Thanks for your help -- I just didn't know how to enable the *testing* repo of OMV extras, but figured out how. I'm installing fail2ban now, via the GUI.
To enable the testing repo of OMV-extras, just need to go to "OMV-extras" on the webgui and there is an option to enable it.
Thanks!
P.S. The output of the code is now:
Code
$ apt-cache policy openmediavault-fail2ban
openmediavault-fail2ban:
Installed: 1.3.1
Candidate: 1.3.1
Version table:
*** 1.3.1 0
500 https://dl.bintray.com/openmediavault-plugin-developers/erasmus-testing/ jessie/main amd64 Packages
100 /var/lib/dpkg/status
1.3.0 0
500 https://dl.bintray.com/openmediavault-plugin-developers/erasmus-testing/ jessie/main amd64 Packages