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M README.md

@@ 42,6 42,58 @@ eg: ```netcat localhost 44033```
 * [CRC](https://www.npmjs.com/package/crc)
 * [net](https://www.npmjs.com/package/net)
 
+## TLS
+
+Using [stunnel](https://www.stunnel.org/)
+
+Generate a certificate
+
+```openssl req -newkey rsa:2048 -nodes -keyout key.pem -x509 -days 365 -out certificate.pem```
+
+Create Stunnel config files
+
+p1.stunnel
+```
+; TLS front-end to a web server
+fips=no
+
+[https]
+accept=44034
+connect=44033
+cert=/path/to/certificate.pem
+key=/path/to/key.pem
+```
+
+p2.stunnel
+```
+; TLS front-end to a web server
+fips=no
+
+[https]
+accept=44045
+connect=44044
+cert=/path/to/certificate.pem
+key=/path/to/key.pem
+```
+
+Start the two stunnel instances
+
+```stunnel p1.stunnel```
+
+```stunnel p2.stunnel```
+
+Then users can connect with
+
+```openssl s_client -connect domain.tld:44034```
+
+```openssl s_client -connect domain.tld:44045```
+
+or
+
+```gnutls-cli domain.tld -p 44034```
+
+```gnutls-cli domain.tld -p 44045```
+
 ## Author
 
 [**Jeremy Lee Shields**](http://jeremylee.sh/)