Operation and limitations

Compatible SSL VPN clients

  • SN SSL VPN Client, in its most recent 3.x version. SN SSL VPN Client is compatible with 64-bit Windows 8.1, 64-bit Windows 10 and 64-bit Windows 11,

  • OpenVPN Connect, compatible with Windows, macOS, Linux, iOS and Android. Refer to the OpenVPN website for more information,

  • SN VPN Client Standard, in its most recent 6.x version. SN VPN Client Standard is compatible with Windows 10 and Windows 11 with a 64-bit Intel processor. For more information on how to configure and use this client, refer to the SN VPN Client Standard User guide.

Maximum number of SSL VPN tunnels allowed on SNS firewalls

This number varies according to the SNS firewall model used. You can find this information on the Stormshield website, under All our products > Network security.

Specific characteristics of Stormshield SSL VPN clients

Automatic connection mode

SN SSL VPN Client has an automatic connection mode in which it can securely retrieve its SSL VPN configuration. This mode operates as follows:

  • During the initial connection in Automatic mode:

    • The SN SSL VPN Client authenticates the first time on the SNS firewall and automatically retrieves its SSL VPN configuration,

    • The SN SSL VPN Client authenticates a second time on the SNS firewall to set up the SSL VPN tunnel.

  • During subsequent connections:

    • If there are no new SSL VPN configurations, the SN SSL VPN Client authenticates on the SNS firewall to set up the VPN tunnel,

    • If a new SSL VPN configuration is available, SN SSL VPN Client must authenticate again, in the same way as for an initial connection, to retrieve the new configuration.

SN SSL VPN Client also has a manual connection mode in which the SSL VPN configuration must be manually integrated. Do note that OpenVPN Connect has only one manual connection mode.

Running scripts

The SN SSL VPN Client can run scripts on the user's workstation (Windows only) every time an SSL VPN tunnel is opened or closed.

Multifactor authentication methods compatible with the SN SSL VPN Client

This table lists the compatible multifactor authentication methods according to the version installed on the SNS firewall and the connection mode that the SN SSL VPN Client uses.

SNS version Connection mode used by the SN SSL VPN Client Password + OTP OTP only Push mode TOTP
4.5 or higher All modes
4.3 and 4.4 All modes
3.x, 4.2 or below Automatic mode
Manual mode

The SN SSL VPN Client's connection modes are: Automatic mode (with or without address book) and manual mode.