If you check "Useful Places" => "Downloads" you can download whatever version of LANDesk your company has bought. But I'm assuming that you've got a productive Core Server installed "somewhere" already - in which case ...
Check either:
-- http://YOUR_CORE_NAME/ldlogon/unix/linux/
That will have the basic tarballs with the agent binaries.
Here's the article for "how to install the Linux agent":
- https://community.landesk.com/support/docs/DOC-27369
You may in general want to check out / read up on the articles in the Linux & Unix agent section:
That should make your life hopefully considerably easier.
The first thing you'll want to do is find out what version of LANDesk you Core Server is - just to make sure you're indeed on 9.6
Hope this helps .