Radius Windows
Vinnie Frevert
FreeRADIUS is the most widely used RADIUS server in the world. It powers most major Internet Service Providers and Telecommunications companies world-wide and is one of the key technologies behind eduroam, the international Wi-Fi education roaming service. It is the RADIUS server used by all Cloud Identity providers and is embedded in products from network equipment vendors and token card manufacturers.
The FreeRADIUS product suite includes a server, radius client, development libraries, and numerous additional RADIUS and IP address-related utilities. It is fundamental to the working of the Internet around the world, and is responsible for authenticating hundreds of millions of users every day.
The FreeRADIUS project maintains the following components: a multi protocol policy server (radiusd) that implements RADIUS, DHCP, BFD, and ARP; a BSD licensed RADIUS client library; a RADIUS PAM library; and an Apache RADIUS module.
We provide a step-by-step guide to radiusd -X. The guide breaks down the different pieces of the debug output, and explains what they mean. Often you can just look for ERROR or WARNING to solve many problems.
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We have a working Windows 2012R2 NPS server running our wireless network at the moment and I want to add the juniper devices to it. EX4200 and EX2200 mostly. I have the following config changes successfully setup:
set system authentication-order [ radius password ]
set system radius-server 10.10.10.1 secret "XXXXXXXXXXxxxxxxxxXXXXXXXXXXX"
set system radius-server 10.10.10.1 timeout 3
set system radius-server 10.10.10.1 retry 3
set system radius-server 10.10.10.1 source-address 10.3.0.1
set system radius-options password-protocol mschap-v2
set system services ssh
set system login user SU class super-user
set system login user SU full-name "Default RADUIS admin access template"
set system login user OP class operator
set system login user OP full-name "Default RADUIS operater access template"
set system login user RO class read-only
set system login user RO full-name "Default RADUIS read-only access template"
Logs in the Radius server show full-access with successful login. PIng tests between all is good and no firewall/filters anywhere in this setup. We checked and triple checked the vendor code in the Radius setup. No joy.
Basically, from what I can tell at this point, everything is working but the switch is waiting for 'something' from the Windows Server and not getting it. Or not understanding it. Does anyone have a working Windows 2012R2 setup? I would like to compare the setup if possible.
I'm setting up a radius-based setup with our 5 AP-11's, which need to talk to our Windows Server 2016 which is our domain controller and where radius runs. For some reason, I have no luck authenticating in the right way.
Since version 7.0 authentication against our microsoft NPS radius servers is broken. Because the firewall now always first tries CHAP instead op PAP (see this article) and microsoft NPS always replies with a ACCESS-REJECT massage (see this article -> item 9).
NPS logs give an error (19): No reversibly encrypted password is stored for the user account. This means you should enable reversible encryption on you domain controllers with the policy setting "Store password using reversible encryption for all users in the domain" which is not something we can do.
The whole CHAP implementation in 7.0 is pretty silly. The failover only works half the time for the inital logins, it causes massive issues with Multi Factor Authentication solutions using RADIUS Challenge/Response, there's no tickbox to turn it off and completely baffling that CHAP, instead of MS-CHAPv2 is supported..
Added a new CLI operational command ( set authentication radius-auth-type ) to address an incompatibility issue between PAN-OS and some RADIUS servers. With this fix, you can manually override the automatic selection mechanism introduced with Challenge-Handshake Authentication Protocol (CHAP) support in PAN-OS 7.0 to select either CHAP or Password Authentication Protocol (PAP) as needed.
I am running bigip 11.4.1 on a 3900 that is licensed for LTM and ASM with client authentication.I am able to configure user authentication to a Windows NPS radius server and have all external users all get authenticated to the windows radius and authorized to the same default external user role. (This is purely for user login access to the BIG-IP managment interface via a browser).
I would now like to create four new Windows user groups: F5-Admin, F5-resource-admin, F5-operator, F5-guest.The goal is to have the Windows NPS radius server return the F5 vendor specific attribute "F5-LTM-User-Role" with the appropriate values for the four roles I need.
I have the document: " -us/solutions/public/14000/300/sol14324.html".It is not clear to me how to add the role attributes to windows 2008 NPS such that the new role attribute will be returned to the F5 after successful authentication.It is also not clear how to configure the F5 to then take the returned role attribute for the user and over-ride (ignore) the default external role setting.
Welcome back! As I posted last time, one of my latest projects has been to change all the login / enable passwords for our various Cisco routers & switches. I chose to go RADIUS + Server 2008 for that project and you can read more about that here.
Windows Server 2008 NPS Config
As before, the Windows Server 2008 NPS Config for RADIUS was a little tricky. The good news is that the "heavy lifting" was done when this was setup for Cisco / RADIUS. Let's get going.
Here's some useful info. Notice I started with the "Friendly name" of "Dell-" that will be important later. The shared secret is the same as I entered in the CLI above and they need to match. Click on the advanced tab.
Choose Cisco (Vendor) and Cisco-AV-Pair (Attribute) and click Add. Why do you do this? We're talking about Dell switches here. Well, this attribute is what is used by Dell switches to assign privilege level. Odd I know. Go with it. Click Add.
Open ADUC on your Server 2008 machine and create a new user with the username of $enab15$. Mine has the "friendly" name of Dell Enable. The password you give this account will match your "enable" password on the Dell CLI. I also made this user a member of the appropriate "Radius Admins" group mentioned above in the NPS setup.
Thanks for the great post.
FYI, I ran into an issue with my PowerConnect 6224, 3.3.13.1, VxWorks 6.5. The radius key length could only be 48 characters or shorter to a 2008R2 NPS. The radius server would accept the incoming request but kept saying the user failed authentication.
I` trying to configure DELL switches and everywhere is describe to use unsecure PAP for communication.
Is it possible to force secure communication and use ms-chap-v2 beetwen Dell powerConnect and radius server 2012R2?
In a corporate environment shared key encryption is rarely used due to the problems associated with distributing the appropriate keys. In the corporate wireless world many organisations prefer to use 802.1x or Radius authentication so that their users can log on to the wireless networks with their domain credentials.
I was recently asked to set up just s system with Unifi access points and controllers on Windows Server 2012 with Microsofts own Radius solution NPS (or Network Policy Server) and 802.1x. There is plenty of information out there but I found that some of it was out of date and others were missing some fairly key components. So I present this tutorial to hopefully helps others get this up and running as quickly as possible.
Hey,
Thank you for the great post. I am planning to implement RADIUS at my company and planning to follow this step by step.
My question to you, what about the mobile devices? Will it be able to connect easily?
I am kinda new to this, What can be done about the Guest WI-fi?
Any suggestions or help is appreciated
Thanks
Mobile devices should be fine as long as you have valid credentials. If you use a certificate based logon (in addition to the piece above) you will obviously need some method to push the certificate. But yes if you follow the tutorial above you should be fine.
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