FortiGate IKEv2 VPN with Microsoft NPS, Active Directory and FortiToken MFA
Build an AD-backed IKEv2 remote-access VPN with Microsoft NPS/RADIUS, mandatory FortiToken MFA, and least-privilege access policies based on AD group membership.
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FortinetBuild an AD-backed IKEv2 remote-access VPN with Microsoft NPS/RADIUS, mandatory FortiToken MFA, and least-privilege access policies based on AD group membership.
Configure a FortiGate IKEv2 dial-up VPN using LDAP-backed AD groups, FortiClient EAP-TTLS and least-privilege firewall access.
Diagnose an IKEv2 connection failure after importing a sanitized FortiClient XML profile that omits the pre-shared key.
Use FortiGate debug flow to trace how traffic is processed, routed, NATed, accepted, or denied by FortiOS.
Capture and inspect packets directly on a FortiGate to determine whether traffic enters, exits, or crosses expected interfaces.
Inspect FortiGate IPsec tunnel security associations, selectors, state, and packet counters from the CLI.
Use FortiGate ping and ping-options to test IP reachability with controlled source, interface, timeout, packet size, and SD-WAN behaviour.
Display the active FortiGate routing table and interpret connected, static, dynamic, and default routes during connectivity troubleshooting.
Display the FortiGate ARP table to map IPv4 addresses to learned MAC addresses and interfaces during local-network troubleshooting.
Systematically troubleshoot a FortiGate IPsec tunnel that is established but does not carry the expected application or subnet traffic.
Recover a FortiGate that loses LAN connectivity after a firmware jump by booting its working backup partition from the serial console and then following the verified upgrade path.
Troubleshoot FortiToken enrollment emails that time out on SMTP TCP/465 when FortiGate local-out traffic uses an unsuitable WAN source address.
Configure and verify a FortiGate dial-up IKEv2 VPN using local users, EAP-MSCHAPv2, FortiToken Mobile, and the free FortiClient VPN.