SecretDNS 3.8.3 Update

SecretDNS (3.8.3) has been updated.

• Recommended Options allow you to smoothly use the service by excluding only the necessary sites.

• Fragmentation only occurs on the SNI string to minimize speed degradation.
• Only specified domains can utilize SNI fragmentation and DNS functionality.
• Use by specifying the DNS server without changing Windows settings.
• You can easily check the domains you are connected to.
• Can be used in combination with proxy functions.
• Available for use without installation.

Homepage

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

Recommended Options

1. DNS Settings - Encryption (DOH)
2. SNI Settings - Fragmentation (User-defined)
3. Designated List - Enter domains to bypass

History

• Version 3.8.3 (2025/12/27)
  - Improved the display method of the tray icon for enhanced display stability
  - Fixed duplicate storage issue with tray icon description
  
• Version 3.8.2 (2025/12/06)
  - Improved the bug where tray icons stack in Windows 11
  
• Version 3.8.1 (2025/11/14)
  - Modified to prevent program termination during temporary DNS server errors
  - Improved overall connection quality by enhancing network stability.
  
• Version 3.8.0 (2025/10/25)
  - Fixed access errors on certain sites due to improved SNI processing methods
  - Automatically applies fragmentation extension functionality for SK internet users
  
• Version 3.7.9 (2025/10/21)
  - Enhanced stability in some ISP environments due to improved SNI handling
  - Improved compatibility and transmission stability through fragmentation extension features
  - Adjusted data transmission order to improve access speed
  

Related Links

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

License

• SecretDNS is Freeware.
• You can use it freely without space restrictions in companies, homes, government offices, schools, etc.
• It can be freely distributed anywhere.

Download

• Download from Kilho.net

Frequently Asked Questions (FAQ)

• Why is it good to use the Recommended Options?
  You can easily utilize features like DNS spoofing prevention and SNI bypass while ensuring speed and security simultaneously.
• Does the SNI fragmentation feature degrade speed?
  No. This program minimizes speed degradation by fragmenting only the SNI string.
• Does the DNS setting change Windows system settings?
  No. It uses its own DNS settings (DNS over HTTPS) without changing Windows settings, ensuring stability and security.
• What can be done if a specific site cannot be accessed?
  You can minimize access issues by setting up a whitelist or a designated domain list.
• Can it be used without installation?
  Yes. A non-install version is available for immediate use without installation.