ISE v1.4. Question of MAB

Hello to everyone.

I'm quite new with ISE and need help. I'm stuck with Mac Authentication Bypass configuration in my lab environment. So, here's my problem.

I have a laptop that is connected to a switch port. I have the port of the switch configuration for MAB.

When the port is for the first time, MAB authentication is unsuccessful, because I have no identity configured in my ISE Server (Administration-> identity-> endpoints is empty). And it is an expected behavior.

But after authentication fails, I can see that the identity for my laptop AUTOMATICALLY appears in the Administration section-> identity-> endpoints. Then, when I do the close/no.-stop on the switchport the second time, successfully passed the authentication of MAB. I want to avoid this kind of behavior. So the question is, why after authentication attempts my phone appears in the section of the endpoint identities?

Please, see some attachments.

I appreciate any help, thanks.

Don't be confused that it performs authentication, it is supposed to. Every endpoint that attempt to authenticate, will have their mac address created in the database internal endpoints. However do not granted access, unless you have an authorization policy that is not created precisely enough. Usually, if you wan't actually use mab to something, you create a group of endpoint as "printers" and then have an allow rule that corresponds to the Wired_MAB State composed, and identity group "printers", and if your background rule is DenyAccess, access will be allowed only mac addresses in 'printers '.

Tags: Cisco Security

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    The question I have is my authentication of devices as shown test passes by the newspaper, but never shows up in the internal identity store. Other devices authenticate and appear in the identity store, where I can remove them that force the web authentication process runs again. I have just a device that seems to be in the identity store, but is not visible and cannot be deleted, which means that the device always goes wireless MAB and gains access to the network.

    ISE is version 1.4 with the latest patch applied, WLCs is an external controller 8510 and anchor 5508 comments, the two 8.0.120 running

    Someone at - it ideas? I guess that the MAC address is a database somewhere that needs to be cleaned up somehow, but I can't find any documentation on how to do it. ISE has been restarted, but no change.

    Thank you

    James

    Strange, it looks like ISE is to find the MAC on the shop of endpoint, which is where it should be, there is no other places where this mac address must be found. You say he isn't here, but is this client redirected to the login page of comments? If so, can you connect with a guest account?

    If this isn't there, you should be able to create it manually, if it is actually there, you should get an error message. Could you try that?

  • VLAN voice ISE with MAB

    Hi all

    I just configured the ISE and the switch to make authentication for my phones of vlan voice.

    Authentication and authorization works well with ISE.

    #show TEST-CONTACT authentication sessions

    Interface MAC address method field status Fg Session ID
    Item in gi1/0/1 001a.e867.4c1a mab VOICE Auth 0A0B1050000000250136CED3

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    The question is, why vlan 1? is it good?

    I have only the VLANs voice 316 configured policy result with the VLAN TAG = 316 and permission of field voice check box selected.

    SWITCH-TEST mac address-table interface gigabitEthernet 0/1/1 #show

    Mac address table
    -------------------------------------------

    VLAN Mac Address Type Ports
    ----    -----------       --------    -----
    316 001a.e867.4c1a STATIC item in gi1/0/1
    1 001a.e867.4c1a STATIC item in gi1/0/1

    Thank you

    Rafael

    I would recommend that you keep the command ' switchport voice vlan "because it is what allows the port to be a port" multi - vlan "without set it up as a trunk. If you remove this command and you always want to spend two VLANS (one per voice) and other data, then you will need to configure the port as 'trunk '. Unfortunately, it won't only 802. 1 x is not supported on the trunk ports :)

    I hope this helps!

    Thank you for evaluating useful messages!

  • Search for host ISE MAB - PAP or EAP - MD5

    In the docs, it is said that MAB uses PAP/ASCII or EAP - MD5 for the MAC as a username / password.

    In the configuration of the attached, MAB talking place successfully from an iPhone, without going through PAP or EAP - MD5 enabled as allowed protocols.

    Is the "host search" under the allowed protocols, provides the MAC address to be spent in PAP / EAP - MD5, even if these two protocols are not enabled below in the section Configuring authentication protocols?

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    Thank you.

    Cath.

    Hello Cath-

    Question #1: Yes, I think you're right. I think that the "host search" is kind of 'Protocol', used to treat the MAB. If you look at the top of the authentication session of do you by virtue of the ' authentication protocol? My guess is that you see "Lookup" (see screenshot)

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    interface fa0/1

    MAB eap

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    2) because the MAC address is sent in clear text "Attribute 31" (Calling-Station-Id), MAB EAP offers additional security by encrypting the MAC address in the password

    3) because the service for MAB EAP type is identical to a request from IEEE 802. 1 X, RADIUS server will not be able to easily differentiate requests for MAB EAP requests IEEE 802. 1 X

    This 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

    I hope this helps...

    Thanks for the note!

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