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Re: [Linphone-users] TLS handshake failiure

From: Trent Creekmore
Subject: Re: [Linphone-users] TLS handshake failiure
Date: Wed, 8 Sep 2021 17:59:20 -0500
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.12.0

FreePBX already sends the whole certificate chain. I have the latest Windows Phone client using it on another FreePBX system which gets updated certificates from Let's Encrypt every three months, and I have not had a single issue.

I also updated the client on Android to 4.5.2 from 4.5.1.

Not sure how to check the Android client to check "if the Sectigo RSA Domain Validation Secure Server CA is installed on the Android client."

I went ahead and connected by UDP for now, but would prefer to get TLS functioning.


On 9/8/21 11:13 AM, Dennis Filder wrote:
On Tue, Sep 07, 2021 at 04:22:18PM -0500, Trent Creekmore wrote:
Well, SSL is used for https.

In FreePBX it has a Certificate manager which allows the use of
certificates, not only for SSL in the PBX web interface, but also be used
for TLS in SIP..

As I have mentioned when first set up this TLS connection some months ago,
it was connecting. Certificate still valid.

I did not mention I am using Android client.

Here is more of the log (redacted a bit)

2021-09-07 14:06:08:999 [org.linphone/belle-sip] MESSAGE Trying to connect
to [TLS://::ffff:2myIP Address:5061]
2021-09-07 14:06:09:181 [org.linphone/belle-sip] ERROR Cannot connect to
2021-09-07 14:06:09:181 [org.linphone/belle-sip] MESSAGE
channel[0x784aec40]: entering state ERROR
Nothing here clues me in further.  I can just reiterate:

* Check if the Sectigo RSA Domain Validation Secure Server CA is
   installed on the Android client and that the fingerprints are

* Try if you can configure FreePBX to send the entire certificate

* Beyond that you will have to look at the wire and/or try your luck
   with s_client.


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