Description | This article describes how to troubleshoot the status of the TACACS+ server connected via IPsec VPN is showing 'Server unreachable'. |
Scope | FortiGate. |
Solution |
Assume below are the scenario:
FortiGate LAN IP (192.168.10.99) --- IPSEC --- TACACS+ server (192.168.5.6) Local subnet: 192.168.10.0/24 Remote subnet: 192.168.5.0/24
The TACACS+ server that hosts the remote side is 192.168.5.6. FortiGate on the local side had configured the primary server and the connection status is showing 'Server unreachable'.
To solve the issue, configure source-IP under the TACACS+ server setting:
After configuring the source IP, check the status again on GUI and it will show 'OK'.
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