Cool project :
http://asa_project.gromnet.net/ uses qemu to virtualize
the cisco asa firewall. The ISO on the page boots DSL - damn small
linux which starts the qemu emulation. I started it in VirtualBox,
created a serial device with options "HostPipe" path "/tmp/foo"
Started up minicom with a serial port set to "UNIX:/tmp/foo" and that
worked.
From here I have command line interface the the ASA. Now to see if I
can load an updated image ...
ciscoasa(config)# sh ver
Cisco Adaptive Security Appliance Software Version 8.0(2)
Compiled on Fri 15-Jun-07 19:29 by builders
System image file is "Unknown, monitor mode tftp booted image"
Config file at boot was "startup-config"
ciscoasa up 1 hour 0 mins
Hardware: , 128 MB RAM, CPU Pentium II 1984 MHz
Internal ATA Compact Flash, 512MB
BIOS Flash Firmware Hub @ 0xffe00000, 1024KB