i have just configured a L2tp/Ipsec with VPN Wizart (Remote Access-->Native-->Windows Native)
Vpn works but when the client disconnects the fortinet keeps saying it is up in Ipsec Monitor section ( attached img1)
Same things in Ipsec Tunnel section
Someone can help me?
You should turn on DPD (Dead Peer Detection) or/and NAT-Travrsal. This will allow the FGT to dectect the disconnection and close the tunnel.
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all clients are behind NAT and NAT-T is enable on FG.
DPD is already enabled
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