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28.8 Secure the console port
28.8.1 SunOS 4.1.X
Root can only login to ports labeled secure in /etc/ttytab. Unless your console is in a locked room all ports should be labeled unsecure. This will require you to first login as yourself and then su to root. It also requires that the root password be entered when booting in single user mode from the disk.
Unix System Administration - 8 AUG 1996
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