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802.1X/NAC on a RAP wired interface

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  • 1.  802.1X/NAC on a RAP wired interface

    Posted Apr 19, 2021 02:58 PM
    I wanted to ask how this is typically deployed. Do you have to configured the RAP as a supplicant and if so, where is that done. I don't see that as an option under the provisioning screens. I configured one of the ETH ports to use the same AAA profile as my Corp WLAN which is 802.1X auth. Set the port to trusted and set the access vlan. 

    Anything else I am missing or other recommendations? What if we want to do full NAC where Clear Pass pushes the role and VLAN? Do I just enable downloadable roles from CPPM or is there more than that? Not sure if the CPPM side will need a new service or enforcement profiles or not.

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    Chris Watson
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  • 2.  RE: 802.1X/NAC on a RAP wired interface

    EMPLOYEE
    Posted Apr 21, 2021 02:09 PM
    here is the way I have done with .1x with RAP.   Since RAP is connected to  controller/gateway and not switches, so the clearPass DUR is not supported.  However, controller does support "user-role",  so the clearPass will authenticate and profile devices, then  send back the "user-role".  The controllers will enforce those roles.  Hope that give clues on how to do it.   I have some success with computer devices (windows, mac and linux),  having issues with printers (won't send over the x509 cert for eap-tls authentication)

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    Peter Huang
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  • 3.  RE: 802.1X/NAC on a RAP wired interface

    MVP
    Posted Apr 22, 2021 09:49 AM
    Actually ClearPass DOES support DUR on Mobility Controllers.  I am studying to renew my ACCP and the training class actually has us implement this.
    There need to be proper certificate trusts set up but is can be done.
    From the Lab:




    ------------------------------
    Bruce Osborne ACCP ACMP
    Liberty University

    The views expressed here are my personal views and not those of my employer
    ------------------------------



  • 4.  RE: 802.1X/NAC on a RAP wired interface

    EMPLOYEE
    Posted Apr 22, 2021 10:59 AM
    ClearPass will send the user-role and content down (if one marks the controller to download the role).   However, I could not get acl content honored by the controller,  let me try again and see if I miss something here.

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    Peter Huang
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  • 5.  RE: 802.1X/NAC on a RAP wired interface

    MVP
    Posted Apr 22, 2021 11:13 AM
    You need to define a CPPM Admin user with the DUR Role,
    Configure DUR Enforcement Profile & Policy
    CPPM needs to have a publicly signed HTTPS certificate

    Configure Authentication Server for DUR on the controller.
    Configure AAA Profile for DUR on the controller

    Did you complete all those steps?

    ------------------------------
    Bruce Osborne ACCP ACMP
    Liberty University

    The views expressed here are my personal views and not those of my employer
    ------------------------------



  • 6.  RE: 802.1X/NAC on a RAP wired interface

    EMPLOYEE
    Posted Apr 22, 2021 11:31 AM
    yes, I used to setup PKI service, so the certificate setup is not an issue.  my CPPM cert is signed by DigiCert

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    Peter Huang
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  • 7.  RE: 802.1X/NAC on a RAP wired interface

    MVP
    Posted Apr 22, 2021 11:38 AM
    I pulled that information from the training lab that works.

    Perhaps  @westcott has some troubleshooting hints.​

    ------------------------------
    Bruce Osborne ACCP ACMP
    Liberty University

    The views expressed here are my personal views and not those of my employer
    ------------------------------



  • 8.  RE: 802.1X/NAC on a RAP wired interface

    EMPLOYEE
    Posted Apr 22, 2021 01:37 PM
    yes and yes.  I have operated clearPass for a few years both in lab and production.   I have DUR working with switches in production.  this particular part is on RAP wired NAC.

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    Peter Huang
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  • 9.  RE: 802.1X/NAC on a RAP wired interface

    MVP
    Posted Apr 22, 2021 01:42 PM
    It the RAP in full tunnel mode? I think you would need full tunnel for that.

    ------------------------------
    Bruce Osborne ACCP ACMP
    Liberty University

    The views expressed here are my personal views and not those of my employer
    ------------------------------



  • 10.  RE: 802.1X/NAC on a RAP wired interface

    MVP
    Posted Apr 22, 2021 01:32 PM
    You entered the CPPM username & password in the mobility controller auth server entry?


    In the AAA proflie you checked the box?




    ------------------------------
    Bruce Osborne ACCP ACMP
    Liberty University

    The views expressed here are my personal views and not those of my employer
    ------------------------------



  • 11.  RE: 802.1X/NAC on a RAP wired interface

    Posted Apr 22, 2021 02:03 PM
    Can I check whether the clearpass https cert HAS to be a publicly signed one?

    I’ve always used them in the past but now am in a position where a private cert issued by s local CA authority is probably mandatory

    When using DUR on a switch, the switch downloads the CA from clearpass. If youve got the pki CA on the controller won’t that server just as well ?

    Rgds
    Alex




  • 12.  RE: 802.1X/NAC on a RAP wired interface

    MVP
    Posted Apr 22, 2021 02:28 PM
    The training said for DUR it needed to be a publicly trusted certificate I wonder if you can import the certificate chain onto the controllers so they trust.
    Currently here, our RADIUS certificate is a totally private CA. Our HTTPS certificate is a GlobalSign Non-public certificate chain that allows us to do a 5 year certificate for internal use.

    We do not use DUR and do not plan on using them. In my opinion managing role configuration in the AOS8 configuration hierarchy is more suitable for a larger, complex enterprise.

    ------------------------------
    Bruce Osborne ACCP ACMP
    Liberty University

    The views expressed here are my personal views and not those of my employer
    ------------------------------



  • 13.  RE: 802.1X/NAC on a RAP wired interface

    MVP
    Posted Apr 23, 2021 07:59 AM
    One other piece I took for granted. The servers need to both have accurate date/time. Time skew can break DUR.

    ------------------------------
    Bruce Osborne ACCP ACMP
    Liberty University

    The views expressed here are my personal views and not those of my employer
    ------------------------------



  • 14.  RE: 802.1X/NAC on a RAP wired interface

    MVP
    Posted Apr 23, 2021 04:22 PM
    I just passed my re-certification exam for ACCP so i decided to test DUR with a non-public certificate for HTTPs on ClearPass.

    I entered the root & intermediate CAs into the controller at trusted CAs and DUR works,






    ------------------------------
    Bruce Osborne ACCP ACMP
    Liberty University

    The views expressed here are my personal views and not those of my employer
    ------------------------------



  • 15.  RE: 802.1X/NAC on a RAP wired interface

    Posted Apr 23, 2021 05:16 PM
    Thanks for the confirmation
    Rgds
    Aalex




  • 16.  RE: 802.1X/NAC on a RAP wired interface

    EMPLOYEE
    Posted Apr 26, 2021 07:26 AM
    Looks like the discussion moved to a DUR discussion without answering the initial quesiton.

    Do you have controller APs or Instant APs?
    Do you want to have 802.1X enabled on the RAP uplink port? Or on a (R)AP wired port where you connect a wired device?

    For a device connected to eth1/2/3 etc, that needs to be authenticated, you need to set an ethernet port profile with the proper AAA configured. Then you need to make the port UNtrusted to enable the 802.1X authenticator on the port (where the device connecting would have the supplicant). Making a port trusted disables all authentication, an untrusted port will perform authentication.

    If you want your AP to be a supplicant and authenticate to a wired switch port that has 802.1X enabled, then you need to configure uplink authentication.

    Please let us know what it is exactly that you want to configure, and what are the open answers?

    ------------------------------
    Herman Robers
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    If you have urgent issues, always contact your Aruba partner, distributor, or Aruba TAC Support. Check https://www.arubanetworks.com/support-services/contact-support/ for how to contact Aruba TAC. Any opinions expressed here are solely my own and not necessarily that of Hewlett Packard Enterprise or Aruba Networks.
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  • 17.  RE: 802.1X/NAC on a RAP wired interface

    Posted May 18, 2021 02:22 PM
    Thanks everyone for the input. It was all very helpful. Herman to answer your question, my goal is to use the RAP's wired port to authenticate devices via 802.1X. Our network security team would prefer if we can do a NAC type deployment where it will assign a role/VLAN assignment to the device based on the device type. So like a laptop or similar device that connects to the wired port would get put in VLAN 100, a phone in VLAN 101 or a printer in VLAN 102 etc. All would authenticate via Clear Pass on the back end.

    I have it working now with just basic 802.1X authentication. If the client device has a trusted domain cert then it can get on and works just fine, but there is no custom VLAN assignments, just goes into the corp user VLAN.

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    Chris Watson
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