[SLUG] how can I rsh ?

[henry]

Dears :   I edit a file .rhosts under /root as belows                      192.168.0.251  root &    I use command "rsh 192.168.0.223" from another machine   Then I get  message "192.168.0.223 connection refused " .   How can I rsh as a root ?   Tks in advance ! Henry