Technical Note: SSL VPN error: SSL_accept failed, 1:unknown protocol
Description
Solution
In FortiOS v5.4.x, tlsv1-0 is set to disabled by default.
This will prevent a successful connection from Windows 7 or 8.
This will prevent a successful connection from Windows 7 or 8.
Solution
tlsv1-0 should be set to enable in the ssl vpn settings:
set tlsv1-0 enable
