[YMCS/YDMP Free Trial Program]Yealink would like to offer Free Trial Program of Yealink device management service for our current eligible customers. You can see the details below.
https://www.yealink.com/ydmp-freetrial-2020


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Broken Certificate
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CAVoIPGirl Offline
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Post: #1
Broken Certificate
We are having issues with the certificates that are installed - namely T21P-E2s and a few T21Ps. When trying to access a device outside the LAN remotely, the firewall is blocking our access to view the phone's GUI.

The error message states it's using a broken signature algorithm and the customer's firewall will not allow traffic to pass due to this.

I need suggestions on a fix (the certificate is not expired) because we have thousands of devices depending on resolution.

Current firmware is 52.84.0.140


Thank you.
07-26-2021 11:56 PM
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complex1 Offline
3CX Adv. Cert. Engineer
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Posts: 1,337
Joined: Jan 2014
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Post: #2
RE: Broken Certificate
(07-26-2021 11:56 PM)CAVoIPGirl Wrote:  We are having issues with the certificates that are installed - namely T21P-E2s and a few T21Ps. When trying to access a device outside the LAN remotely, the firewall is blocking our access to view the phone's GUI.

The error message states it's using a broken signature algorithm and the customer's firewall will not allow traffic to pass due to this.

I need suggestions on a fix (the certificate is not expired) because we have thousands of devices depending on resolution.

Current firmware is 52.84.0.140


Thank you.

Hi,

I like to suggest resetting the phone to factory default, re-provisioning and try again?

Hope this will help.

Kind regards,
Frank.

I am not an employee of Yealink.
Dutch is my native language, not English. Apologies for my imperfect grammar.
Please do not send unsolicited PM messages. I will not answer them.
07-27-2021 01:15 AM
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CAVoIPGirl Offline
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Posts: 2
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Post: #3
RE: Broken Certificate
(07-27-2021 01:15 AM)complex1 Wrote:  
(07-26-2021 11:56 PM)CAVoIPGirl Wrote:  We are having issues with the certificates that are installed - namely T21P-E2s and a few T21Ps. When trying to access a device outside the LAN remotely, the firewall is blocking our access to view the phone's GUI.

The error message states it's using a broken signature algorithm and the customer's firewall will not allow traffic to pass due to this.

I need suggestions on a fix (the certificate is not expired) because we have thousands of devices depending on resolution.

Current firmware is 52.84.0.140


Thank you.

Hi,

I like to suggest resetting the phone to factory default, re-provisioning and try again?

Hope this will help.



It does not work. That was the 2nd step tried.....thank you, though.
07-27-2021 01:19 AM
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