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Need help setting up Duo Security for 2FA with Meraki MX84 VPN
We are currently using a Meraki MX84 for VPN. It connects to our Active Directory to authenticate users.
I am setting up a Duo Authentication Proxy to tie into my Meraki MX84 so I can have Multi-Factor Authentication on my VPN. The Duo Auth Proxy is asking for a Radius Secret from the Meraki. I am not sure where to setup the connection on the Meraki side. Am I setting up sign in with my Radius Server under Access control?
I am setting up a Duo Authentication Proxy to tie into my Meraki MX84 so I can have Multi-Factor Authentication on my VPN. The Duo Auth Proxy is asking for a Radius Secret from the Meraki. I am not sure where to setup the connection on the Meraki side. Am I setting up sign in with my Radius Server under Access control?
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The RADIUS servers and secrets are set up under the Client VPN section of the portal. Screenshot is attached. If you've been authenticating directly against Active Directory, your authentication may not be set up for RADIUS and so the secret field will be hidden.
Screen-Shot-2018-12-11-at-2.54.59-PM.png
Screen-Shot-2018-12-11-at-2.54.59-PM.png
Thanks Jody.
So when I add the Radius Server Host, Port and Secret there will my VPN clients stop working instantly or will they still be able to connect while I troubleshoot the integration with Duo?
So when I add the Radius Server Host, Port and Secret there will my VPN clients stop working instantly or will they still be able to connect while I troubleshoot the integration with Duo?
They won't stop working instantly, but new connections won't be able to establish while you're troubleshooting. If possible, I would set an after-hours window for testing, just so you don't have angry users.
Thanks Jody. I will setup a maintenance window and give it a shot. Have you done this with the Duo 2 factor? If so, anything I should watch out for?
I've got it running in a few places. It's fairly simple. I just set up the remote access policy in Microsoft NPS on the DC, register the LAN IPv4 address of the DC as a client with a shared secret, then install the Duo Authentication Proxy on the same DC, using port 1814/udp and point it to the LAN IPv4 address of the DC on port 1812/udp with the same shared secret. That keeps everything self-contained. Once that's set up, point the MX at the LAN IPv4 address of the DC on 1814/udp and you're good.
I am a bit confused Jody. I thought the Duo Authentication Proxy acted as the Radius Server and talked to Active Directory. Wouldn't this negate the need for Microsoft NPS?
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