Hi mabu_EO,
Brian is correct. SEP's definitions and detection engines do not care what platform they are running on- they'll react to all known threats for all OSes. If you have a Windows/Mac/Linux file server for example, SEP will catch any Windows/Mac/Linux threats that it can detect and keep those from harming any machine in your mixed environment.
Please do update the thread with news if this has answered your question!
With thanks and best regards,
Mick