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Fortinet NSE 4 - FortiOS 7.6 Administrator NSE4_FGT_AD-7.6 · Domain 5: VPN

Troubleshooting: `diagnose vpn ike gateway list`, `diagnose vpn tunnel list`, `diagnose debug application ike -1`

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Last reviewed September 25, 2026 · Leer en español

When an IPsec tunnel will not come up or passes no traffic, three CLI tools cover almost every case: one shows phase 1 status, one shows phase 2/tunnel status, and one shows the live negotiation. Knowing which to use for which symptom is the practical VPN-troubleshooting skill the exam rewards.

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