ISE, MAB issue
I'm working with the following lab:
ISE 1.1.3.124
3560 running c3560-ipservicesk9-mz.122-55.SE
Cisco AP (1131, 1231).
I'm attempting MAB. The AP is being profiled correctly and I'm seeing successful authen and authz. But the device (AP/whatever) cannot pickup a DHCP address. If I manually assign an IP, then no traffic flows through the switchport. DHCP works fine for ports with no security. The DACL is being applied and should permit the traffic - I've even tried a permit ip any any.
I've attached the switch config and some ISE screenshots / logs.
Some further details below.
Thanks to anyone if you can nudge me in the right direction.
## switch dot1x debug
%MAB-5-SUCCESS: Authentication successful for client (001b.2abc.5de0) on Interface Fa0/2 AuditSessionID C0A863FE000001392E8FE236
3560-1#
%EPM-6-POLICY_REQ: IP 0.0.0.0| MAC 001b.2abc.5de0| AuditSessionID C0A863FE000001392E8FE236| AUTHTYPE DOT1X| EVENT APPLY
%EPM-6-AAA: POLICY xACSACLx-IP-LAB2-WLC-ONLY-5160b7f6| EVENT DOWNLOAD-REQUEST
%EPM-6-AAA: POLICY xACSACLx-IP-LAB2-WLC-ONLY-5160b7f6| EVENT DOWNLOAD-SUCCESS
%EPM-6-IPEVENT: IP 0.0.0.0| MAC 001b.2abc.5de0| AuditSessionID C0A863FE000001392E8FE236| AUTHTYPE DOT1X| EVENT IP-WAIT
%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/2, changed state to up
3560-1#
%AUTHMGR-5-SUCCESS: Authorization succeeded for client (001b.2abc.5de0) on Interface Fa0/2 AuditSessionID C0A863FE000001392E8FE236
3560-1#sh authentication sessions int fa0/2
Interface: FastEthernet0/2
MAC Address: 001b.2abc.5de0
IP Address: Unknown
User-Name: 00-1B-2A-BC-5D-E0
Status: Authz Success
Domain: DATA
Security Policy: Should Secure
Security Status: Unsecure
Oper host mode: single-host
Oper control dir: both
Authorized By: Authentication Server
Vlan Group: N/A
ACS ACL: xACSACLx-IP-LAB2-WLC-ONLY-5160b7f6
Session timeout: N/A
Idle timeout: N/A
Common Session ID: C0A863FE000001392E8FE236
Acct Session ID: 0x00000180
Handle: 0xFC000139
Runnable methods list:
Method State
dot1x Failed over
mab Authc Success
3560-1#sh authentication method mab
Interface MAC Address Method Domain Status Session ID
Fa0/2 001b.2abc.5de0 mab DATA Authz Success C0A863FE000001392E8FE236
3560-1#sh ip access-lists
Standard IP access list 10
10 permit 192.168.99.10 (9814 matches)
20 deny any log
Extended IP access list ACL_DEFAULT
10 permit udp any eq bootpc any eq bootps (71 matches)
20 permit udp any any eq domain
30 permit icmp any any
40 permit udp any any eq tftp
50 permit ip any host 192.168.99.10
60 deny ip any any log
Extended IP access list ACL_REDIRECT
10 deny udp any eq bootpc any eq bootps
20 deny udp any any eq domain
30 deny ip any host 192.168.99.10
40 permit tcp any any eq www
50 deny ip any any
Extended IP access list xACSACLx-IP-LAB2-WLC-ONLY-5160b7f6 (per-user)
10 permit udp any eq bootpc any eq bootps
20 permit udp any any eq domain
30 permit ip any host 192.168.99.224
40 deny ip any any log
It is nice to see that you find the resolution the command “ip dncp snooping trust” Validates DHCP messages received from untrusted sources and filters out invalid messages.
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Hi dears,
I deployed the ISE primary and secondary mode. Then I did deregister the secondary ISE at Primary ISE. Now i want to register the same second ISE as secondary mode on Primary ISE. but this error occur:
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Administration: Secondary
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version 1.20.8xx of both ISE's
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This switch is running 15.0(2)SE
Authentication Session command does not show a phone, only a workstation:
NFF-Cat2960S-off#sh authen sess int gi1/0/13
Interface: GigabitEthernet1/0/13
MAC Address: 082e.5f86.4345
IP Address: 192.168.1.111
User-Name: <removed>
Status: Authz Success
Domain: DATA
Oper host mode: multi-auth
Oper control dir: both
Authorized By: Authentication Server
Vlan Policy: 10
ACS ACL: xACSACLx-IP-ACL-PERMITALL-50bfa391
Session timeout: 14400s (server), Remaining: 14353s
Timeout action: Reauthenticate
Idle timeout: N/A
Common Session ID: C0A8011600000F4AFC60371C
Acct Session ID: 0x000010D5
Handle: 0xD6000F4B
Runnable methods list:
Method State
dot1x Authc Success
mab Not run
CAM shows the phone as connected and communicating (even after a shut/noshut):
NFF-Cat2960S-off#sh mac add int gi1/0/13
Mac Address Table
Vlan Mac Address Type Ports
10 082e.5f86.4345 STATIC Gi1/0/13
10 e804.6212.9903 DYNAMIC Gi1/0/13
20 e804.6212.9903 DYNAMIC Gi1/0/13
Total Mac Addresses for this criterion: 3
Interface Configuration: (same as others on this switch and others)
interface GigabitEthernet1/0/13
switchport access vlan 10
switchport mode access
switchport nonegotiate
switchport voice vlan 20
ip access-group ACL-DEFAULT in
srr-queue bandwidth share 1 30 35 5
priority-queue out
authentication event fail action next-method
authentication event server dead action reinitialize vlan 10
authentication event server dead action authorize voice
authentication host-mode multi-auth
authentication open
authentication order dot1x mab
authentication priority dot1x mab
authentication port-control auto
authentication periodic
authentication timer reauthenticate server
authentication violation restrict
mab
mls qos trust device cisco-phone
mls qos trust cos
dot1x pae authenticator
dot1x timeout tx-period 10
auto qos voip cisco-phone
spanning-tree portfast
service-policy input AUTOQOS-SRND4-CISCOPHONE-POLICY
end
Phone has DHCP, but traffic is being blocked by ACL-DEFAULT, as the switch is not
performing MAB to download a more permissive dACL:
Jan 2 15:21:10.365 EST: %SEC-6-IPACCESSLOGP: list ACL-DEFAULT denied tcp
192.168.20.77(49858) -> 192.168.20.5(2000), 1 packet
Finally, the switch is reporting that MAB on this port is in an ACQUIRING state, even though the MACs are discovered:
MAB details for GigabitEthernet1/0/13
Mac-Auth-Bypass = Enabled
MAB Client List
Client MAC = Waiting
Session ID = C0A8011600000FB006D7DCEA
MAB SM state = ACQUIRING
Authen Status = FAILHi,
Just out of curiosity can you post your port configuration.
Thanks.
Sent from Cisco Technical Support Android App -
ISE MAB Host Lookup - PAP or EAP-MD5
In the docs, it says that MAB uses PAP/ASCII or EAP-MD5 to pass the MAC as username / password.
In the attached setup, MAB is talking place successfully for an iPhone, without having PAP or EAP-MD5 enabled as Allowed Protocols.
Is the "Host Lookup" under allowed protocols, provides for the MAC address to be passed in PAP / EAP-MD5 even if these two protocols are not enabled below under the Authentication Protocols section of the configuration?
How could we dictate to our switch to start using EAP-MD5 to pass the MAC? If you look at the attached authentication details output, it lists in the AV Pair a EAP-Key. Is that it?
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Cath.Hello Cath-
Question #1: Yes, I think you are correct. I believe that the "Host Lookup" is type of "protocol" used to process the MAB. If you look at the top of the authenticaiton session what do you under "Authentication Protocol?" My guess is that you see "Lookup" (see attached screen shot)
Question #2: You can force the switch to use EAP-MD5 by appending "EAP" to the "MAB" command under the individual ports:
interface fa0/1
mab eap
Things to conisider:
1) If you make that change the default/built-in condition in ISE "Wired-MAB" will have to be changed since the
service-type radius attribute will change from "Call Check" to "Framed." Thus, your MAB devices can easily skip the MAB authenticaiton rule and be denied on the network
2) Because the MAC address is sent in the clear text "Attribute 31" (Calling-Station-Id), MAB EAP does not offer any additional security by encrypting the MAC address in the password
3) Because the service type for MAB EAP is the same as an IEEE 802.1X request, the RADIUS server will not be able to easily differentiate MAB EAP requests from IEEE 802.1X requests
Here is a good document that you can reference as well:
http://www.cisco.com/en/US/prod/collateral/iosswrel/ps6537/ps6586/ps6638/config_guide_c17-663759.html
Hope this helps...
Thank you for rating! -
ISE : MAB, SoA ...
Hello,
I'd like to implement Cisco ISE on my network so that 802.1x authentication will be operationnal.
When I give a look to this document : http://www.cisco.com/en/US/docs/security/ise/1.0.4/compatibility/ise104_sdt.html#wp55038
There's a lot of Catalyst 2950 on my network and I see that some features aren't supported on these devices : MAB, dACL, SGA.
What are the consequences of these non-supported technologies ? I've found out for instance that MAB was used to authenticate devices which doesnt allow or support 802.1x, so will the printers of my network still work ?
And what about dACL and SGA ? Are these features really useful or isn't it that bad if I can't use them ?
Thanks.If you want to manage your limited investment you can follow a phased implementation approach. Though it would be little laborious. You can swap 2950 switches with 2960 or 3750 wherever you have devices like printers. So you can connect your printers on either 2960 or 3750 switches only and PCs on 2950 switches. Then setup flexauth (MAB > dot1x) order and priority as required, on those switches where printers etc are connected. Jatin Katyal has righly suggested, I agree with him
With this approach, you can setup and enable all other features i.e. profiling, client provisioning, CoA for certain identity groups which are connected on supported switches (2960, 3750)
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My understanding is that I need the MS CA Root Cert and Subordinate Cert on the Admin node with the subordinate cert ticked for trust for EAP Auth. Is there a requirement for a Server Authentication certificate on the Admin Node? Going forward with that Is there a requirement to add a server authentication certificate to the PSN Nodes?
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Converting from global to local filesystem
Hi all, I have a 2-node cluster running Sun Cluster 3.2 in which multiple file systems are currently marked as global file systems (ie the file systems are visible from both nodes and they all have the "global" keyword in /etc/vfstab). I've been requ