SecretDNS 3.8.1 Update

The SecretDNS (3.8.1) has been updated.

• Recommended Options allow you to smoothly use the service with only necessary sites excluded.

• Minimizes speed degradation by only fragmenting the SNI strings.
• Only specified domains can use SNI fragmentation and DNS functions.
• Use DNS servers without changing Windows settings.
• Easily check the domains you are connected to.
• Can be used in conjunction 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 (Manual)
3. Specify List – Enter domains to bypass

History

• Version 3.8.1 (2025/11/14)
  - Fixed the program to not crash with temporary DNS server errors
  - Improved network stability to enhance overall connection quality.
  
• Version 3.8.0 (2025/10/25)
  - Fixed connection errors to some sites due to improvements in SNI processing
  - Automatic application of fragmentation expansion for SK internet users
  
• Version 3.7.9 (2025/10/21)
  - Improved stability in some ISP environments through better SNI handling
  - Enhanced compatibility and transmission stability with fragmentation expansion
  - Improved connection speed by adjusting the order of data transmission
  
• Version 3.7.8 (2025/10/20)
  - Bug fixes and stability improvements
  
• Version 3.7.7 (2025/10/16)
  - Improved stability and compatibility through better network packet handling
  

Related Links

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

License

• SecretDNS is Freeware.
• You can use it without restriction in places like companies, homes, public institutions, and schools.
• It can be freely distributed anywhere.

Download

• Download from Kilho.net

Frequently Asked Questions (FAQ)

• Why are recommended options useful?
  They allow you to easily utilize features like preventing DNS spoofing and bypassing SNI monitoring while ensuring both speed and security.
• Does the SNI fragmentation feature slow down the connection?
  No. This program only fragments the SNI strings to minimize speed degradation.
• Will DNS settings change the Windows system settings?
  No. It uses its own DNS settings (DNS over HTTPS) without altering Windows settings, ensuring reliability and safety.
• What should I do if a specific site is not accessible?
  You can minimize access issues by setting a whitelist or a specified domain list.
• Can it be used without installation?
  Yes. It is available in a portable version, so you can use it immediately without any installation process.