server
Install
rsh-server
using rhosts
If you want to have a password-less access
edit in the home directory the
$HOME/.rhosts and add the nodes, from which access is allowed.
Better
chmod 600 .
This approach works for root and user access.
If you really need root access,
edit the
/etc/securetty
and add some lines with
pts/0 ... pts/n .
In principle, on can use netgroups, probided by
NIS or
LDAP
using hosts.equiv
Another way only works for user accounts.
Edit the
/etc/hosts.equiv and
add a line
host user .
This does not work for a root account!