Farmer maybe, one crashing the network? (9)
I believe the answer is:
landowner
'farmer maybe' is the definition.
(a farmer owns land)
'one crashing the network?' is the wordplay.
I cannot really understand how this works, but
'one' could be 'an' (an apple is one apple) and 'an' is present in the answer.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for landowner that I've seen before include "man of property" , "One with much property" , "One with estates" , "Possessor of real estate" , "Man of means" .)