Stunnel
Stunnel is an open-source multi-platform application used to provide a universal TLS/SSL tunneling service.
| Developer(s) | Michał Trojnara |
|---|---|
| Initial release | 10 December 1998 |
| Stable release | 5.69
/ 4 March 2023 |
| Repository | www |
| Written in | C |
| Operating system | Multi-platform |
| Type | Proxy, Encryption |
| License | GNU General Public License |
| Website | www |
Stunnel is used to provide secure encrypted connections for clients or servers that do not speak TLS or SSL natively. It runs on a variety of operating systems, including most Unix-like operating systems and Windows. Stunnel relies on the OpenSSL library to implement the underlying TLS or SSL protocol.
Stunnel uses public-key cryptography with X.509 digital certificates to secure the SSL connection, and clients can optionally be authenticated via a certificate.
If linked against libwrap, it can be configured to act as a proxy–firewall service as well.
Stunnel is maintained by Polish programmer Michał Trojnara and released under the terms of the GNU General Public License (GPL) with OpenSSL exception.