I have a similar issue, but I don't have the original Watchguard Serial Cable™. Will a normal null modem cable work?
Mine ends with:
*** This is m0n0wall, version 1.3
built on Mon Nov 30 20:18:21 CET 2009 for generic-pc
Copyright (C) 2002-2009 by Manuel Kasper. All rights reserved.
Visit http://m0n0.ch/wall for updates.
LAN IP address: 192.168.1.1
Port configuration:
LAN -> sis0
WAN -> sis1
m0n0wall console setup
**********************
1) Interfaces: assign network ports
2) Set up LAN IP address
3) Reset webGUI password
4) Reset to factory defaults
5) Reboot system
6) Ping host
Enter a number:
but I cannot type. I suspect my cable is not a true null modem. I don't seem to be able to find DHCP on any interface. This is with 9600/8/N/1 on an x700.