[VoIP] Nortel/Ambit ATA

[Steph Kerman]

Nice work, Keelan!

Steph

Keelan Lightfoot wrote:
> I thought I'd take a minute to share some information on what seems  
> to be a unknown brand of ATA.
>
> I happened across a couple Nortel single port ATAs (re-badged Ambit  
> ATAs) a while back. Like Vonage ATAs, they were locked up. The only  
> access I had was to a useless client-side interface where I could  
> change their network port settings. I popped the case open, and there  
> was a well-labeled serial port header on the board. With a RS-232- 
>  >3.3v level convertor I was able to access the serial console  
> interface, but it unfortunately was also limited without the correct  
> password.
>
> The good news is that if I rebooted it and hit ctrl-c during the boot  
> sequence, it would dump to a very simple boot monitor (commands:  
> help, exit, boot, memdump). I searched the resulting dump for the  
> password for the area that I had access to. About 2 lines of garbage  
> above my password was the supervisor password that gave me access to  
> the entire system.
>
> The interesting thing is that my two ATAs both had the same 6  
> character password -- It makes me think twice about the security of  
> some VOIP providers.
>
> Anyway, if you have access to one of these things, finding the  
> password is not too difficult given time and the motivation to do it.  
> They support pulse dialing, and have a fairly competent web based  
> management interface, and they play well with Asterisk.
>
> - Keelan
>
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>   

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Thanks.