Lost access to web gui

[skydiver]

We had our primary internet service and while attempting to get a backup circuit activated and connected, I lost access to the Webgui from outside and inside the network.  It it appears to have happened when I disabled the down WAN interface.

I was still able to get the network up and working with our new circuit after I completed the provider's circuit activation but still cannot gain access to the webgui.

I tried accessing the webgui from the new WAN2 interface (I had setup all the access rules before I realized that the circuit had not yet been activated)

The root password isn't working so I am going to have to wait until I can boot into single user mode so I can try to rollback the config to before I made the change but I need help.

• Where is the auto-created backups stored in the file system?
• How can I roll it back from the console so I can go back to before i disabled the interface? My last backup is over a year old)
• How can I identify why this happened?

This is not the first time this has occurred and I still cannot figure out how I can lock myself out of the Webgui.  I have the anti-lockout rules in place and active on ALL internal LAN segments

I have never seen a firewall that essential can break itself with no warning like this.  Is there a failsafe way to ensure this cannot occur in the future?

Once I get access to the filesystem, I can backup the change versions of the xml and try to provide more details of what change was made that killed this.

I would really like the ability to apply changes in RAM instead of writing to disk as a default.  This way if something breaks, a simple reboot will restore to the most recently saved config like most other routers.