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Re: Configuring DSL 675(Sorry OT)
The default ENABLE password on the 675 used to be blank (just press enter).
However, that was fixed in later versions of the CBOS (Cisco Broadband
Operating System) and I think that it now comes with a default password of
PASSWORD, although I haven't tried this.
If that still doesn't work, or you have forgotten your password for some
reason *cough*, here is a guide to getting the password back.
Connect your PC's serial port to the 675's management port.
Remove, then restore power to the 675.
As soon as the 675's red ALARM light comes on, hit Ctrl-C a few times to
enter ROM monitor mode.
Enter the following to dump 400 bytes of data starting at address fef80030.
You can adjust the number of words if you need a smaller or larger dump:
db fef80030 400
The right hand column is the ASCII dump of your NVRAM. Look for Root
Password = and Enable Password = . The next ten characters after each are
your EXEC and ENABLE passwords, only shifted by two letters (disregard any
This means that a = c, b = d, . = 0, / = 1, 0 = 2, etc. (you may want to
consult an ASCII chart). For example, using this key, if the characters from
the dump were /LwN_qqub your password would be 1MyPasswd.
Reboot the 675 to exit monitor mode.
I use a 675 for my OpenBSD connection, and it works great once you figure
out the CBOS commands and setting up NAT at the router. The only drawback is
that Qwest changes the IP every month or so, but I have a couple scripts
that have taken care of that...
----- Original Message -----
From: John Smith <firstname.lastname@example.org>
Sent: Friday, January 05, 2001 12:30 AM
Subject: Configuring DSL 675(Sorry OT)
> I booted off of a floppy image to Upgrade my OpenBSD system. It went
> when I got to the network part I just used DHCP and it went fine. My
> 675 DSL modem uses PPP to connect to my ISP but acts as a DHCP server for
> internal computers. Configuring OpenBSD was easy as hell for my DSL
> I am having one BIG problem thought, when I connect to my DSL modem via
> telnet and login, I can't use "enable" I have no idea what the password
> could be since I never set one. I need to use enable to turn on the
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