Modify the file server:
shell> vim / etc / SSH / sshd_config
Port 52113 to modify the default port (for safety)
UseDNS yes reverse lookup will be changed to No client host name, verify, to prevent the client spoofing
PermitRootlogin no root login prohibited
GSSAPIAuthentication yes cancel, open NO solved using ssh connections between Linux slow the problem
PermitEmptyPasswords no prohibit the use of blank password (blank by default)
ListenAddress 192.168.1.x network addresses on the server for remote connections only run, refused to directly address outside the network, you can use *** springboard into the local area network, through such to access, more security.