The pam_console.so module uses the
/etc/security/console.perms file to determine the
permissions for users at the system console. The syntax of the file is
very flexible; you can edit the file so that these instructions no
longer apply. However, the default file has a line that looks like
this:
<console>=tty[0-9][0-9]* vc/[0-9][0-9]* :[0-9]\.[0-9] :[0-9] |
When users log in, they are attached to some sort of named terminal,
either an X server with a name like :0 or
mymachine.example.com:1.0, or a device like
/dev/ttyS0 or /dev/pts/2.
The default is to define that local virtual consoles and local X
servers are considered local, but if you want to consider the serial
terminal next to you on port /dev/ttyS1 to also
be local, you can change that line to read:
<console>=tty[0-9][0-9]* vc/[0-9][0-9]* :[0-9]\.[0-9] :[0-9] /dev/ttyS1 |