SecretDNS 3.8.9 Update

Update

• Improved handling of shutdown and restart issues on certain systems
• Enhanced stability by reducing delays and handling edge cases on some PCs
• Improved overall stability and reliability

• Only specified domains can perform SNI fragmentation.
• Secure your DNS with DNS over HTTPS.
• The ability to bypass SNI eavesdropping (HTTP/HTTPS) is included.
• Fragmentation of only the SNI string to minimize slowdown.
• Minimize access problems through whitelisting.
• It is used by specifying a DNS server through packet bypass without changing Windows settings.
• You can easily check the information of the accessed site.

• Using Recommended Options lets you add exceptions for only the sites you need, for a smoother experience.

Website

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

Recommended Options

1. DNS settings – Encryption (DoH)
2. SNI settings – Fragmentation (specify manually)
3. Specified list – Enter the domains to apply

History

• Version 3.8.8 (2026/04/06)
  • Improved handling to prevent conflicts caused by faulty behavior in Fasoo DRM
  • Added many commonly used domains to the whitelist for smoother connectivity
  • Improved whitelist handling and configuration flow
  • Separated user list and default list for more stable structure
  • Enhanced compatibility across various environments
• Version 3.8.7 (2026/03/17)
  • Refined internal structure for smoother start and stop behavior
  • Improved handling of exception/custom domain lists while running
  • Improved network operation stability
• Version 3.8.6 (2026/02/25)
  • Improved internal flow for initial launch and settings loading
• Version 3.8.5 (2026/02/05)
  • Improved stability when internet information lookup fails
  • Added fragmentation extension support for LG network users

License

• SecretDNS is freeware.
• You can use it freely at work, at home, in government offices, at school, and anywhere else.
• You may freely distribute it anywhere.

Download

Frequently Asked Questions (FAQ)

• Why should I use the Recommended Options?
  They let you easily use features such as DNS tampering protection and SNI eavesdropping protection while maintaining both speed and security.
• Does the SNI fragmentation feature reduce speed?
  No. This program fragments only the SNI string, minimizing any impact on speed.
• Do the DNS settings change Windows system settings?
  No. They use their own DNS settings (DNS over HTTPS) without changing Windows settings, making them stable and secure.
• What should I do if I can’t access a particular site?
  You can minimize access issues by configuring a whitelist or a list of specified domains.
• Can I use it without installing it?
  Yes. A portable version is available, so you can use it right away without installation.

Related Links

• Update information: https://blog.kilho.net/archives/notice/2940
• iPhone settings: https://forum.kilho.net/tiptech/1330