It needs login access to the linux systems.
If all linux systems are the same password edit the global ssh from here:
Go to Scanning->Scanning Credentials
If not you'll have to do credential mapping, set an ip range and then map a credential to that ip range.
@ scryed - thanks - done - very good this -- too bad only 100 free assets - not 100 free IP addresses LOL!
@ philip - thats an awesome find - I got the other Gigabyte Auros type which is bloody expensive and price for this Auros went up too.
The 6 x 1070 Zotac Mini is up and running - will post results later - too sleepy now.