Firmware SNS V4.X

The latest version of SNS firmware

Strengthen your network security with SNS V4.5 & V4.6

Increase access security easily and cost-effectively with embedded two-factor authentication in SNS v4.5. And get peace of mind with the new option that provides optimal antivirus protection built into the antivirus engine of Stormshield Network Security appliances in the version 4.6 of SNS.

Increase the security of your authenticated access

  • Two-factor authentication to reinforce user and administrator access
  • Time-based one-time password (TOTP), suitable for disconnected environments
  • Simple, fast implementation at no extra cost

increase the security of your industrial network

  • DPI analysis of the S7+ protocol
  • Improvement of the OPC-DA protocol control: filtering of functions according to their read or write action

Incredible performance
with SNS v4.x firmware

SNS V4.X Firmware
is also


SPNEGO authentication for Windows Server 2019

Two-factor authentication

Multi-host authentication over SSH

Radius server configuration for better compatibility with MFA solutions

Enhanced VPN security

Increase VPN security

Secured storage TPM module used in SN3100

Redesign of proxy mechanism

Simplified DCERPC plugin

Refresh of the SSHD configuration

Export an identity or a certificate

Time-based one-time password (TOTP)


SD-WAN: automatic, real-time optimisation of Internet connectivity

IPS analysis of TLS 1.3 and RDP over UDP protocols

DPI analysis of the S7+ protocol

Monitoring of throughput per VLAN

Control the messages with network segmentation

MAC address filtering

Support of ARPING

Optimised update of cluster

Responsive design of captive portal

Supervision of Wifi interfaces


Capturing network packets via the UI for troubleshooting

Modern, clear and streamlined interface

More synthetic dashboard

Faster visualization of logs

Diagnostics operations

Separate configuration and monitoring

Navigation with context conservation

New panel of certificates management

Deep Packet Inspection (DPI)

Keep in touch

For further information

What’s new in SNS V4.5

  • Strengthen your network security
  • Increase the security of your authenticated access
  • Increase the security of your industrial network (S7+ & OPC-DA protocols)

What’s new in SNS V4.4

  • Improve the quality of your communications while rationalizing the cost of your Internet links
  • Optimize Web applications in real time
  • Benefit enhanced DPI analysis of IEC61850-MMS protocol

What’s new in SNS V4.3

  • Ensure better quality of service (QoS) for your different uses
  • Improve the quality of communications for your critical applications
  • Optimize your overall link management strategy

What’s new in SNS V4.2

  • Enhanced overall security
  • General hardening of the embedded SNS firmware
  • Increased resistance against attacks attempting to exploit the firewall itself
  • Securing VPN links (reinforced IPsec VPN mode, aligned with the IPsec DR reference defined by the ANSSI)
  • Secured TLS 1.3 flows

What’s new in SNS V4.1

  • Significantly optimised HA failover time
  • DPI analysis of IEC 61850 protocols (MMS, Goose and SV)
  • Replacement of the ISP’s router by supporting additional DHCP options

What’s new in SNS V4.0

  • Support the growth of your network
  • Optimise your administration task
  • Optimise diagnostics with improved Monitoring and Configuration workflow
  • Manage network settings easily
  • Filter traffic by MAC address
  • Protect Profinet industrial environments
  • Increase VPN Security