tomasv ✭✭✭✭✭

I think that only alternative to port 22 is to use manual deployment - Deploy an agent manually to a Linux-based computer

There could be constraint your number of components per your licenses and scalability (~8-10k component monitors per polling engine - see http://www.solarwinds.com/documentation/Orion/docs/ScalabilityEngineGuidelines.pdf )