Duo rras nps Optionally you can disable the unused protocols in RRAS. Phone number: Receive a one-time passcode in an SMS message or approve a login attempt with a phone call from Duo. It's SSTP using RRAS with NPS. Jan 28, 2022 · The Duo for RRAS integration supports append mode (concatenation), so for a user to authenticate via SMS they should enter password,sms in the password field: Two-Factor Authentication for Microsoft RRAS VPN connections | Duo Security. Buy or Renew. It synced a newley created group just fine. Jan 19, 2022 · We are using a Microsoft RRAS server (2019) with DUO MFA for VPN. Aug 25, 2017 · Click Yes to restart RRAS. When creating a VPN connection, setting Authentication method in the Security tab in the VPN’s adapter properties to PAP will change “Type of sign-in info” in the VPN connection properties to “General authentication method” from “User name and password”. Jan 2, 2021 · Server 2019 VPN Server with RRAS + NAP + DUO Proxy; DUO config - I have tried several approaches Radius client, AD client, both, etc. Jan 3, 2021 · RRAS + NPS functional without DUO DUO Security using this guide. Feb 19, 2025 · Current configs/considerations Peplink Router DUO Auth Proxy NPS RRAS Windows 11 Pro Built-in VPN Client Type: SSTP Users connect to VPN, can traverse internal file share and on-prem applications I would like to configure SSTP Force Tunnel VPN with Restrictions. I have followed the instructions but when i get Change the RRAS Authentication Setting Mar 30, 2020 · REFERENCES -Certify The Web (Windows Server ACME SSL Client)https://docs. I had to go to the old local NPS, open the policy from NPS console, write down all settings and then replicate them in the central NPS store. 1). Duo helps you reduce risks by setting and enforcing policies and app access. The server used SSTP. 5. Here are the screenshots that will help anyone get it working. Looks like with RADIUS selected the NPS policies are ignored. Yes, MS-CHAPv2 authentication from RRAS/NPS to the Duo Authentication Proxy instead of PAP is supported when the Duo proxy uses the following configuration: Client section: radius_client Server section: radius_server_auto or radius_server_challenge Feb 2, 2023 · Hi, I have a Windows Server 2016 Standard running the Duo Authentication Proxy, we currently protect Microsoft 365 with SSO, RD Gateway and Windows Logon, the next step is for us to protect the VPN Microsoft RRAS. Yeah, the sound of silence here is deafening. Feb 24, 2021 · Windows 10 1903 build 18362. If I would of had these pictures, it would have saved me weeks. Any Peplink users out there that have successfully integrated DUO 2FA? WeiMing January 3, 2021, Feb 26, 2018 · Our RRAS server is installed on Server 2016 as is the NPS server (separate boxes) Our VPN clients are connecting via IKEv2 tunnel deployed via SCCM. It is possible to configure RRAS/NPS to authenticate against multiple different incoming trust chains and use separate identity certificates depending on the trust chain the client tries to authenticate with. Weird - its odd it was working and then just stopped. All users have been enabled to use MFA when logging into Office 365 For example: [radius_client] host=192. Looking to enable DUO with our SSL VPN as well. i’ve seen SSTP and that seems tobe the way togo based on ease of setup and compatibility on public networks. Apr 6, 2017 · In case anybody else finds this, I figured it out. Once this is done, the login attempt will fail — the user should log in again with one of the new passcodes. One problem with the DUO setup is it breaks network policies on the RRAS server. In the Shared Secret dialog box, enter a shared secret, and then select OK. 87 is being accepted on the NPS server as apart of the authorization policy - then everything seems to work quite nicely. When connecting to the VPN using the Duo proxy as a RAS, I get no network access over the VPN. Is it possible to set up IKEv2/IPSec using windows RRAS (preferably MSCHAPv2 for username/password login)? I currently have a server setup that works perfectly and would use L2TP if the option was still enabled since mine is set up with radius/duo 2fa auth. 3. About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright Restart the Duo Authentication Proxy service to apply the changes. When I set the “User Groups” with the specified security groups containing allowed users they can connect without issue but when I attempt to also add “Machine Groups” to the policy Duo Mobile is an app that runs on iOS and Android phones and tablets. KB FAQ: A Duo Security Knowledge Base Article Apr 12, 2024 · If NPS is listening for incoming requests on port 1812, then the Duo proxy must use a different port. 171) in Remote RADIUS Server Groups, you can create a dedicated group, or just put the server in the built-in Microsoft Routing and Remote Access Service Authentication Servers. We are using a Microsoft RRAS server (2019) with DUO MFA for VPN. We have user VPN setup and working tied to AD. Each RADIUS client is then configured on both NPSs. Most end-users do not have local You can remove Duo Two-Factor Authentication for Microsoft RRAS VPN connections with the following steps: Remove the Duo RADIUS server from RRAS/NPS and configure an alternate authentication mechanism such as "Windows Authentication" or an alternate RADIUS server. We are wanting to protect SSTP VPN on a Windows server with DUO. 2 was disabled. On VPN server i don’t see any logs about this connection. 1 build 5340 Backend Information RRAS + NPS + DUO Auth Proxy VLAN dedicated to VPN DHCP block Using Windows 11 Built-in VPN client What have others done to enable split-Tunneling on the Balance 305 when not using PepVPN? VPN connections are required for some internal resources and a file share. May 20, 2018 · By the way we didn’t have to do anything with Windows Network Policy Server NPS. Network Placement and Configuration. Two virtual NICs are used, one for company network, and one attached to a public IP. Apr 15, 2015 · I have Windows Server 2012 R2 up and running with RRAS (SSTP VPN) and I want to use NPS network policies to set the conditions that only specified users and specified computers can log on to the network. Thanks Apr 28, 2020 · Next, you have to configure RRAS to use RADIUS, a. On the RRAS Server I switched to RADIUS Authentification, added Apr 6, 2022 · We don’t recommend colocating the Duo proxy with NPS or the DC role, but if you must then you will need to make sure the Duo proxy uses a different port for RADIUS than NPS does. Security key: Tap a WebAuthn/FIDO2 security key. Add the following to the registry on the RAS/NPS server to enable NTLMv2 for RAS/NPS. 1. a. Duo pushes login requests to Duo Mobile when you have mobile data or wifi connectivity to the internet. The issue was tracked down to one of the two domain controllers having a more recent version of Samba4 (linux domain controller). I’ve tried all sorts of combinations of client and server protocol settings. May 6, 2025 · If you cannot connect to the RRAS VPN with Rublon enabled and you have both the Rublon Authentication Proxy and RRAS deployed on the same server, try changing the IP address in both the RRAS VPN configuration and the Rublon Authentication Proxy configuration file to the same local IP address: 127. Nov 11, 2016 · i deployed Duo for the RRAS. Dec 29, 2023 · An NPS extension dynamic link library (DLL) that is installed on the NPS server rejected the connection request Henrik Larsson 0 Reputation points 2023-12-29T11:17:37. Currently i have working solution where radius client connects to Windows NPS Radius server and get authenticated. Mar 24, 2024 · Windows RRAS for VPN access Windows Radius Server NPS for users authentication Duo Authentication Proxy for 2FA. Could we have 2 RRAS l2tp servers running in the same domain/network? If so are there any items besides setting up a second server just like the first? Are there any possible conflicts that can occur between the two? Thank you Apr 21, 2020 · The instructions on the duo website does not take into account NPS. It appears onl To authenticate from the Duo Proxy to Active Directory as a RADIUS client, you can deploy Microsoft's Network Policy Server (NPS) as a RADIUS server or a RADIUS server from another vendor between Active Directory and the Duo Authentication Proxy, and add the Duo Proxy server as a client of the NPS server. Jun 19, 2018 · Hi all I am trying to setup a duo proxy to add 2fa to our rras server. Problem: even though the timeout setting is 90 seconds on the VPN server, the VPN connection fails if you don't respond to MFA push message in 15 seconds. NPS Server connects to Active Directory Domain Services (AD DS) to perform the primary authentication for the RADIUS requests and, upon success, passes the request to any installed extensions. This integration uses an existing NPS server installed on a domain controller that also contains the Duo Security Authentication Proxy. On Duo Proxy server i see successful authentication. Jun 25, 2018 · Common causes of RADIUS client authentication from the Duo proxy to NPS are that the Duo proxy wasn’t added to NPS as a RADIUS client correctly, or an encryption mismatch between the Duo proxy and NPS. The server has been very reliable over the years. Jun 22, 2021 · Many users have reported connection stability issues using Windows Server 2019 Routing and Remote Access Service (RRAS) and the IKEv2 VPN protocol. duosecurity. Configure a RADIUS Connection Request in NPS. Plan NPS configuration. With an entry now in place for the RRAS Server on our Network Policy Server, we can Duo helps you reduce risks by setting and enforcing policies and app access. cfg. Giannis Restart the Duo Authentication Proxy service to apply the changes. I have ports 443 open in/out on all relevant devices; Test device: Windows 10, Built-In VPN client Oct 3, 2022 · Hi @Marcel , . At the same time, other VPN connections may work without issue. Duo Splunk Connector Pull Duo logs in to Splunk with an open-source utility API; Duo Ready Partner List Learn more about integrations created by our partners Other Applications; Unix & SSH; Duo Unix Duo MFA PAM module for SSH and console logins Unix & SSH; SDK & API References; Duo Security on GitHub Duo API clients and Web SDK resources API So long as the 'MS VPN root CA gen 1' public cert is trusted by the NPS server and CRL's are disabled (on the NPS ) and EKU 1. msc) om de policies te controleren. Did something change? Either something was changed or there is a bug with RRAS. basically, i want access from win7 machines (my work PC, and a few laptops) using a mapped drive. If you must co-locate the Duo Authentication Proxy with these services, be prepared to resolve potential LDAP or RADIUS port conflicts between the Duo Yes, MS-CHAPv2 authentication from RRAS/NPS to the Duo Authentication Proxy instead of PAP is supported when the Duo proxy uses the following configuration: Client section: radius_client; Server section: radius_server_auto or radius_server_challenge Jul 19, 2021 · RRAS is set to query the Duo Proxy server (192. XXX (I am assuming this is the KB FAQ: A Duo Security Knowledge Base Article. certifytheweb. May 15, 2025 · We do not recommend installing the Duo Authentication Proxy on the same Windows server that acts as your Active Directory domain controller or one with the Network Policy Server (NPS) role. radius_secret_1 - The secret key that you will specify in step 6; radius_ip_2 - IP address of your secondary Publishing Agent if you have any. I installed Duo Auth Proxy in new server and made the following config: [radius_client] host=RadiusSever secret=pass port=1812 pass_through_all Nov 28, 2017 · NPS configuration consists of three areas: RADIUS clients, connection request policies (CRPs), and network policies. This newer version has NTLMv1 and Lanman (LM) disabled by default, and so apparently the NPS server or the Ruckus wireless Hi All, I currently have a VM hosting RRAS and learned that the Remote Access role includes NPS. I was setting up DUO MFA with this, but after working with support decided to split out NPS to a separate VM to simplify the config. Does this hold water? Missing anything? [radius_client] host=XXX. Launch the NPS console if you haven't. KB FAQ: A Duo Security Knowledge Base Article. , “api-XXXXXXXX. Mar 13, 2018 · I ran into an issue trying to test Server 2012 r2 NPS as a radius server for a wifi network. Yes, the Duo Authentication Proxy can run on the same server as Microsoft TMG, RRAS, or UAG, so long as the address for the authentication server for the application (TMG, RRAS, UAG) is set to local loopback (127. Door binnen RRAS met rechts te klikken op Remote Access Logging kun je kiezen voor Launch NPS (nps. Mar 11, 2025 · To provide fault tolerance for RADIUS-based authentication and accounting, use at least two NPSs. In the Duo Admin Panel: In the left sidebar, navigate to Applications > Applications. Is there a way to export/import the CAP from gateway’s local store (NPS) to central NPS? Q3. You can remove Duo Two-Factor Authentication for Microsoft RRAS VPN connections with the following steps: . Sorry for the inconvenience caused. Note that the RRAS clients should still Nov 6, 2019 · The intention is to use RADIUS authentication for some appliance VPN connections (not RRAS). I Sep 19, 2019 · I can’t get DUO to trigger. Jul 14, 2021 · Ook al heb je geen NPS rol geïnstalleerd, kan er toch een NPS Policy dwars zitten. If you launch the NPS console, you will actually see these three items in order. A user can connect only for 1 sec and disconnect immediately. Community. Your NPS host computer account will be added to the built-in domain group RAS and IAS Servers. . I have ports 443 open in/out on all relevant devices; Test device: Windows 10, Built-In VPN client Jan 28, 2019 · Load balancing Windows Server Network Policy Servers (NPS) is straightforward in most deployment scenarios. The first thing I’d check is the RADIUS server timeout in RRAS, to ensure it is set to 60 seconds the lifetime of a Duo push request). Here is a copy of the NPS log I get when I try to SSH into the switch. Recently security policies have changed and I am unable to login as it says I am not authenticated. Click the IPv4 tab. In other words, if you configure the local NPS to log RADIUS accounting information to a local file or to a Microsoft SQL Server database, it will do so regardless of whether you configure a connection request policy to forward accounting messages to a remote RADIUS server group. com”); radius_ip_1 - IP address of your RAS Publishing Agent. SSTP VPN server with NPS as authentication server with timeout configured at 90 seconds. The Duo proxy final config file authproxy. Mar 25, 2024 · Thank you for your reply. Locate and then select the following registry subkey: HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\RemoteAccess\Policy New - DWORD Jan 3, 2021 · RRAS + NPS functional without DUO DUO Security using this guide. Step 1: Configure Hyper-V VM Internal Network Adapter First, on Mar 30, 2020 · About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright KB FAQ: A Duo Security Knowledge Base Article Oct 27, 2021 · I don’t think you can do this with Duo. In this deployment, the role of the NPS server will be filled by Windows Server 2019 running the Network Policy Server role. The server will be located behind the internal firewall on the internal network. <Event> <Timestamp data_type="4">12/14/2020 14:42:20 Jun 4, 2020 · The NPS Server. exe and, if you're prompted, select Run. I found it was a nightmare recreating the CAPs on central NPS (NPS console VS Gateway console/wizard). 10 votes, 37 comments. 207. Looking through the guides I can find it seems the NPS function on Windows Server is needed. My setup is: Server 2016 1903 update Feb 24, 2022 · Good morning, I was wondering if anyone has been able to get DUO protecting both Microsoft RDG and RRAS on the same Windows Server install? In order to install Microsoft RDG you need to install NPS on the server, with NPS installed the RADIUS authentication option for RRAS disappears. While the Duo Authentication Proxy supports Duo-only authentication over RADIUS (where the Duo proxy does not attempt primary credential verification and only performs two-factor auth), IIRC there isn’t an option in RRAS to chain local primary authentication (for your non-AD users) to external secondary authentication (like adding Duo for 2FA-only May 11, 2017 · Duo isn’t initiating spurious approval requests, it’s responding once to each of the four unique requests sent to it by RRAS/NPS (which in turn may indicate unique requests from the VPN client to RRAS). Sorry the commumity guidlines only a Apr 6, 2017 · Does anybody have some tips for troubleshooting 919 errors when trying to connect to MS RRAS using L2TP with PAP? My server is running Windows server 2012 R2 with RRAS and NPS installed, on the same box as the Duo proxy. Archived post. We’d like to keep the non-MFA server running for a bit until we’ve had a chance to get everyone connected to duo. Few things to try: Restart the service for RRAS Reboot server Remove and setup the RADIUS setting for RRAS again. You could find it in the list of Application to protect. But, SSTP VPN doesn’t work. 0. ; NPS: Configure the Network Policy for SSTP. true. If RRAS is running on the same server as NPS, then instead of following the timeout configuration process described in the Duo for RRAS documentation, the RADIUS timeout will have to be configured to 60 seconds through the NPS Load Balancing settings. If the upstream authenticator is an Active Directory (AD) or LDAP server, add the parameter in the radius_server_xxx section of authproxy. Configure VPN using Remote Access in Windows Server On the Add Roles and Features Wizard, click on Open the Getting Started Wizard link. DUO is typically deployed with a proxy server running on either Linux or Windows Server. First of all, make sure NPS has a RADIUS client which is the RRAS server. New comments cannot be posted and votes cannot be cast. Nov 4, 2019 · Still on the free tier for now, but testing everything before we roll out. NPS: I’m not entirely sure it’s necessary to put in the server name and secret, as RRAS will complain about this when NPS is running on the same server. Step by step guide explaining how to setup and configure a Azure VPN point to site gateway connection with RADIUS, NPS and Azure AD Multi Factor Authenticati 10 votes, 37 comments. I have not been able to find how can be achieved on the same server. Set up an 2016 RRAS server and have L2TP and SSTP working fine. Register the NPS Server in Active Directory. Duo Security Authentication Integration Once the NPS policy is added, the next step is to configure the VPN server for authentication on the newly installed RADIUS NPS server. If you Appendix: Using DUO MFA as a RADIUS Server for Remote Access VPN Authentication This guide can easily be adapted to use a third-party RADIUS server (in this case DUO). After Android removed support for L2TP I realized we needed to approach this in a different way. Specifically, we want to route all MS Mar 30, 2020 · About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright How can I use NPS with the Duo Authentication Proxy and RRAS when NTLM is disabled in my domain? KB FAQ: A Duo Security Knowledge Base Article Mar 9, 2023 • Knowledge Feb 17, 2025 · Router Information Peplink Balance 305 Product Code: BPL-305 Hardware Revision: 2 Firmware: 8. Most of the time the clients connect without an issue, however, sometimes clients get the message “The connection was prevented because of a policy configured on your RAS/VPN server. cfg looked like the following: ——————-[ad_client] For example: [radius_client] host=192. Mar 10, 2019 · When NPS and RRAS are installed on the same box RRAS defaults to (and I don’t believe can be disuaded from) leveraging NPS for AAA. Dec 15, 2020 · Greetings, I am running an NPS Server on my Windows Server 2019 of my network. When I set the “User Groups” with the specified security groups containing allowed users they can connect without issue but when I attempt to also add “Machine Groups” to the policy Nov 27, 2018 · Dear Richard, Thanks a lot for your suggestion but I finally found the root cause: it was on the client side configuration. Set up Duo per the instructions at Two-Factor Authentication for Microsoft RRAS VPN connections | Duo Security and when a user tries to connect, get this in the Mar 1, 2016 · Q2. For detailed information on how to install NPS, see Install Network Policy Server. Feb 21, 2019 · I’m trying to add duo to a RADIUS authentication process to a router client device. If the primary NPS becomes unavailable, RADIUS clients then send Access-Request messages to the alternate NPS. Are there any issues with have the DUO proxy service installed on the same server that hosts NPS and Active Directory (single DC environment for the moment). EN US. I use it to authenticate into my Cisco C9300 switches as an administrator to work on them. Intermittently the client could not authenticate. In NPS, I have the Duo Proxy server added as a Radius Client. 4. Works very well with L2TP\IPSec VPN. But no requests are getting that far. Select Add. Remove the Duo RADIUS server from RRAS/NPS and configure an alternate authentication mechanism such as "Windows Authentication" or an alternate RADIUS server. k. Company Android phones (managed via EZMDM) only issued to management and sales, about 16 people, myself included. I took a look at some solutions that would require a Linux server, and before spending too much time on tests I would like to know if you already implemented any. My test NPS configuration is as follows: > NPS enabled and registered > RADIUS client is created and defined as IP address of 'my_laptop' > Shared Secret is same as defined on client and server side > Vendor name is "RADIUS Standard" Duo Mobile: Approve Duo Push verification requests on iOS or Android devices, or generate a one-time passcode from the Duo Mobile app. I have implemented for testing purposes RRAS and DUO on one server and Radius NPS on another server. cfg . 124. 7. RRAS sits on a DC with NPS running. If I set it About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright Feb 8, 2019 · I have duo working with 2008 r2 RRAS for vpn access but I cannot figure out how to create a day/time restrictions and session timeout. Hopefully, it would be just like FB, whenever the RRAS detects a login from a new IP, it sends out a txt, or email, or asking for the 6-digit code like Reddit does. Duo recommends SSTP or L2TP, which encrypt communication between the client and the RRAS server. Mar 10, 2019 · Resolved. Next, you should have DualShield Radius server (192. 311. 70-ish W10 Pro desktop PCs without cams or mics. NPS Extension triggers a request to Microsoft Entra multifactor authentication for the secondary authentication. Jun 14, 2023 · Hello All, I am having real trouble getting Duo to work with RRAS VPN with NPS, I had it all working well with L2TP and the ad_client setting. Mar 4, 2025 · On the NPS server, double-click NpsExtnForAzureMfaInstaller. Once you forward requests to the DUO proxy it bypasses any network policies (NPS) like Idle Timeout, or IP restrictions, etc. We do not use a Cisco router - most documentation references Cisco and EAP with certificate. I did not describe correctly the implementation needed. Most VPN servers, including Windows Server Routing and Remote Access Service (RRAS) servers allow the administrator to configure multiple NPS servers for redundancy and scalability. If RRAS is running on the same server as NPS, then instead of following the timeout configuration process described in the Duo for RRAS documentation, the RADIUS timeout will have to be configured to 60 seconds through the NPS Load May 15, 2025 · We do not recommend installing the Duo Authentication Proxy on the same Windows server that acts as your Active Directory domain controller or one with the Network Policy Server (NPS) role. Feb 1, 2022 · @infologicit This appears to be a behavior specific to the Windows VPN client itself as other Community members have experienced the same thing (and appears to be an issue outside of Duo): RRAS NPS PAP - Windows 10 VPN Client Issue Authentication Proxy Hello mwalker100, We are experiencing this exa We are rolling out DUO, and plan on securing RDP with 2FA - but need to filter the VPN to only be able to connect to the RDP server and nothing else. Server #1 - DUO Proxy Installed Server #2 - Windows Server RRAS + NPS Here is a cleansed version of my config file. Nov 27, 2018 · Dear Richard, Thanks a lot for your suggestion but I finally found the root cause: it was on the client side configuration. Configure a RADIUS Network policy in NPS. Unfortunately I am having hell getting it to work with DUO. Video Series on Advance Networking with Windows Server 2019:In this video guide, I will explain how to set up a RADIUS server on Windows Server 2019 and get Nov 14, 2022 · Hello First time trying to setup Duo mfa. I think I’m almost there but I’m struggling with the final (hopefully) issue. So, if NPS is already using 1814 then change the [radius_server_auto] port value to something else, like port=1814 , and then in NPS update the RADIUS properties for KB FAQ: A Duo Security Knowledge Base Article. On NPS server (Windows Radius) i see successful authentication. Before you deploy NPS as a RADIUS proxy on your network, use the following guidelines to plan your deployment. Hope it helps someone. A Windows PPTP client will not negotiate MPPE (encryption) when PAP is used, meaning the password is sent from the client to the RRAS server as plain text. What is the purpose of your second DUO authentication - Connetion request Policy. Oct 3, 2022 · Hi @Marcel , . unless anyone knows otherwise, i’d like to Ensure that the RADIUS timeout in RRAS is configured to 60 seconds, as described in the Duo for RRAS documentation. I also enrolled my user. May 12, 2020 · Hi Wilsantiago, Also stuck with MSCHAPv2. Fill in the start IP address and end IP address and click OK twice. Server hosting SSTP had recently been prepared for PCI-DSS 3. May 2, 2019 · Hi, Unfortunately I’ve spent weeks trying to get Duo working for Microsoft RRAS SSTP VPN. In our case we will use a DUO proxy server running Windows Server 2012 R2. If the Duo Authentication Proxy is not being used for anything else, you can uninstall it. Turns out that even when NPS is installed it’s still necessary to enable PAP on the RRAS properties as well. I saw few 3rd party options like Duo, or SAASPASS. Any Peplink users out there that have successfully integrated DUO 2FA? WeiMing January 3, 2021, Jul 9, 2019 · I called support and spoke with them for weeks and they could not help me get MSCHAPv2 working with RRAS and NPS. For information about how to integrate Duo Security RADIUS Authentication without an NPS server, go to the Duo Security RADIUS Authentication Integration Guide. Sep 16, 2010 · I’ve recently got rid of my Readynas DUO NAS in favour of an atom 330 running 2008r2. XXX. 1 and somehow even TLS 1. 2. I've seen this same MFA question asked several times and the NPS Azure extension is often mentioned as the solution, but nobody ever mentions the caveat that it only works for Remote Desktop connections. The network policy in NPS has been set up to allow only PAP authentication. On the Duo portal we chose to protect Microsoft RRAS server. But other than logging an event, it doesn’t hurt anything, so following the instructions is safe. See the Duo Authentication Proxy Reference Guide for more details. Duo is ok but since most companies already gave office365 these days it is the most easy solution. you can also add it to vpns that run from RRAS easy. I need to implement on Windows Server 2019 the below: Windows RRAS for VPN access Windows Radius Server NPS for users authentication Duo Authentication Proxy for 2FA I have implemented for testing purposes RRAS and DU Oct 7, 2013 · Click OK to complete adding your RRAS Server as a RADIUS client. Select the Microsoft RRAS application. When you have no data service, you can generate passcodes with Duo Mobile for logging in to applications. 19 secret=Radius password pass_through_all=true port=1812 Make sure that the RADIUS server hosting NPS is configured to accept authentication requests from the Duo Authentication Proxy and that you have added the line pass_through_all=true to ensure that RADIUS group attributes are communicated during the login process. 6. Mar 4, 2025 · On the RD CAP Store tab, select Central server running NPS. For an object to even talk with your NPS server, it must first be in the RADIUS client list. Ensure that the RADIUS timeout in RRAS is configured to 60 seconds, as described in the Duo for RRAS documentation. In RRAS, I have configured L2TP to use a shared RRAS in the DMZ NPS (Radius) in the backend subnet Or does Azure VPN Gateways only support RRAS for S2S connections? We are attempting to connect Duo 2FA for the Windows P2S VPN connection, but Duo requires RRAS and Radius for this to work. In the NPS Extension For Microsoft Entra multifactor authentication Setup window, review the software license terms, select the I agree to the license terms and conditions check box, and then select Install. It had to be sending the NAS-IP-Address at some point and then stopped. May 15, 2025 · Note: Duo Security supports the use of PAP Authentication with PPTP, SSTP, and L2TP VPN. The AD machine account on the NPS server is given permission to read the properties Active Directory user accounts to authenticate users. Plan RADIUS clients. May 7, 2025 · On the server you want to be the NPS server, install the Network Policy and Access Services (NPS) role. com We want to roll this first as a test * Most employees will continue to use SSTP VPN as before; and a few of them use it with DUO * Later, we will add more employees to the list * Finally everyone will have to use DUO if they want to VPN in This will be managed by using Security Groups on the AD I need assistance setting this Look like MS doesn't have one native come with RRAS. This server should be domain-joined. It's fast and easy to use, and doesn't require cell services. I can connect to VPN but never hit DUO Proxy Server. Note that the RRAS clients should still May 2, 2025 · The following example configuration outlines how to configure an existing Windows 2008 server, running Network Policy Server (NPS) alongside Active Directory: Add the MX Security Appliance as a RADIUS client on the NPS server. The NPS server has the Azure MFA plugin configured. Jul 29, 2021 · When you deploy NPS as a RADIUS server, NPS performs authentication, authorization, and accounting for connection requests for the local domain and for domains that trust the local domain. Once the extension receives the response Mar 7, 2023 · We are deploying duo MFA with RRAS l2tp. Contents. Ensure you record this shared secret and Also, you can register your NPS server in Active Directory with a command: netsh ras add registeredserver. com/docs/introCertify The Web - Cloudflare DNS (Auto SSL certificate g To authenticate from the Authentication Proxy to Active Directory as a RADIUS client, you can deploy Microsoft's Network Policy Server (NPS) as a RADIUS server or a RADIUS server from another vendor between Active Directory and the Duo Authentication Proxy, and add the Duo Proxy server as a client of the NPS server. I would like to implement a free, open-source solution. Restart the RRAS service. But I have zero experience so I am looking for some. In order to increase the timeout settings for MFA on the NPS server, you need to go to Server Manager > Tools > Network Policy Server > In the NPS (Local) console, expand RADIUS Clients and Servers, and select Remote RADIUS Server > In the middle pane, go to SERVER GROUP Properties > Edit > Under the Load Balancing tab, configure these settings: Jan 2, 2021 · Server 2019 VPN Server with RRAS + NAP + DUO Proxy; DUO config - I have tried several approaches Radius client, AD client, both, etc. Our environment: On premise AD on W Server 2012 R2 std. It seems the request is never sent to the DUO side based on what I can tell. As I was testing on a single computer, I had forgotten to add the new NPS servers (3 and 4) on the client side settings (as I am testing, I configured the connection manually in the past and forgot on this part). To configure the Duo Authentication Proxy to work with the application when the Authentication Proxy is colocated with the NPS, create a [radius_server_auto] section in the Proxy configuration file. A quick overview of how the RD Gateway works with the NPS server to handle authentication and authorization for RDP users. throughput isnt a major concern, home ADSL is 4meg. My normal RADIUS implementation works fine, from my DUO auth proxy box (with it all turned off) I can ssh to the router using domain credentials, running a packet capture on the NPS I can see requests and responses and authentication succeeds. Changing RRAS from Windows Auth to RADIUS, pointed it to the Duo Proxy. If the upstream authenticator is a RADIUS server, like NPS, add the parameter in the radius_client section of authproxy. One NPS is used as the primary RADIUS server and the other is used as a backup. I’ve tried a bunch of different settings under “Authentication Methods”, but I can’t get any of them to work. Jul 29, 2021 · Connection request policy accounting settings function independent of the accounting configuration of the local NPS. If RRAS is running on the same server as NPS, then instead of following the timeout configuration process described in the Duo for RRAS documentation, the RADIUS timeout will have to be configured to 60 seconds through the NPS Load Howdy, We are setup with DUO using the proxy for AD (on-prem) logins. For information on how to register NPS Server in Active Directory, see Register an NPS in an Active Directory Domain. 9) as a Radius server under “Authentication Provider”. Requires Chrome, Safari, Firefox, or Edge. Jun 15, 2021 · Hi all, It appears that our insurance provider is going to hit us with a huge increase in rates unless we can show we have 2FA/MFA in place. When using the Duo Authentication Proxy between Microsoft Routing and Remote Access Server (RRAS) and Microsoft NPS, authentications start to fail while NTLM is disabled via the LmCompatibilityLevel settings on the authenticating DC. Specifically, there have been reports of random disconnects for which the connection cannot be re-established for an extended period. Controleer dat de gebruikers binnen active directory een “allow access” hebben op het Dial-in tabblad van hun account install NPS server role install azure aad nps module configure NPS for azure active directory and rds mfa will now be available when logging on with rds. In order to increase the timeout settings for MFA on the NPS server, you need to go to Server Manager > Tools > Network Policy Server > In the NPS (Local) console, expand RADIUS Clients and Servers, and select Remote RADIUS Server > In the middle pane, go to SERVER GROUP Properties > Edit > Under the Load Balancing tab, configure these settings: Ensure that the RADIUS timeout in RRAS is configured to 60 seconds, as described in the Duo for RRAS documentation. NPS had no role in this kind of setup. And what is that CLient IP pointing to? Apr 21, 2023 · Hi, I'd be happy to help you out with your question. In the Enter a name or IP address for the server running NPS field, type the IP address or server name of the server where you installed the NPS extension. 1 x FS VM with RRAS and NPS installed 1 x SQL VM with only SQL installed I purchased EMS licenses and applied them to all the users who are currently accessing the VPN from home The RRAS SSTP VPN is working perfectly without MFA so no issues. 9533333+00:00 Apr 15, 2015 · I have Windows Server 2012 R2 up and running with RRAS (SSTP VPN) and I want to use NPS network policies to set the conditions that only specified users and specified computers can log on to the network. Jul 1, 2016 · This How-to guides the admin through the process of setting up a basic PPTP or L2TP-PSK VPN server using RRAS on a Windows Server 2012 R2 virtual machine, using a NPS policy and Active Directory groups to dictate user access control to the VPN. If you need further assistance troubleshooting, consider contacting Duo Support. 168. Me: Thanks badgenes! Me: Aw shucks, you’re welcome To authenticate from the Duo Proxy to Active Directory as a RADIUS client, you can deploy Microsoft's Network Policy Server (NPS) as a RADIUS server or a RADIUS server from another vendor between Active Directory and the Duo Authentication Proxy, and add the Duo Proxy server as a client of the NPS server. Please let me know if you have an If so, then your RAS/NPS server is by default still only attempting communications utilizing NTLM and thus not working. So I installed the duo proxy on a fresh 2016 server, configured the conf file and setup AD sync. At this point RRAS should be configured properly. Sep 18, 2023 · ikey - Your Duo integration key; skey - Your Duo secret key; api_host - Your Duo API hostname (e. Nov 24, 2021 · Duo Proxy is all set up, and configuration verified with the connectivity tool. If you must co-locate the Duo Authentication Proxy with these services, be prepared to resolve potential LDAP or RADIUS port conflicts between the Duo You can remove Duo Two-Factor Authentication for Microsoft RRAS VPN connections with the following steps: . At this point I realize I need to RADIUS forward to the authproxy (running n a non-standard port) rather than deploy as the documentation illustrates. Duo MFA on Windows 2012 R2 RRAS server with NPS Amir_Jawaid. Click the radio button for Static address pool and click the Add button. g. nyox qnlgsr jmgga dlimoyb inzzkl vpkwk nzam jtqhtyr psqqneo ugxgyx