dcap-tunnel-ssl software package provides SSL tunnel for dCache, you can install in your Debian 9 (Stretch) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install dcap-tunnel-ssl
dcap-tunnel-ssl is installed in your system.
Make ensure the dcap-tunnel-ssl package were installed using the commands given below,
$ sudo dpkg-query -l | grep dcap-tunnel-ssl *
You will get with dcap-tunnel-ssl package name, version, architecture and description in a table
| Distro | Debian 9 stretch |
| Section | Libraries |
| Package | dcap-tunnel-ssl |
| Version | 2.47.10-2 |
| Description | SSL tunnel for dCache |
| Sub Section | Libs |