SecretDNS 4.0.1 Update

The SecretDNS (4.0.1) has been updated.

• By using the Recommended Options, you can enjoy a smoother experience by whitelisting only the necessary sites.

• Only the SNI strings are fragmented to minimize speed reduction.
• Only specified domains can perform SNI fragmentation and DNS functions.
• Use DNS servers without changing Windows settings.
• Easily check the domains you have accessed.
• Can be used in conjunction with proxy features.
• Available for use without installation.

Homepage

• SecretDNS: https://secretdns.kilho.net

Recommended Options

1. DNS Settings – Encryption (DOH)
2. SNI Settings – Fragmentation (Custom)
3. Whitelist – Enter domains to bypass

History

• Version 4.0.1 (2026/08/25)
  - Fixed an issue where the internet was not available immediately after booting on some PCs
  - Improved connectivity issues after sleep, VPN, and Wi-Fi changes
  - Added automatic recovery feature during internet outages
  - Improved DNS connection issues on Windows and some sites
  - Improved display of connection waiting and recovery status
  
• Version 4.0.0 (2026/08/24)
  - Enhanced connection speed, stability, and privacy protection by allowing direct DNS processing without separate programs
  - New encrypted DNS connections support safer internet connectivity
  - Separated DNS and site access settings for more consistent connections across various network environments
  - Redesigned access history screen for easier tracking of DNS and per-site application results
  - Fixed phenomena where DNS response failures and connection drops occurred in some network environments
  - Resolved intermittent stability issues that could arise during quick starts or shutdowns of the program
  - Fixed connection problems that could occur in proxy-use environments and when the program fails to start
  - Fixed occurrences where some logs remained or connection results were incorrectly displayed when access history was off
  - Optimized the program by removing unnecessary DNS-related settings and features
  
• Version 3.9.3 (2026/07/30)
  - Improved compatibility for playing YouTube and Google videos
  - Addressed connectivity issues occurring in some IPv6 network environments
  - Prevented unexpected shutdowns due to abnormal server responses
  - Enhanced processing stability for Chrome settings
  
• Version 3.9.2 (2026/07/07)
  - Added new disguise packet options for stronger responses to blocking environments
  - Improved connection success rate and stability in some networks
  - Applied the latest bypass methods for enhanced compatibility in various environments
  - Made it easy to turn on and off disguise packet features in settings
  
• Version 3.9.1 (2026/06/12)
  - Applied fragmentation extension features to all internet environments, including KT internet users
  - Changed default to have fragmentation extension features activated upon new installations
  

Related Links

• Update Guide: https://kilho.net/archives/notice/2940
• iPhone Bypass: https://gnu.kilho.net/tiptech/1330

License

• SecretDNS is freeware.
• You can use it freely without space restrictions, whether at home, in companies, public offices, or schools.
• It can be freely distributed anywhere.

Download

• Download from Kilho.net
• Download for Android

Frequently Asked Questions (FAQ)

• Why is it good to use the recommended options?
  You can easily utilize features like DNS tampering prevention and SNI eavesdropping bypass while maintaining speed and security.
• Does the SNI fragmentation feature reduce speed?
  No. This program has only fragmented the SNI strings to minimize speed reduction.
• Does the DNS setting change the Windows system settings?
  No. It uses its own DNS settings (DNS over HTTPS) without changing Windows settings, providing stability and safety.
• What should I do if a specific site cannot be accessed?
  You can minimize access issues by setting up a whitelist or specific domain list.
• Can I use it without installation?
  Yes. There is a portable version available, allowing you to use it without the installation process.