Troubleshooting Tip: VPN SSL disconnects on multi-homed FortiGate

[adavila]

Description
This article is a quick reference to resolve a disconnection issue with VPN SSL in tunnel mode using multiple interfaces with multiple default routes

Solution

This issue occurs in environments with 2 or more interfaces configured with SSL VPN and internet access.

For example:
- The FortiGate has interfaces wan1 and wan2 connected to Internet.
- SSL VPN needs to respond to SSL requests from the same interface

# config vpn ssl settings
#     set route-source-interface enable
# end

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