For greater security, edit the boot-time database, /etc/security/tsol/boot/tnrhdb.
Editing the boot-time databases is required only if the default setting is more permissive than your site's security requirements.
See "Special Boot-time Trusted Network Databases" in Trusted Solaris Administrator's Procedures for the security implications of the boot-time network databases.
See "Administering the Boot-time Trusted Network Databases" in Trusted Solaris Administrator's Procedures for steps to take to modify the boot-time network database defaults.