Question Resetting a Cisco ASA Firewall to factory defaults, button disabled

EXCellR8

Diamond Member
Sep 1, 2010
4,042
889
136
I've got an abandoned ASA 5506-X firewall that was left over from before the company I work for sold to another. It hasn't been powered on for some 6-7 months now and I wanted to see if I could reset it and possible offload it at some point. Problem is, it seems the reset button on the back has been disabled because it doesn't do anything. I think the device uses the default IP but the ASDM firmware doesn't respond to anything through a UTP cable... so I can't really access it at all.

I don't know all that much about Cisco ASA administration, nor do I care to freshen up on it, so I was wondering if anyone knew how to do it--or has had to do it before. Looking through all of Cisco's documentation is a slog and might be more perplexing than managing the actual device.

Any info is helpful, thanks.
 

EXCellR8

Diamond Member
Sep 1, 2010
4,042
889
136
Bookmarked. Will read through tonight, thanks!

Hopefully I still have a console cable lying around
 

EXCellR8

Diamond Member
Sep 1, 2010
4,042
889
136
So, I was ultimately able to reset this thing... at least I think so. Couldn't find my DB9 serial cable but I was able to find the Cisco USB drivers to emulate the connection.

Once I was able to jack in with Putty it was easy enough. Don't think I'd know how to deploy it in an actual environment though lol

Thanks!
 
  • Like
Reactions: ch33zw1z

ch33zw1z

Lifer
Nov 4, 2004
39,543
20,188
146
So, I was ultimately able to reset this thing... at least I think so. Couldn't find my DB9 serial cable but I was able to find the Cisco USB drivers to emulate the connection.

Once I was able to jack in with Putty it was easy enough. Don't think I'd know how to deploy it in an actual environment though lol

Thanks!

Yea, I can get around basic functions of most Cisco devices, but no way am I getting an ASA up and running for a production environment!

If you're concerned about security, remember to clear the nvram as well (in case the factory reset doesn't, but I suspect it does)
 

EXCellR8

Diamond Member
Sep 1, 2010
4,042
889
136
Turns out, and the VID/serial confirm this, that this particular unit is possibly affected by a known hardware flaw that eventually prevents it from booting... so, I probably wasted my time anyway.

I'll sell it off cheap for parts as-is I mean it still works but I don't think it's an issue that can be solved by firmware; it's a physical hardware level issue that affects certain ones. Awesome.