Before configuring Bitdefender VPN with DNS Over QUIC, ensure the following:
A valid Bitdefender VPN subscription is active.
The Bitdefender VPN application is installed and updated to the latest version.
The operating system is compatible with DNS Over QUIC.
Firewall settings allow UDP traffic on port 443.
Configuring DNS Over QUIC within Bitdefender VPN typically involves these steps:
Open the Bitdefender VPN application.
Navigate to the "Settings" or "Preferences" menu.
Look for a section related to "Protocols" or "Advanced Settings".
If available, select DNS Over QUIC as the preferred DNS resolution method.
Save the changes and restart the Bitdefender VPN application.
Note: The availability of DNS Over QUIC as an option depends on the specific version of Bitdefender VPN and the operating system. If the option is not directly available, alternative configuration methods may be required.
Proper firewall configuration is crucial for DNS Over QUIC to function correctly with Bitdefender VPN.
Ensure that your firewall allows outbound UDP traffic on port 443, as DNS Over QUIC uses this port.
If using a custom DNS server, verify that it supports DNS Over QUIC.
To confirm that Bitdefender VPN is successfully using DNS Over QUIC:
Connect to the Bitdefender VPN.
Use a DNS leak test website to check which DNS servers are being used.
If the test shows DNS servers associated with your ISP, DNS Over QUIC may not be configured correctly.
Use network monitoring tools to verify that DNS queries are being sent over UDP port 443.
Firewall blocking UDP port 443: Ensure your firewall allows outbound UDP traffic on port 443.
Incompatible DNS server: Verify that your chosen DNS server supports DNS Over QUIC.
Bitdefender VPN version incompatibility: Update to the latest version of Bitdefender VPN to ensure support for DNS Over QUIC.
Conflicting DNS settings: Disable any other DNS settings that might interfere with Bitdefender VPN's configuration.
Verify Bitdefender VPN subscription.
Update Bitdefender VPN application.
Configure firewall to allow UDP port 443.
Select DNS Over QUIC in Bitdefender VPN settings (if available).
Test for DNS leaks after connecting to Bitdefender VPN.
Troubleshoot any identified issues.