RADIUS connection interface IP

[chocolateeater]

Hi, everyone.

I'm trying to set up RADIUS authentication for FortiClient VPN connections towards two windows domain controllers. I have two of them - the BDC is on premise and the PDC is in AWS (connected through a VPN tunnel).

The connection towards the BDC is fine. This is the primary authentication server.

When trying to test the connection from the Fortigate towards the AWS instance, I see that the connection is made from the tunnel interface IP. The connection fails, because I have not created any routing and security group inbound rules for the interface IPs in AWS. Is there any way to make the Fortigate make the RADIUS request from the LAN interface IP? That would make the rules much simpler.

Regards,

Chocolate Eater

[abelio · Accepted solution]

Hello

Try with 'nas-ip'  and/or 'source ip' depending upon your needs.

I mean, with CLI:

config user radius
   set nas-ip  <ip_used_to_connect_to radius server , and Caller-Station_ID attribute>
....
  set source ip <ip_used_to_connect_to radius server>
...

end