must be defined as a VPN Conentrator - in the NAC config. 2. WLC must be configd to send RADIUS acct. to NAC
1. on NAS create an oob profile for the WLC 2. Create a new device in NAM - specifying the WLC mgmt ip 3. device mgmnt-->NAS & add the NAS ip as an oob virt. gateway 4. still on nams nas config page - enter the nas trusted int. ip & untrusted int vla

44. Vlan pooling
assigning multiple vlans to single wlan - and users are dynamically mapped to one of the vlans in round-robin
1. Guest User 2. Sponsor 3. Network Enforcement Device (ie wlc) 4. NGS Server itself
UDP 5246 & 5247
1 AP per 15 -000 sq. feet.

45. What is the radius server override interface option under WLAN-->AAA?
1. CBC-DES 2. CFB-AES-128
WLCs create a deriviative of the PMK - called Opportunistic Key Caching (OPC) for fast-roaming among HREAPs in the same HREAP group.
uses TLS to secure other eap methods like certs - user/pass - smart cards. Identifies itself to client with certificate. Utilizes: fast reconnect (faster roaming w/ key caching) and server authentication
Sends RADIUS packets from a dynamic interface instead of the WLC Mgmt interface address

46. Steps to setting up out-of-band virtual gateway setup on the NAS & NAM
1. Allow EAP-MSCHAPv2 2. Allow EAP-GTC 3. Check Posture Validation when doing NAC
assigning multiple vlans to single wlan - and users are dynamically mapped to one of the vlans in round-robin
1. on NAS create an oob profile for the WLC 2. Create a new device in NAM - specifying the WLC mgmt ip 3. device mgmnt-->NAS & add the NAS ip as an oob virt. gateway 4. still on nams nas config page - enter the nas trusted int. ip & untrusted int vla
US: 1. HIPAA 2. GLBA 3. FFIEC 4. SOX 5. FIPS 6. NIAP Canada: 1. PIPEDA Japan: 1. JPIPA

47. 6 criteria types for rogue classification
MFP-1 protects infrastructure from management frame attacks (ie aps only). MFP-2 Protects both infrastructure & clients
what occurs as a client roams to new ap -WLC forwards cached PMK to AP. Client then forms a Pairwise Transient Key (PTK) via 4-way handshake w/ ap.
US: 1. HIPAA 2. GLBA 3. FFIEC 4. SOX 5. FIPS 6. NIAP Canada: 1. PIPEDA Japan: 1. JPIPA
1. RSSI 2. Duration 3. Client Count 4. No encryption 5. Managed SSID (ie UNLV) 6. SSID

48. When will a WLC use a Local EAP profile?
1. In-band virtual gateway -- is at L2 and intercepts all traffic and re-tags the default/untrusted vlan to the trusted vlan - based on compliance 2. In-Band Real IP Gateway - is the gateway 3. Out-of-band virtual gateway (same is 1 - except traffic
1. Wireless-->AP Global Config-->enable dot1x w/ user/pass 2. Config the switch port to enable auth. to ACS/RADIUS
1. config mobility list to support anchor & foreign wlcs (using different mob. groups on ea. to keep auth. seperate between anchor & foreigns) 2. Map the guest wlan on foreign wlc to either mgmt int. or fake dynamic int. (ie dynamic int tied to a vla
Only when all the RADIUS servers defined globally are unreachable. (ie. even if not called out under WLAN-->AAA - the global RADIUS servers will be used instead of local profile)

49. IAPP roaming protocol
PKI
-150ms
1812 - Authentication 1813 - Authorization
Inter Access Point Protocol uses UDP between aps to exchange information about new aps (announce) in the area and handoffs that have occurred when client roams

50. 3 categories of segmented traffic
Does not require re-authentication when a client roams - in an 802.1x/WPA2 environment
1 AP per 15 -000 sq. feet.
specifies fast bss transitions by allowing negotiations and requests for wireless resources to occur simultaneously. Does this by allowing for part of the key to be cached (server key) among the network - so full 802.1x auth. isnt required
1. application type 2. security capabilities 3. QoS policy

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CCNP Wireless Security

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