ttys file question

Jack Mc Lauren jack.mclauren at
Sun Sep 8 16:40:53 UTC 2013

Hi list

I'm trying to connect to my server via a serial port which is named ttyu6 under FreeBSD. In order to do that, I've decided to change /etc/ttys file like this:

ttyu6   ".... std.115200" cons25  on secure

But I can not connect to my server with this configuration. But if I change ttyu6 to cuau6, everything works fine! I don't understand the difference, would you please explain the reason for me?

Thanks in advance 

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