You will need the following to perform the operations described in this technical note:

  • An SNS firewall in version 3.x or 4.x on which the maximum number of SSL VPN tunnels allowed is compatible with your environment (see tables below),

  • Workstations or mobile devices equipped with a supported SSL VPN client:

    • SN SSL VPN Client in its latest 3.x version: 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 operating systems. Refer to the OpenVPN website for more information,

    • SN VPN Client Standard: 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.

  • If you use multifactor authentication (MFA), an MFA solution and a RADIUS server have already been configured so that you can link your SNS firewall to your MFA solution.

Maximum number of SSL VPN tunnels allowed on firewalls

Physical SNS firewalls


Virtual firewalls EVA



SN210(W), SN310

SN510, SNi20, SNi40 100
SN710, SN910 150
SN2000 200
SN2100 400
SN1100, SN3000, SN3100, SN6000, SN6100 500
EVA1 100
EVA2 150
EVA3 200
EVA4 250
EVAU 500

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 mode that the SN SSL VPN Client uses:

SNS version Mode used by SN SSL VPN Client Compatible multifactor authentication methods
4.3 and upwards Automatic mode
  • Password + OTP
  • OTP only
  • Push mode
Manual mode
3.x, 4.2 and below Automatic mode
  • Not compatible
Manual mode
  • Password + OTP
  • OTP only