An encryption software that integrates TLS encryption effortlessly into existing server and client configurations, stunnel requires no alterations to the original code. Its design prioritizes security, portability, and scalability, making it a suitable choice for extensive deployments, including those involving load balancing. With its foundation built on the OpenSSL library, stunnel supports various cryptographic algorithms and is capable of utilizing the FIPS 140-2 validation from the OpenSSL FIPS Provider.

As an open-source solution, stunnel protects web applications by encrypting network traffic, managing connection proxies, and enabling secure execution on systems that may be exposed to untrusted networks. Furthermore, it has the capability to inspect packets within encrypted tunnels, thereby optimizing performance. Acting as a manager for TCP/IP connections, stunnel creates secure tunnels, ensuring private communication between clients and servers. For cost information, including details on features and deployment types, inquiries can be directed to the product team.