libapache2-authcassimple-perl software package provides Apache2 module to authenticate trough a CAS server, you can install in your Debian 8 (Jessie) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install libapache2-authcassimple-perl
libapache2-authcassimple-perl is installed in your system.
Make ensure the libapache2-authcassimple-perl package were installed using the commands given below,
$ sudo dpkg-query -l | grep libapache2-authcassimple-perl *
You will get with libapache2-authcassimple-perl package name, version, architecture and description in a table
| Distro | Debian 8 jessie |
| Section | Perl |
| Package | libapache2-authcassimple-perl |
| Version | 0.10-2 |
| Description | Apache2 module to authenticate trough a CAS server |
| Sub Section | Perl |