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  • How it Works
    Zero Trust by design
    How it Works
    Direct Native Access (DNA)
    Direct Tunnel Access (DTA)
    Clientless Tunnel Access (CTA)
    Clientless IP Tunnel

    Create a Zero Trust network without VPN Tunneling

    Clientless Serial Tunnel

    Establish a Serial (RS232) connection without borders

    Offline File Transfer

    Transfer files without exposing endpoints to the internet

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    Best-practice Guide for Secure 3rd party remote access in OT
    OT Cybersecurity Landscape: Denmark 2027
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BifrostConnect
  • How it Works
    Zero Trust by design
    How it Works
    Direct Native Access (DNA)
    Direct Tunnel Access (DTA)
    Clientless Tunnel Access (CTA)
    Clientless IP Tunnel
    Clientless Serial Tunnel
    Offline File Transfer
  • Who We Help
    Cybersecurity & Compliance
    Engineering & Commissioning
    Operations
    Industries
    Energy & Utilities
    Water Management
    Vandværker
    Industrial Automation & Manufacturing
    Pharma, Life Science & Healthcare
    Testing, Inspection & Certification
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    Banking & Financial Services
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  • Pricing
  • Support
  • OT Cybersecurity
    OT Cybersecurity Landscape: Denmark 2027
    Best-practice Guide for Secure 3rd party remote access in OT
    NIS2 Remote Access WHITE PAPER
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Getting Started

12
  • Admin
    • Set up your organization
    • User roles and permissions
  • Onsite User Guides
    • Onsite Step Guide
    • Connect KVM
    • Connect IP Tunnel
    • Connect Offline File Transfer
    • Connect USB Tunnel
    • Connect Serial Tunnel
    • Connect SSH
    • Connect Serial Terminal (Console Access)
  • Datasheets
    • Technical Specifications
    • Requirements

Technical Support

2
  • Feedback & Feature requests
    • Share your ideas and feedback
  • Report a bug
    • Reporting Bugs 

Release Notes

21
  • 2026
    • Remote Access Interface Release 25 June 2026
    • Direct Tunnel Release 1 June 2026
    • Bifrost Release 13 January 2026
  • 2025
    • Bifrost Release 30 Oktober 2025
    • Bifrost Release 19 August 2025
    • Bifrost Release 30 June 2025
    • Bifrost Release 11 February 2025
  • 2024
    • Bifrost Release 04 December 2024
    • Bifrost Release 16 November 2024
    • Bifrost Release 2 Oktober 2024
    • Bifrost Release 14 August 2024
    • Bifrost Release 7 May 2024
    • BifrostConnect Firmware V4.8.0
  • 2023
    • BifrostConnect Firmware V4.7.0
    • BifrostConnect Firmware V4.6.0
    • BifrostConnect Firmware V4.5.0
    • BifrostConnect Firmware V4.4.0
  • 2022
    • BifrostConnect Firmware V.4.3.2
    • BifrostConnect Firmware V.4.3.1
    • BifrostConnect Firmware V.4.2.0
  • 2021
    • BifrostConnect Firmware V.4.0.0

Best Practice Guide

14
  • About this guide
  • Core Framework
  • Architecture & Principles
  • Threat Context
  • Zero Standing Privilege
  • Four OT Access Patterns
  • Degraded Mode & Legacy Equipment
  • Defence in Depth
  • Compliance & Implementation
  • Residual Risks
  • Definitions
  • References
  • Operational Lifecycle 
  • Procurement Appendix

Implementing the OT Best Practice Framework with BifrostConnect

6
  • Overview and Framework Mapping
  • Threat Model
  • Scenario Implementation – Scenario 1
  • Scenario Implementation – Scenario 2
  • Scenario Implementation – Scenario 3
  • Scenario Implementation – Scenario 4
  • Home
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  • Release Notes
  • 2024
  • BifrostConnect Firmware V4.8.0
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BifrostConnect Firmware V4.8.0

Release Version

BifrostConnect Firmware v4.8.0

Release Date

16 January 2024

New features
  1. Support for Offline File Transfer
  2. Support for more serial settings when using Serial Tunnel
4G
  1. Fixed situations where 4G had trouble connecting
  2. Improved connection speed
WiFi
  1. Fixed issue where WiFi would lose connectivity after longer idle periods
  2. Fixed issue where WiFi would not connect properly again when roaming between AP’s
  3. Fixed bug where unit had to be rebooted again after firmware update to reconnect to WiFi
  4. Fixed issue where unit was scanning WiFi while WiFi was disabled
Ethernet
  1. Fixed issue where Ethernet interface would restart while connected to 4G
Stability
  1. Fixed rare issue where Bifrost unit freezes after longer idle periods
UX/UI
  1. Improved UX on Bifrost unit when connecting to WiFi
Miscellaneous
  1. Fixed issue where some information was not shown in web UI during high latency sessions
  2. Fixed bug where IP address would not show up in web UI during tunnel sessions when unit was connected to 4G or WiFi
  3. Security patches
Updated on June 12, 2024
Bifrost Release 7 May 2024Bifrost Release 04 December 2024
Table of Contents
  • Release Version
  • Release Date
  • New features
  • 4G
  • WiFi
  • Ethernet
  • Stability
  • UX/UI
  • Miscellaneous
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