Verify that the Key in the Stunnel folder starts with the line “-BEGIN RSA PRIVATE KEY-”. Remove any Butterfly keys / certs from Mac Keychain.ĭo NOT install Butterfly Key and / or Cert to the Mac Keychain.Ĭopy key and cert from the Downloads folder to the folder /usr/local/etc/stunnel Stunnel is a free software authored by Michał Trojnara and distributed under GNU GPL version 2 or later with OpenSSL exception. Additionally, commercial technical support for Stunnel or non-GPL licenses are offered for a fee directly from Stunnel.

Stunnel is a proxy designed to add TLS encryption/decryption functionality to existing clients and servers without any changes in the original programs' code. Since many PACS solutions do not inherently support the encryption/decryption of DICOM-TLS, we leverage either a network device such as a Citrix ADC (Netscaler), F5 Networks Big-IP, or software like Stunnel to terminate (decrypt/encrypt) the TLS encrypted network traffic. The Butterfly Cloud DICOM Connector utilizes DICOM-TLS (Transport Layer Security, v 1.2) to facilitate point-to-point encrypted communication without the drawbacks and setup challenges associated with a VPN tunnel. This enables secure transmission of ultrasound studies captured with Butterfly iQ+, via Butterfly Cloud, to a DICOM PACS, VNA or other medical image archive. The Butterfly Cloud DICOM Connector creates a secure, encrypted connection between Butterfly Cloud and your facility’s DICOM endpoints. Typically, this communication is unsecured, meaning any third party could potentially see what data is being exchanged. When a medical modality or a DICOM software client connects to a (PACS) server, communication begins between the systems.

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