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Test your basic knowledge |
CCNP Wireless Security
Start Test
Study First
Subjects
:
cisco
,
it-skills
,
ccnp
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. What are virtual domains used for in WCS
WLC RADIUS server only works if passwords are sent in Clear-text from LDAP.
uses certificates
grouping WLCs or map areas - so Lobby ambassadors can create guest accounts only on certain wlcs
checking allow aaa over-ride in the wlan-->advanced.
2. What is included in a Pairwise Transient Key (PTK)
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
Does not require re-authentication when a client roams - in an 802.1x/WPA2 environment
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.
Asymetric (public & Private key-pair)
3. Briefly describe eap-tls
mfp-v2
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
mping = tests intercontroller control traffic. eping = tests intercontroller data traffic (EoIP)
uses certificates
4. How does CCKM simplify PMK Caching
1. RSSI 2. Duration 3. Client Count 4. No encryption 5. Managed SSID (ie UNLV) 6. SSID
802.11w
MFP
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.
5. Is data encrypted over a capwap tunnel?
Proactive Key Caching (PKC) or CCKM
Asymetric (public & Private key-pair)
Controll is (mgmnt) not data. To encrypt data: check data encryption under advanced tab of ap config
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
6. What is NGS & whats it used for
Nac Guest Server - used for provisioning guest accts - detailed usage reporting - delivery of creds via emai/sms -
checking allow aaa over-ride in the wlan-->advanced.
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
1. LEAP 2. EAP-FAST
7. What does FIPS-2 require for WLC to RADIUS communications
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
used with PEAP for user/password authentication
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
AES-Key Wrap
8. What CCX version is required for CCKM
mping = tests intercontroller control traffic. eping = tests intercontroller data traffic (EoIP)
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
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. v2 - LEAP 2. v3 - EAP-FAST 3. v4 - PEAP & EAP-TLS
9. 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. 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
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.
Controll is (mgmnt) not data. To encrypt data: check data encryption under advanced tab of ap config
10. What does IBN allow you to assign
based on auth. group -1. vlan 2. qos 3. acl 4. tunnel attributes
1. disassociation 2. deauthentication 3.QoS (WMM)
Does not require re-authentication when a client roams - in an 802.1x/WPA2 environment
Nac Guest Server - used for provisioning guest accts - detailed usage reporting - delivery of creds via emai/sms -
11. How is the CAPWAP tunnel between AP & WLC encrypted
Allows intel clients to request a neighbor list at will.
x509v3 certificate
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
clients are load ballanced between them - this can not be configured otherwise.
12. 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.
WLCs create a deriviative of the PMK - called Opportunistic Key Caching (OPC) for fast-roaming among HREAPs in the same HREAP group.
switchport mode access - dot1x pae authenticator - dot1x port-control auto
Check Shell(exec) then define roles as role1=MANAGEMENT role2=WLAN role3...etc
13. How to set up tacacs roles in ACS for WLC authorization
300ms
1. Integrated -- wIPS monitor mode aps are part of client-serving infrastructure 2. Overlay -- wIPS aps - WCS & WLCs are totally seperate
1812 - Authentication 1813 - Authorization
Check Shell(exec) then define roles as role1=MANAGEMENT role2=WLAN role3...etc
14. Peap fast reconnect
same as steps to roaming in non-802.1R except: skips PMK negotiation & piggybacks PTK & QoS with the 802.11 authentication & association messages
is provided to clients as they associate - including neighbor ap info like channel - rssi etc.
MFP-1 protects infrastructure from management frame attacks (ie aps only). MFP-2 Protects both infrastructure & clients
after authentication - the client & radius server cache session keys for a configurable amount of time
15. How to add IPS TLS info to WLC
Security --> Advanced --> CIDS --> Sensors
100 local accounts max
1. Integrated -- wIPS monitor mode aps are part of client-serving infrastructure 2. Overlay -- wIPS aps - WCS & WLCs are totally seperate
1. CAPWAP 2. NMSP (network mobility services) 3. SNMP 4. SOAP/XML
16. What are the 4 main components of NGS re: guests
EAP-FAST with anonymous pac provisioning
1. Guest User 2. Sponsor 3. Network Enforcement Device (ie wlc) 4. NGS Server itself
Check Shell(exec) then define roles as role1=MANAGEMENT role2=WLAN role3...etc
802.11i - 802.11r - 802.11w & 802.11n
17. Switchport config to enable dot1x on a port
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. 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
Asymetric (public & Private key-pair)
switchport mode access - dot1x pae authenticator - dot1x port-control auto
18. NAC Deployment Types
1. v2 - LEAP 2. v3 - EAP-FAST 3. v4 - PEAP & EAP-TLS
based on auth. group -1. vlan 2. qos 3. acl 4. tunnel attributes
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. 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
19. What is the WLAN-->Advanced--> DIagnostic Channel used for
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
mping = tests intercontroller control traffic. eping = tests intercontroller data traffic (EoIP)
checking allow aaa over-ride in the wlan-->advanced.
300ms
20. RADIUS UDP Ports
x509v3 certificate
1. HMAC-MD5 2. HMAC-SHA
1812 - Authentication 1813 - Authorization
1. RSSI 2. SNR 3. Load-Ballancing
21. How long before an HREAP goes into disconnected/standalone mode
based on auth. group -1. vlan 2. qos 3. acl 4. tunnel attributes
enables Identity Based Netowrking (IBN) where wlan settings are changed per-user (qos - vlan - acls - or timeouts)
clients are load ballanced between them - this can not be configured otherwise.
300ms
22. What is the radius server override interface option under WLAN-->AAA?
1. Integrated -- wIPS monitor mode aps are part of client-serving infrastructure 2. Overlay -- wIPS aps - WCS & WLCs are totally seperate
Sends RADIUS packets from a dynamic interface instead of the WLC Mgmt interface address
1. VLAN Mapping 2. WLAN Ordering 3. WLAN Configuration
US: 1. HIPAA 2. GLBA 3. FFIEC 4. SOX 5. FIPS 6. NIAP Canada: 1. PIPEDA Japan: 1. JPIPA
23. Enhanced Neighbor list - E2E
MFP
DTLS (Datagram Transport Layer Security)
when you want some wlcs to be part of the same mobility group - but not others.
Allows intel clients to request a neighbor list at will.
24. Whats included in 802.11-2012
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>
300ms
1. Allow EAP-MSCHAPv2 2. Allow EAP-GTC 3. Check Posture Validation when doing NAC
802.11i - 802.11r - 802.11w & 802.11n
25. 3 categories of segmented traffic
EAP-FAST with anonymous pac provisioning
1. application type 2. security capabilities 3. QoS policy
Sends the PMK to all WLCs that the client can roam to.
Allows intel clients to request a neighbor list at will.
26. WLC Tacacs+ roles
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
used with PEAP for user/password authentication
Corrospond to top-menu GUI items (wireless - security - monitor etc)
grouping WLCs or map areas - so Lobby ambassadors can create guest accounts only on certain wlcs
27. Steps to setting up an out-of-band virtual gateway NAS setup
when you want some wlcs to be part of the same mobility group - but not others.
no
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. 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
28. Whats in CCXv4?
peap-mschapv2 - eap-tls - mfp-v1 - nac
Controll is (mgmnt) not data. To encrypt data: check data encryption under advanced tab of ap config
Nac Guest Server - used for provisioning guest accts - detailed usage reporting - delivery of creds via emai/sms -
1. udp 16666 for control traffic 2. IP Protocol 97 (EoIP) for client data traffic
29. 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)
MFP
Check Shell(exec) then define roles as role1=MANAGEMENT role2=WLAN role3...etc
a mobility list can contain multiple mobility groups
30. Enhanced Neighbor list
1. disassociation 2. deauthentication 3.QoS (WMM)
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
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.
is provided to clients as they associate - including neighbor ap info like channel - rssi etc.
31. Authentication types used by SNMPv3
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. HMAC-MD5 2. HMAC-SHA
after authentication - the client & radius server cache session keys for a configurable amount of time
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>
32. Encryption types used by SNMPv3
1. CBC-DES 2. CFB-AES-128
a mobility list can contain multiple mobility groups
1. VLAN Mapping 2. WLAN Ordering 3. WLAN Configuration
based on auth. group -1. vlan 2. qos 3. acl 4. tunnel attributes
33. When PKC is used
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
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.
mititgate non-802.11 attacks
1. udp 16666 for control traffic 2. IP Protocol 97 (EoIP) for client data traffic
34. Difference between MFP-1 & MFP-2
DTLS (Datagram Transport Layer Security)
MFP-1 protects infrastructure from management frame attacks (ie aps only). MFP-2 Protects both infrastructure & clients
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. CBC-DES 2. CFB-AES-128
35. Steps to roaming in non802.1R
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. 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. v2 - LEAP 2. v3 - EAP-FAST 3. v4 - PEAP & EAP-TLS
1. udp 16666 for control traffic 2. IP Protocol 97 (EoIP) for client data traffic
36. Steps to config. .1x for AP to WLC connections
used with PEAP for user/password authentication
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
1. Wireless-->AP Global Config-->enable dot1x w/ user/pass 2. Config the switch port to enable auth. to ACS/RADIUS
37. How does client MFP work
switchport mode access - dot1x pae authenticator - dot1x port-control auto
Clients download a key for their wlan - after auth - so they can understand that IE in the mgmt frame
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. 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
38. 3 modes of radius fallback
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
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>
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. 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
39. What triggers can initiate a WLC to request a client to roam
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
Security --> Advanced --> CIDS --> Sensors
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.
is provided to clients as they associate - including neighbor ap info like channel - rssi etc.
40. What is HREAP Local Auth limitation
100 local accounts max
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
x509 cert to establish DTLS capwap control tunnel. It can be either 1. LSC 2. MIC (Mafctr installed cert) or 3. SSC
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+
41. Steps to adding an IPS
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
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
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
DTLS (Datagram Transport Layer Security)
42. How is IBN-QoS
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.
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
43. When submitting a CSR from ACS
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
1. Guest User 2. Sponsor 3. Network Enforcement Device (ie wlc) 4. NGS Server itself
used with PEAP for user/password authentication
what must you ensure -1.Exportable 2.Server Auth Cert 3.Store cert in local cert store
44. Eap process/messages
WLCs create a deriviative of the PMK - called Opportunistic Key Caching (OPC) for fast-roaming among HREAPs in the same HREAP group.
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
mititgate non-802.11 attacks
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
45. Ports to open on fw to allow foreign to anchor controller tunnel to be built
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. udp 16666 for control traffic 2. IP Protocol 97 (EoIP) for client data traffic
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. Allow EAP-MSCHAPv2 2. Allow EAP-GTC 3. Check Posture Validation when doing NAC
46. Why add an IPS if WLCs already detect attacks.
mfp-v2
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
WLC can detect 802.11 attacks - but not other attacks from valid wireless clients.
UDP 5246 & 5247
47. Describe AP Assisted Roaming
DTLS (Datagram Transport Layer Security)
used with PEAP for user/password authentication
1. application type 2. security capabilities 3. QoS policy
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
48. 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. Guest User 2. Sponsor 3. Network Enforcement Device (ie wlc) 4. NGS Server itself
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. CAPWAP 2. NMSP (network mobility services) 3. SNMP 4. SOAP/XML
49. Main elements of a NAC deployment
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. PMK is only valid for 1 hour -- CCKM creates a main key & derives secondary keys. These secondary keys are sent to all wlc/aps.
WLC RADIUS server only works if passwords are sent in Clear-text from LDAP.
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
50. How fast is fast secure roaming
WLCs create a deriviative of the PMK - called Opportunistic Key Caching (OPC) for fast-roaming among HREAPs in the same HREAP group.
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
-150ms
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