After the above steps, the management station first implements an identity authentication to the SSH server of {HEAD ~ the managed device} according to {TAIL ~ the related information} of the SSH host key obtained 
according to
After the above steps , the management station first implements an identity authentication to the SSH server of { HEAD ~ the managed device } according to { TAIL ~ the related information } of the SSH host key obtained
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH