Polycom has something like that functionality in current firmware - but I believe if you _upgrade_ to a current firmware, it doesn't work - it only works if it had that newer key installed in the factory image. -- Nathan On 10/24/2013 10:44 AM, Cal Leeming [Simplicity Media Ltd] wrote:
This is one of the concepts I'd raised yesterday, generating a nonce using a unique value that only the vendor and the phone knows (i.e. a serial number, or in future phones, TPM/RSA module). However if the keys are ever compromised, then this would be rendered useless. Encryption is also good, but relies on a strong password which is difficult to type in on a phone and removes the concept of zero touch.
To be honest, I don't think zero touch is going to be feasible if we want to keep security, because you are trusting that the keys stored at <vendors provisioning system here> haven't been compromised. One touch would be a much better solution (there have been some great suggestions on that so far).
Cal
On Thu, Oct 24, 2013 at 4:17 PM, Moishe Grunstein <max@nysolutions.com <mailto:max@nysolutions.com>> wrote:
I wonder if Yealink phones have a certificate that can verify the MAC address being provisioned, the way the newer Snom do.____
http://wiki.snomone.com/index.php?title=Plug_and_Play_for_snom_phones#Pairin...
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Thanks,____
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Moishe Grunstein____
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*From:*freeswitch-users-bounces@lists.freeswitch.org <mailto:freeswitch-users-bounces@lists.freeswitch.org> [mailto:freeswitch-users-bounces@lists.freeswitch.org <mailto:freeswitch-users-bounces@lists.freeswitch.org>] *On Behalf Of *Moshe3t *Sent:* Thursday, October 24, 2013 10:47 AM *To:* FreeSWITCH Users Help *Subject:* Re: [Freeswitch-users] [Special Announcement] ClueCon Weekly Special Security Edition! Wed Oct 23rd @ 1PM Eastern____
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Hi
I would suggest (I have Bcc'd Yealink as well) that as they have when a phone is reset to factory default it pops up on the screen of the phone local network option (DHCP/Static) and modifiable via phone keypad it should also ask encrypted provisioning or not and if encrypted is chosen it should let the end user put in the decryption key via phone keypad which will be available on the website of the provisioning server (assuming the its secure as in most cases might hold sip credes as well) so the end user will be able to setup and auto provision their phone without login to the phone web gui (ok! it won't zero touch it will be 1 touch provisioning, as if the doesn't have to touch the phone at all ;-) )
before submitting this approach to any vendors i would like to hear input and make sure the issue is addressed properly and hear if anyone have a better approach to fix this issue globally (at least with Yealink line ofproduct as they seem to be very cooperative and understanding in general especially when it comes to security, in hopes other companies will follow suit)
Sincerely
Moshe BT
On 10/24/2013 10:05 AM, Ken Rice wrote:____
The video has been marked private at vendor request...
On 10/24/13 2:11 AM, "Gerald Weber" <gerald.weber@besharp.at <http://gerald.weber@besharp.at>> wrote:____
Thanks, but youtube says this video is private.
*Von:*freeswitch-users-bounces@lists.freeswitch.org <http://freeswitch-users-bounces@lists.freeswitch.org> [mailto:freeswitch-users-bounces@lists.freeswitch.org] *Im Auftrag von *Cal Leeming [Simplicity Media Ltd] *Gesendet:* Mittwoch, 23. Oktober 2013 23:38 *An:* FreeSWITCH Users Help *Cc:* freeswitch-dev@lists.freeswitch.org <http://freeswitch-dev@lists.freeswitch.org>; freeswitch-cluecon@lists.freeswitch.org <http://freeswitch-cluecon@lists.freeswitch.org> *Betreff:* Re: [Freeswitch-users] [Special Announcement] ClueCon Weekly Special Security Edition! Wed Oct 23rd @ 1PM Eastern
For those that missed it, you can watch the whole thing here;
http://www.youtube.com/watch?v=raXkHi_uGF8____
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-- ------------------------------------------------------------ Nathan Neulinger nneul@mst.edu Missouri S&T Information Technology (573) 612-1412 System Administrator - Architect