apt-get install rsh-client rsh-server xinetd 

# default: on 
# descrīption: The rshd server is the server for the rcmd(3) routine and,  
#    consequently, for the rsh(1) program. The server provides  
#    remote execution facilities with authentication based on  
#    privileged port numbers from trusted hosts. 
service shell 
{ 
    disable = no 
    socket_type       = stream 
    wait          = no 
    user          = root 
    log_on_success     += USERID 
    log_on_failure     += USERID 
    server         = /usr/sbin/in.rshd 
} 
 
/etc/xinetd.d/rlogin 
 
# default: on 
# descrīption: rlogind is the server for the rlogin(1) program. The server  
#    provides a remote login facility with authentication based on  
#    privileged port numbers from trusted hosts. 
service login 
{ 
    disable = no 
    socket_type       = stream 
    wait          = no 
    user          = root 
    log_on_success     += USERID 
    log_on_failure     += USERID 
    server         = /usr/sbin/in.rlogind 
} 
 
/etc/xinetd.d/rexec 
 
# default: off 
# descrīption: Rexecd is the server for the rexec(3) routine. The server  
#    provides remote execution facilities with authentication based  
#    on user names and passwords. 
service exec 
{ 
    disable = no 
    socket_type       = stream 
    wait          = no 
    user          = root 
    log_on_success     += USERID 
    log_on_failure     += USERID 
    server         = /usr/sbin/in.rexecd 
} 

root@block2:~# /etc/init.d/xinetd restart 
xinetd stop/waiting 
xinetd start/running, process 26181 

root@block1:~# cat .rhosts  
compute root 
block1 root 
block2 root 

root@block1:~# cat /etc/hosts.equiv  
# /etc/hosts.equiv: list of hosts and users that are granted "trusted" r 
#      command access to your system . 
compute 

root@compute:~# rsh block2 date 
Thu Mar 30 16:38:42 CST 2017