SecretDNS 4.1.2 Update

Update

• Restored the program and its previous running state after graphics errors on some systems
• Fixed the program closing when launched again immediately after startup
• Added a setting to minimize to the tray when closing
• Added support for Windows 7/8.1 and earlier Windows 10 versions

• 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.

• With Recommended Options, you can add exceptions for only the sites you need and enjoy a smooth experience.

Website

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

Recommended Options

1. DNS Settings – Encryption (DOH)
2. SNI Settings – Fragmentation (Custom)
3. Specified List – Enter the domains to apply

History

• Version 4.1.0 (2026/10/15)
  • Improved connection stability through refined connection handling and response validation
  • Reduced initial connection delays for websites using QUIC
  • Fixed downloads or connection handling stalling while using the proxy on affected systems
  • Fixed address lookups incorrectly accepting responses to earlier requests
  • Added an alert when startup settings cannot be changed and prevented incorrect setting status from being displayed
• Version 4.0.6 (2026/10/10)
  • Changed existing options to reset to defaults once when updating
  • Prevented updates from overwriting user-configured DNS lists
• Version 4.0.5 (2026/09/15)
  • Improved VPN stability with automatic server switching
  • Made VPN activity easier to identify in connection history
• Version 4.0.4 (2026/09/14)
  • Improved the update process and automatic startup reliability
  • Redesigned Proxy Mix completely for more stable connections
  • Added an easy way to choose and edit websites that use Proxy Mix
  • Added saving of Proxy Mix preferences between app launches
  • Added options to add and select your preferred DNS servers
  • Improved encrypted DNS connectivity in some network environments
  • Added domain address support and a new Cloudflare endpoint
  • Added clearer guidance for selecting another server when encrypted DNS fails
  • Made DNS settings easier to understand and use
  • Simplified connection status messages for better clarity

License

• SecretDNS is freeware.
• You can use it freely in any setting, including offices, homes, government offices, and schools.
• You may freely distribute it anywhere.

Download

Frequently Asked Questions (FAQ)

• Why should I use Recommended Options?
  They make it easy to use features such as DNS spoofing prevention and SNI eavesdropping prevention, while maintaining both speed and security.
• Does the SNI fragmentation feature slow things down?
  No. This program fragments only the SNI string, minimizing any slowdown.
• Does changing the DNS settings modify Windows system settings?
  No. It uses its own DNS settings (DNS over HTTPS) without changing Windows settings, providing a stable and secure connection.
• How can I fix access issues with a specific site?
  You can minimize connection 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 Notice: https://kilho.net/archives/notice/2940
• iPhone Setup: https://kilho.net/forum/tiptech/1330