Jabber comments does not work with Expressway 8.7.2

Hello

the last Highway requires Diffie-Hellman keys at least 1024 bits in size.

Unfortunately comments Jabber always uses 768bits as the 'server Temp key' on tomcat. This is why you cannot use Jabber comments (any version; I tried 10.6.9 and 10.6.10) with Expressway 8.7.2.

I also checked the Tomcat settings and there is the appropriate setting in/opt/cisco/jabber/conf/mss-sip-stack-properties (which, I guess that's the relevant file):

# 2048-bit support for the Diffie-Hellman key ephemeral
jdk.tls.ephemeralDHKeySize = 2048

Unfortunately, this does not work, or at least the results are not as expected.

Try to connect with openssl (openssl s_client-connect : 5061) shows:

-snip-

Types of client certificate: RSA sign, DSA
Required Signature algorithms: ECDSA + SHA512: RSA + SHA512: ECDSA + SHA384: RSA + SHA384: ECDSA + SHA256: RSA + SHA256: ECDSA + SHA224 RSA: + SHA224: ECDSA + SHA1: SHA1 + RSA: DSA + SHA1: RSA + MD5
Required Signature shared algorithms: ECDSA + SHA512: RSA + SHA512: ECDSA + SHA384: RSA + SHA384: ECDSA + SHA256: RSA + SHA256: ECDSA + SHA224 RSA: + SHA224: ECDSA + SHA1: SHA1 + RSA: DSA + SHA1
Peer signature digest: SHA512
Temp server key: DH, 768 bits
---
SSL handshake has read 3205 bytes and written 210 bytes
---
New, TLSv1/SSLv3, Cipher is DHE-RSA-AES256-SHA256
The server public key is 4096 bit
Secure renegotiation IS supported
Compression: NONE
Expansion: NO
No ALPN negotiated

-snip-

Expressway present "key too small dh" in the log file and the 'TLS negotiation failure' when checking the status of the area.

It works perfectly with Expressway 8.6.1 (have not tried far 8.7.1).

Log files / dumps / snapshots are available on request, but I think the problem is pretty clear and I hope that it will be easy to solve.

Thank you and best regards

Wolfgang

It's really weird, the first official Jabber client version is 10.0, I check the version of java on Jabber client 10.0, the version is "1.7.0_55".

Where do you find the original installation image? -What have you never install any external rpm on the comment Jabber server?

Comments of Jabber, connect with us: Administration of Cisco Jabber Guest-> marbles-> download all the

BTW, run the command "rpm - qa' on terminal server Jabber comments and send us the list.

Thank you

Tags: Cisco Support

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