Filer Administration Basics2-35
6. Specify up to five time servers by entering the following command:
options timed.servers

servers

servers

is a list of the host names or IP addresses of up to five time servers,
separated by commas.
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The following options to the options command help maintain filer security:
The telnet.hosts option restricts telnet access to a limited number of
hosts. Use this option to specify a comma-separated list of up to five hosts that
can log in to the filer using telnet. Alternatively, you can disable telnet for all
hosts by specifying a hyphen (-). By default, the option argument consists of an
asterisk (*), which means all hosts have telnet access.
A record of all telnet and console logins is maintained in the /etc/messages file
on the root volume.
The mount_rootonly option restricts the mount privilege to root using privi-
leged ports (ports 1 through 1,024). By default, the option is enabled. This option
accepts the arguments off and on to disable and enable it. This option is applica-
ble only if your filer runs NFS.
NOTE: Some PC clients and some older implementations of NFS on UNIX worksta-
tions use non-privileged ports to send requests. If you have these clients at your site,
disable the mount_rootonly option or upgrade the client software.
The wafl.root_only_chown option enables only root to change the owner of
a file. When the option is disabled, the owner of a file can change its ownership
without being root. By default, this option is enabled. Use the arguments off
and on to disable and enable the option.
When a non-root user changes the owner of a file, the set-user-id and set-group-
id bits are cleared. If a non-root user tries to change the owner of a file but the
change causes the files recipient to exceed his or her quota, the attempt fails.
This option is applicable only if your filer runs NFS.