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Joined: Jan 2015
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rp108 Offline OP
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The system has a KxTD-1232 and tvs200 VM.

The TVS200 only has 11 mailboxes, counting 998 and 999.

I can look into VM logs and see the calls that were made, the times, the associated mailboxes, the numbers dialed.

I cannot figure out where/how it was hacked.

All of the notification settings in every mailbox are blank.
Ail boxes have PWs 7 to 8 digits long.

I have a vague idea that there may be some hack of a personal mailbox voicemail menu, but I have no experience with that on the tvs200 and don't know where to look.

In the mean time, within the KxTD switch, I have put VM jacks into COS 7, and have set COS 7 to not allow outbound calls, outside transfer. I am hoping that that will prevent any hack from working.

Any help or advice would be greatly appreciated.
I have access to all the manuals.

Thanks,
rp108

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OBT Offline
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Are Mailbox 998 and 999 locked with passwords as well?


“I have not failed. I've just found 10,000 ways that won't work.”
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Every hack I've ever had with VM has involved the caller dialing 91x or 8xx and the VM blindly processing the 3 digits. I love the TVA 3.x software because you don't have to think anymore, just put it in the string.

Try to block any digits in your Custom Service menu that you don't need. Be extremely observant of the digits 8,9 and 0.

Carl

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rp108 Offline OP
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Hi OBT,

Thanks for responding. Yes 998 and 999 have 8 digit random passwords.
Would you agree that if I set the KxTD switch, so that the Jacks for VM have COS settings that do not allow: Call Transfer To Outside Line (503) and Call Forwarding To Outside Line (504) that it is impossible for a hacking event to get an outside line?


Hi Carl,
Thanks for responding. I will implement that.

Would you agree that if I set the KxTD switch, so that the Jacks for VM have COS settings that do not allow: Call Transfer To Outside Line (503) and Call Forwarding To Outside Line (504) that it is impossible for a hacking event to get an outside line?

Many thanks,
rp108


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Originally Posted by rp108
Hi Carl,
Thanks for responding. I will implement that.

Would you agree that if I set the KxTD switch, so that the Jacks for VM have COS settings that do not allow: Call Transfer To Outside Line (503) and Call Forwarding To Outside Line (504) that it is impossible for a hacking event to get an outside line?

Many thanks,
rp108

No. My last hack had all the above, but they still managed to break through the restrictions. I didn't study it, because the TVA had an upgrade (my trouble started when the memory card failed on the VM and I dropped a replacement in without upgrading the software), but my COS on the VM ports was 7 with no outside lines and they still managed to push through.


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What "string" are you referring to, in the TVA V3.x program? Is this the Custom Service dialing options?


Moderated by  Carl Navarro, OBT 

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