If you want to show console output from a Serial device such as RS-232 interface, you need to make minor modifications in pfsense 2.0 distro.
Switch to shell by pressing 8 from the pfsense console menu and edit the file /boot/loader.conf by typing:
Add the below lines to the file after pressin “i” (insert) or “A” (append)
press ESC and type :wq to save and exit, we had choosen 115200 for baud rate as most of the devices accept those speeds, you may choose below rates.
Add the following line to /etc/ttys
console “/usr/libexec/getty Pc” cons25 on secure
type the following to enable booting from serial console
echo ‘-h’ >> /boot.config
Note that, after adding -h to the
If available be sure to configure BIOS serial console redirection with the same speed you set above.
echo 'console="comconsole"' >> /boot/loader.conf