Test your basic knowledge |

CCNP Wireless Security

Instructions:

Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can study here.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

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. Eap process/messages
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
Sends RADIUS packets from a dynamic interface instead of the WLC Mgmt interface address
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
1. Create user acct. in IDS for each WLC in the viewer role 2. add the WLCs IP as an allowed host 3. Obtain the IPS TLS Fingerprint & add it to WLC 4. Enable the client exclusion policy on the WLAN 5. Set msg log level to Alerts to log IPS events

2. Regulatory Compliance Acronyms
1. v2 - LEAP 2. v3 - EAP-FAST 3. v4 - PEAP & EAP-TLS
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. 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.
US: 1. HIPAA 2. GLBA 3. FFIEC 4. SOX 5. FIPS 6. NIAP Canada: 1. PIPEDA Japan: 1. JPIPA

3. What is Ciscos gold confidence level deployment of wIPS aps in a walled environment
1 AP per 15 -000 sq. feet.
1. LEAP 2. EAP-FAST
mfp-v2
what must you ensure -1.Exportable 2.Server Auth Cert 3.Store cert in local cert store

4. How to add IPS TLS info to WLC
Security --> Advanced --> CIDS --> Sensors
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
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

5. Encryption types used by SNMPv3
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.
1. CBC-DES 2. CFB-AES-128
1. udp 16666 for control traffic 2. IP Protocol 97 (EoIP) for client data traffic
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.

6. 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.
US: 1. HIPAA 2. GLBA 3. FFIEC 4. SOX 5. FIPS 6. NIAP Canada: 1. PIPEDA Japan: 1. JPIPA
RSN Tag. Auth Key mgmt will show PSK - or WPA (for 802.1x) Stands for Robust Security Network
Proactive Key Caching (PKC) or CCKM

7. Whats included in 802.11-2012
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. 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
802.11i - 802.11r - 802.11w & 802.11n
when you want some wlcs to be part of the same mobility group - but not others.

8. What part of an 802.11 Beacon contains the security mechanisms in use
ACL - or Interface-name configured in ACS -1. Interface Configuration --> RADIUS (Cisco Airspace) and check off: Air-Qos-Level - Aire-DSCP - Aire-802.1p tag - Aire-Interface-name - Air-ACL-Name
RSN Tag. Auth Key mgmt will show PSK - or WPA (for 802.1x) Stands for Robust Security Network
1. Create user acct. in IDS for each WLC in the viewer role 2. add the WLCs IP as an allowed host 3. Obtain the IPS TLS Fingerprint & add it to WLC 4. Enable the client exclusion policy on the WLAN 5. Set msg log level to Alerts to log IPS events
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

9. NAC Deployment Types
mping = tests intercontroller control traffic. eping = tests intercontroller data traffic (EoIP)
1. CBC-DES 2. CFB-AES-128
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
after authentication - the client & radius server cache session keys for a configurable amount of time

10. When submitting a CSR from ACS
what must you ensure -1.Exportable 2.Server Auth Cert 3.Store cert in local cert store
RSN Tag. Auth Key mgmt will show PSK - or WPA (for 802.1x) Stands for Robust Security Network
1. VLAN Mapping 2. WLAN Ordering 3. WLAN Configuration
HTTPS

11. What ports does OEAP use to connect to anchor WLC
HTTPS
Security --> Advanced --> CIDS --> Sensors
Sends the PMK to all WLCs that the client can roam to.
UDP 5246 & 5247

12. Whats in CCXv4?
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
1. CBC-DES 2. CFB-AES-128
peap-mschapv2 - eap-tls - mfp-v1 - nac
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

13. 3 modes of radius fallback
what must you ensure -1.Exportable 2.Server Auth Cert 3.Store cert in local cert store
DTLS (Datagram Transport Layer Security)
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. 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

14. Protocols used in wIPS
1. CAPWAP 2. NMSP (network mobility services) 3. SNMP 4. SOAP/XML
after .1x authentication user is forwarded to a splash page. This is done via RADIUS attribute
checking allow aaa over-ride in the wlan-->advanced.
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

15. How does CCKM simplify PMK Caching
checking allow aaa over-ride in the wlan-->advanced.
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
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.
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>

16. How fast is fast secure roaming
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>
PKI
-150ms
1. Wireless-->AP Global Config-->enable dot1x w/ user/pass 2. Config the switch port to enable auth. to ACS/RADIUS

17. RADIUS UDP Ports
1812 - Authentication 1813 - Authorization
after .1x authentication user is forwarded to a splash page. This is done via RADIUS attribute
Security --> Advanced --> CIDS --> Sensors
US: 1. HIPAA 2. GLBA 3. FFIEC 4. SOX 5. FIPS 6. NIAP Canada: 1. PIPEDA Japan: 1. JPIPA

18. Enhanced Neighbor list
802.11w
is provided to clients as they associate - including neighbor ap info like channel - rssi etc.
ACL - or Interface-name configured in ACS -1. Interface Configuration --> RADIUS (Cisco Airspace) and check off: Air-Qos-Level - Aire-DSCP - Aire-802.1p tag - Aire-Interface-name - Air-ACL-Name
mping = tests intercontroller control traffic. eping = tests intercontroller data traffic (EoIP)

19. What is the WLAN-->Advanced--> DIagnostic Channel used for
DTLS (Datagram Transport Layer Security)
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
MFP-1 protects infrastructure from management frame attacks (ie aps only). MFP-2 Protects both infrastructure & clients
puts the ap and client through tests to isolate connection issues. This disables the wlan while doing this. Can be used to diagnose .1x auth - .11 association etc. if using ccxv5

20. What is NGS & whats it used for
RSN Tag. Auth Key mgmt will show PSK - or WPA (for 802.1x) Stands for Robust Security Network
1. HMAC-MD5 2. HMAC-SHA
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
Nac Guest Server - used for provisioning guest accts - detailed usage reporting - delivery of creds via emai/sms -

21. How does the Nac Appliance Agent (NAA) work cohesively with 802.1x
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
1 AP per 15 -000 sq. feet.
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
uses certificates

22. Reason why you can NOT use WLC RADIUS server to auth. against OpenLDAP or Win-2003 (or later)
1. RSSI 2. Duration 3. Client Count 4. No encryption 5. Managed SSID (ie UNLV) 6. SSID
WLC RADIUS server only works if passwords are sent in Clear-text from LDAP.
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
used with PEAP for user/password authentication

23. Briefly describe eap-tls
assigning multiple vlans to single wlan - and users are dynamically mapped to one of the vlans in round-robin
uses certificates
1. HMAC-MD5 2. HMAC-SHA
1. RSSI 2. Duration 3. Client Count 4. No encryption 5. Managed SSID (ie UNLV) 6. SSID

24. Things to Enable in ACS (Global Authentication Page) for PEAP support
1. Allow EAP-MSCHAPv2 2. Allow EAP-GTC 3. Check Posture Validation when doing NAC
RSN Tag. Auth Key mgmt will show PSK - or WPA (for 802.1x) Stands for Robust Security Network
peap-mschapv2 - eap-tls - mfp-v1 - nac
Proactive Key Caching (PKC) or CCKM

25. Steps to configure wlcs for guest wlan
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
grouping WLCs or map areas - so Lobby ambassadors can create guest accounts only on certain wlcs
US: 1. HIPAA 2. GLBA 3. FFIEC 4. SOX 5. FIPS 6. NIAP Canada: 1. PIPEDA Japan: 1. JPIPA

26. Steps to setting up out-of-band virtual gateway setup on the NAS & NAM
PKI
Corrospond to top-menu GUI items (wireless - security - monitor etc)
1. disassociation 2. deauthentication 3.QoS (WMM)
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

27. What is the IEEE Standards version of MFP
802.11w
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
Corrospond to top-menu GUI items (wireless - security - monitor etc)
puts the ap and client through tests to isolate connection issues. This disables the wlan while doing this. Can be used to diagnose .1x auth - .11 association etc. if using ccxv5

28. How to set up tacacs roles in ACS for WLC authorization
ACL - or Interface-name configured in ACS -1. Interface Configuration --> RADIUS (Cisco Airspace) and check off: Air-Qos-Level - Aire-DSCP - Aire-802.1p tag - Aire-Interface-name - Air-ACL-Name
Check Shell(exec) then define roles as role1=MANAGEMENT role2=WLAN role3...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
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

29. What is a mobility list used for
what must you ensure -1.Exportable 2.Server Auth Cert 3.Store cert in local cert store
1. v2 - LEAP 2. v3 - EAP-FAST 3. v4 - PEAP & EAP-TLS
1. Create user acct. in IDS for each WLC in the viewer role 2. add the WLCs IP as an allowed host 3. Obtain the IPS TLS Fingerprint & add it to WLC 4. Enable the client exclusion policy on the WLAN 5. Set msg log level to Alerts to log IPS events
when you want some wlcs to be part of the same mobility group - but not others.

30. Steps to installing Server Cert into ACS
puts the ap and client through tests to isolate connection issues. This disables the wlan while doing this. Can be used to diagnose .1x auth - .11 association etc. if using ccxv5
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+
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
802.11i - 802.11r - 802.11w & 802.11n

31. Peap fast reconnect
checking allow aaa over-ride in the wlan-->advanced.
HTTPS
mping = tests intercontroller control traffic. eping = tests intercontroller data traffic (EoIP)
after authentication - the client & radius server cache session keys for a configurable amount of time

32. What does a wired IPS do compared to the WLC IDS
clients are load ballanced between them - this can not be configured otherwise.
mititgate non-802.11 attacks
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
US: 1. HIPAA 2. GLBA 3. FFIEC 4. SOX 5. FIPS 6. NIAP Canada: 1. PIPEDA Japan: 1. JPIPA

33. What does Fast Secure Roaming use re: Keying
Proactive Key Caching (PKC) or CCKM
100 local accounts max
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.
PKI

34. Describe AP Assisted Roaming
enables Identity Based Netowrking (IBN) where wlan settings are changed per-user (qos - vlan - acls - or timeouts)
300ms
assigning multiple vlans to single wlan - and users are dynamically mapped to one of the vlans in round-robin
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

35. Switchport config to enable dot1x on a port
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
switchport mode access - dot1x pae authenticator - dot1x port-control auto
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
when you want some wlcs to be part of the same mobility group - but not others.

36. What are virtual domains used for in WCS
mping = tests intercontroller control traffic. eping = tests intercontroller data traffic (EoIP)
grouping WLCs or map areas - so Lobby ambassadors can create guest accounts only on certain wlcs
1. Wireless-->AP Global Config-->enable dot1x w/ user/pass 2. Config the switch port to enable auth. to ACS/RADIUS
after .1x authentication user is forwarded to a splash page. This is done via RADIUS attribute

37. How long before an HREAP goes into disconnected/standalone mode
after authentication - the client & radius server cache session keys for a configurable amount of time
US: 1. HIPAA 2. GLBA 3. FFIEC 4. SOX 5. FIPS 6. NIAP Canada: 1. PIPEDA Japan: 1. JPIPA
300ms
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>

38. How does client MFP work
Clients download a key for their wlan - after auth - so they can understand that IE in the mgmt frame
mititgate non-802.11 attacks
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>
-150ms

39. Vlan pooling
checking allow aaa over-ride in the wlan-->advanced.
a mobility list can contain multiple mobility groups
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
assigning multiple vlans to single wlan - and users are dynamically mapped to one of the vlans in round-robin

40. Will foreign/anchor communication work through PAT?
Security --> Advanced --> CIDS --> Sensors
no
Sends RADIUS packets from a dynamic interface instead of the WLC Mgmt interface address
Controll is (mgmnt) not data. To encrypt data: check data encryption under advanced tab of ap config

41. What does FIPS-2 require for WLC to RADIUS communications
1. HMAC-MD5 2. HMAC-SHA
AES-Key Wrap
when you want some wlcs to be part of the same mobility group - but not others.
1. v2 - LEAP 2. v3 - EAP-FAST 3. v4 - PEAP & EAP-TLS

42. What is 802.11w?
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
peap-mschapv2 - eap-tls - mfp-v1 - nac
MFP
x509 cert to establish DTLS capwap control tunnel. It can be either 1. LSC 2. MIC (Mafctr installed cert) or 3. SSC

43. How is IBN-QoS
peap-mschapv2 - eap-tls - mfp-v1 - nac
ACL - or Interface-name configured in ACS -1. Interface Configuration --> RADIUS (Cisco Airspace) and check off: Air-Qos-Level - Aire-DSCP - Aire-802.1p tag - Aire-Interface-name - Air-ACL-Name
used with PEAP for user/password authentication
Corrospond to top-menu GUI items (wireless - security - monitor etc)

44. Steps to setting up an out-of-band virtual gateway NAS setup
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
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
Sends RADIUS packets from a dynamic interface instead of the WLC Mgmt interface address
1. Integrated -- wIPS monitor mode aps are part of client-serving infrastructure 2. Overlay -- wIPS aps - WCS & WLCs are totally seperate

45. Steps to auth with NAA w/ SSO
puts the ap and client through tests to isolate connection issues. This disables the wlan while doing this. Can be used to diagnose .1x auth - .11 association etc. if using ccxv5
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. 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
100 local accounts max

46. When will a WLC use a Local EAP profile?
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)
grouping WLCs or map areas - so Lobby ambassadors can create guest accounts only on certain wlcs
1 AP per 15 -000 sq. feet.
after .1x authentication user is forwarded to a splash page. This is done via RADIUS attribute

47. What must be configured for SSO authentication to work
1. Allow EAP-MSCHAPv2 2. Allow EAP-GTC 3. Check Posture Validation when doing NAC
1. WLC must be defined as a VPN Conentrator - in the NAC config. 2. WLC must be configd to send RADIUS acct. to NAC
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
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

48. How is the CAPWAP tunnel between AP & WLC encrypted
x509v3 certificate
same as steps to roaming in non-802.1R except: skips PMK negotiation & piggybacks PTK & QoS with the 802.11 authentication & association messages
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)
mfp-v2

49. Whats added in CCXv5?
mfp-v2
mping = tests intercontroller control traffic. eping = tests intercontroller data traffic (EoIP)
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>
1. Allow EAP-MSCHAPv2 2. Allow EAP-GTC 3. Check Posture Validation when doing NAC

50. What protocol to WLCs use to communicate with IPS
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.
used with PEAP for user/password authentication
HTTPS
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+