Serial port
Finally took some time configuring a firewall out of an old box of mine. Took me ages since I only had two sane floppies around and Debian requires six for a net install (I hope the next Debian Installer will be saner in this regard). This is the relevant grub configuration:
serial --unit=0 --speed=9600 terminal --timeout=5 serial console title Debian GNU/Linux, kernel 2.4.24-i586-0.1 root (hd0,0) kernel /vmlinuz-2.4.24-i586-0.1 root=/dev/hda3 ro console=tty1 console=ttyS1,9600 savedefault
Mark Lanegan - Whiskey for the Holy Ghost