05-18-2012 09:38 AM - edited 03-10-2019 07:06 PM
So I've read about 2 weeks of posts trying to figure this out and read multiple guides to no avail. So i'm hoping it's a stupid mistake. First here is my AP config.
ap#sh run
Building configuration...
Current configuration : 1750 bytes
!
version 12.4
no service pad
service timestamps debug datetime msec
service timestamps log datetime msec
service password-encryption
!
hostname ap
!
logging rate-limit console 9
enable secret 5 $1$ONQR$Qrzcg9Lyrt2tFlyki7Qr4/
!
aaa new-model
!
!
aaa group server radius rad_eap
server 10.10.11.200 auth-port 1812 acct-port 1813
!
aaa authentication login eap_methods group rad_eap
!
aaa session-id common
!
!
dot11 syslog
!
dot11 ssid syrushcw
authentication open eap eap_methods
authentication key-management wpa version 2
guest-mode
!
!
!
username Cisco password 7 1531021F0725
!
!
bridge irb
!
!
interface Dot11Radio0
no ip address
no ip route-cache
!
encryption mode ciphers aes-ccm
!
encryption vlan 1 mode ciphers aes-ccm
!
ssid syrushcw
!
antenna gain 0
speed basic-11.0 basic-6.0 basic-9.0 basic-12.0 basic-18.0 basic-24.0 basic-36.0 basic-48.0 basic-54.0 m0. m1. m2. m3. m4. m5. m6. m7. m8. m9. m10. m11. m12. m13. m14. m15.
channel 2437
station-role root
bridge-group 1
bridge-group 1 subscriber-loop-control
bridge-group 1 block-unknown-source
no bridge-group 1 source-learning
no bridge-group 1 unicast-flooding
bridge-group 1 spanning-disabled
!
interface GigabitEthernet0
no ip address
no ip route-cache
duplex auto
speed auto
no keepalive
bridge-group 1
no bridge-group 1 source-learning
bridge-group 1 spanning-disabled
!
interface BVI1
ip address 10.10.11.100 255.255.252.0
no ip route-cache
!
ip http server
no ip http secure-server
ip http help-path http://www.cisco.com/warp/public/779/smbiz/prodconfig/help/eag
ip radius source-interface BVI1
radius-server host 10.10.11.200 auth-port 1812 acct-port 1813 key 7 12092504011C5C162E
bridge 1 route ip
!
!
!
line con 0
line vty 0 4
!
end
ap#
I do not know if the problem is on the AP or NPS server. I've read things such as worked fine on 2008 but exported and imported the config on 2008R2 and did not work. I am of course running 2008 R2. I've alse read NPS expects to get credentials in MD5-CHAP but cisco sends in Plain Text. I Know the client and server are talking since if I make a change on the server the cliet error is diffrent. Example
ap#test aaa group rad_eap cmclaine password legacy
Attempting authentication test to server-group rad_eap using radius
No authoritative response from any server.
If I uncheck Access-Request message must contain the Message-Authenticator attribute under Radius Clients Properties in NPS I get.
ap#test aaa group rad_eap cmclaine password legacy
Attempting authentication test to server-group rad_eap using radius
User authentication request was rejected by server.
In even viewer I see events such as Event ID 17 " An Access-Request was recieved from Radius client 10.10.11.100 without a Message-Authenticator attribute when a Message-Authenticator attribute is required."
I do not know if it matters I am running this on a Virtual Machine; I've tried both Virtual Box and Hyper-V. The virtual Machine has the fireall turned off, the only reason I bring this up; is when I do a netstat there are no connections to port 1812 or 1813.
I appreciate any help, thanks!
Solved! Go to Solution.
05-20-2012 08:43 AM
I'm sure that the issue is within the access-policy. In order to eliminate that could you please delete the existing policy and create a nerw one.
Create a network Policy as follows;
a. Right click network policies and click new
b. Type a policy name accept the defaults and click next
c. Add a condition (use NAS-IP-ADDRESS= AP BVI interface IP), click next
d. Make sure the access granted radio button is selected and hit next
e. Select the “Unencrypted authentication (PAP, SPAP)” and unselect the rest
f. Select NO on the annoying help box
g. Finally select next then next and finish to complete.
NOTE: Move this policy on the top of the list.
Also, make sure we have shared secret between AP and NPS is correct.
Regards,
Jatin
05-18-2012 08:01 PM
Since you're getting, an Access-Request was recieved from Radius client 10.10.11.100 without a Message-Authenticator attribute when a Message-Authenticator attribute is required.
On the NPS, could you uncheck the check-box as " Access-Request messages must contain the Message-Authenticator attribute". After that look inside the event viewer logs again.
Do let me know.
Regards,
Jatin
05-19-2012 04:30 AM
When I uncheck the box, on the AP I get
"Attempting authentication test to server-group rad_eap using radius
User authentication request was rejected by server."
But no event on the Server which I thought was bizzare.
05-19-2012 11:37 AM
Where exectly are we looking for logs in the event viewer?
When you run a test command from any NAS device that actually uses PAP as an authentication method. I doubt if we have enabled the same method under network policy.
Since we're getting access-reject from the radius server so server logs will surely help us.
Also, we can get debugs from the AP to see if it shows something.
debug aaa authentication
debug radius
Regards,
Jatin
05-19-2012 01:47 PM
Debug gives nothing
ap#debug aaa authentication
AAA Authentication debugging is on
ap#debug radius
Radius protocol debugging is on
Radius protocol brief debugging is off
Radius protocol verbose debugging is off
Radius packet hex dump debugging is off
Radius packet protocol debugging is on
Radius elog debugging debugging is off
Radius packet retransmission debugging is off
Radius server fail-over debugging is off
Radius elog debugging debugging is off
ap#test aaa group rad_eap cmclaine password legacy
Attempting authentication test to server-group rad_eap using radius
User authentication request was rejected by server.
ap#test aaa group rad_eap cmclaine password legacy
Attempting authentication test to server-group rad_eap using radius
User authentication request was rejected by server.
ap#test aaa group rad_eap cmclaine password legacy
Attempting authentication test to server-group rad_eap using radius
User authentication request was rejected by server.
ap#test aaa group rad_eap cmclaine password legacy
Attempting authentication test to server-group rad_eap using radius
No authoritative response from any server.
Here is the event I'm looking at, no new logs appear when I uncheck Access-Request.
I am using PAP also
05-19-2012 01:56 PM
Seems like you ran those commands while connected through telnet/ssh.
We should turn on
terminal monitor
regards,
Jatin
05-19-2012 02:15 PM
ap#test aaa group rad_eap cmclaine password legacy
Attempting authentication test to server-group rad_eap using radius
*Mar 22 02:41:37.669: AAA: parse name=
*Mar 22 02:41:37.669: AAA/MEMORY: create_user (0x234C804) user='cmclaine' ruser= 'NULL' ds0=0 port='' rem_addr='NULL' authen_type=ASCII service=LOGIN priv=1 init ial_task_id='0', vrf= (id=0)
*Mar 22 02:41:37.669: RADIUS: Pick NAS IP for u=0x234C804 tableid=0 cfg_addr=10. 10.11.100
*Mar 22 02:41:37.669: RADIUS: ustruct sharecount=1
*Mar 22 02:41:37.669: Radius: radius_port_info() success=0 radius_nas_port=1
*Mar 22 02:41:37.670: RADIUS(00000000): Send Access-Request to 10.10.11.200:1812 id 1645/6, len 60
*Mar 22 02:41:37.670: RADIUS: authenticator 44 BE 1F 29 EB 13 91 18 - A6 75 47 2E 74 69 5C 1D
*Mar 22 02:41:37.670: RADIUS: NAS-IP-Address [4] 6 10.10.11.100
*Mar 22 02:41:37.670: RADIUS: NAS-Port-Type [61] 6 Async [0]
*Mar 22 02:41:37.670: RADIUS: User-Name [1] 10 "cmclaine"
*Mar 22 02:41:37.670: RADIUS: User-Password [2] 18 *
*Mar 22 02:41:42.162: RADIUS: Retransmit to (10.10.11.200:1812,1813) for id 1645/6
*Mar 22 02:41:46.482: RADIUS: Retransmit to (10.10.11.200:1812,1813) for id 1645/6
*Mar 22 02:41:50.802: RADIUS: Retransmit to (10.10.11.200:1812,1813) for id 1645/6No authoritative response from any server.
ap#
*Mar 22 02:41:55.602: %RADIUS-4-RADIUS_DEAD: RADIUS server 10.10.11.200:1812,1813 is not responding.
*Mar 22 02:41:55.602: RADIUS: Tried all servers.
*Mar 22 02:41:55.602: RADIUS: No valid server found. Trying any viable server
*Mar 22 02:41:55.602: RADIUS: Tried all servers.
*Mar 22 02:41:55.602: RADIUS: No response from (10.10.11.200:1812,1813) for id 1645/6
*Mar 22 02:41:55.602: RADIUS: No response from server
*Mar 22 02:41:55.603: AAA/MEMORY: free_user (0x234C804) user='cmclaine' ruser='NULL' port='' rem_addr='NULL' authen_type=ASCII service=LOGIN priv=1 vrf= (id=0)
*Mar 22 02:41:55.603: %RADIUS-4-RADIUS_ALIVE: RADIUS server 10.10.11.200:1812,1813 is being marked alive.
05-19-2012 02:38 PM
Let's troubleshoot while we have that option unchecked.
Can you send me the screen shots of radius client and network policy.
05-19-2012 02:53 PM
When you see an access-reject from any radius server that indicates that the request has been processed by radius. If we don't see any corresponsing logs in the event viewer then there could be an issues with logging/NPS.
This is what I found in my google search.
Also, NPS records connection request failure events in the System and Security event logs by default. For the radius access-reject, please check the logs in the above suggested location.
http://technet.microsoft.com/en-us/library/cc753898%28v=ws.10%29.aspx
05-19-2012 03:58 PM
05-19-2012 06:43 PM
Interesting problem now, I do not know if the AP is bad, but when I ping from the AP to NPS ping either works 0% or 20%. It can ping some other IP just fine. Now the interesting part is the NPS can ping the AP no problem.
ap#ping 10.10.11.200
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.10.11.200, timeout is 2 seconds:
!....
Success rate is 20 percent (1/5), round-trip min/avg/max = 2/2/2 ms
ap#ping 10.10.8.12
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.10.8.12, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/1/1 ms
Here is an example, 10.10.8.12 is a host os Windows 7 and 10.10.11.200 is the guest os 2008R2.
ap#ping 10.10.8.12
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.10.8.12, timeout is 2 seconds:
!....
Success rate is 20 percent (1/5), round-trip min/avg/max = 2/2/2 ms
Spoke to soon.
05-20-2012 02:53 AM
I went through your last post wherein you've uploaded all the settings. looking at second last screen shot. I see you've lots of conditions defined. I'd like you to try this:
Keep this option unchecked "Access-Request message must contain the Message-Authenticator attribute" under Radius Clients Properties in NPS
Remove all the conditions from condition tab like Nas Port-type, User groups (domain admin and domain groups), Allowed EAP Types.
Add NAS-IP-ADDRESS= 10.10.11.100 instead.
Click OK And restart NPS service.
Try again from test command, it should work now.
NOTE: When you run test command, it actually uses NAS-PORT type= async, authentication method=PAP. However, those options are not selecetd in your network policy.
Once it starts working for you. We'll configure only for wireless authentication.
Let me know how it goes.
Regards,
Jatin
Do rate helpful posts-
05-20-2012 04:13 AM
No such luck.
ap#test aaa group rad_eap cmclaine password legacy
Attempting authentication test to server-group rad_eap using radius
User authentication request was rejected by server.
ap#
*Mar 22 16:15:47.200: AAA: parse name=
*Mar 22 16:15:47.200: AAA/MEMORY: create_user (0x234A53C) user='cmclaine' ruser='NULL' ds0=0 port='' rem_addr='NULL' authen_type=ASCII service=LOGIN priv=1 initial_task_id='0', vrf= (id=0)
*Mar 22 16:15:47.201: RADIUS: Pick NAS IP for u=0x234A53C tableid=0 cfg_addr=10.10.100.10
*Mar 22 16:15:47.201: RADIUS: ustruct sharecount=1
*Mar 22 16:15:47.201: Radius: radius_port_info() success=0 radius_nas_port=1
*Mar 22 16:15:47.201: RADIUS(00000000): Send Access-Request to 10.10.11.200:1812 id 1645/10, len 60
*Mar 22 16:15:47.202: RADIUS: authenticator C7 AC 1E 9F D2 40 C3 FD - 30 34 DF 7D 7D 4C FD 9D
*Mar 22 16:15:47.202: RADIUS: NAS-IP-Address [4] 6 10.10.100.10
*Mar 22 16:15:47.202: RADIUS: NAS-Port-Type [61] 6 Async [0]
*Mar 22 16:15:47.202: RADIUS: User-Name [1] 10 "cmclaine"
*Mar 22 16:15:47.202: RADIUS: User-Password [2] 18 *
*Mar 22 16:15:47.206: RADIUS: Received from id 1645/10 10.10.11.200:1812, Access-Reject, len 20
*Mar 22 16:15:47.206: RADIUS: authenticator 3E A6 54 ED A5 6A BA D1 - 30 87 C9 B2 76 8F 0A BA
*Mar 22 16:15:47.206: RADIUS: saved authorization data for user 234A53C at 0
*Mar 22 16:15:47.207: AAA/MEMORY: free_user (0x234A53C) user='cmclaine' ruser='NULL' port='' rem_addr='NULL' authen_type=ASCII service=LOGIN priv=1 vrf= (id=0)
ap#u all
All possible debugging has been turned off
ap#test aaa group rad_eap cmclaine Password legacy
Attempting authentication test to server-group rad_eap using radius
User authentication request was rejected by server.
Should I be worrying about ethernet connectivity?
05-20-2012 05:25 AM
you should not because I do see access-reject coming back from radius server in the debugs.
*Mar 22 16:15:47.206: RADIUS: Received from id 1645/10 10.10.11.200:1812, Access-Reject, len 20
This indicates that the access-request parameters are not matching the network access policy parameters.
Did you check the NPS logs under event viewer under system and security tab.
Regards,
Jatin
05-20-2012 05:59 AM
I changed the logging no NPS even in Security but I am getting this.
An account was logged off.
Subject:
Security ID: SYSTEM
Account Name: SYRUS-DC$
Account Domain: SYRUSHCW
Logon ID: 0x2e6e05
Logon Type: 3
This event is generated when a logon session is destroyed. It may be positively correlated with a logon event using the Logon ID value. Logon IDs are only unique between reboots on the same computer.
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