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JG's avatar
JG
Icon for Cumulonimbus rankCumulonimbus
Oct 21, 2014

Disabling SSLv3 for Configuration Utility.

I tried to follow the instructions in SOL15702: SSLv3 vulnerability CVE-2014-3566 to disable SSLv3 for the Configuration Utility (BIG-IP v11.6.0).

 

Changing, i.e. removing SSLv3, by appending ":!SSLv3" or ":-SSLv3" to the ciphersuite led to my Firefox (v33) giving the following error:

 

"An error occurred during a connection to example.com. Cannot communicate securely with peer: no common encryption algorithm(s). (Error code: ssl_error_no_cypher_overlap)"

 

and I could no longer connect to the CU. I have since reversed the change.

 

After looking into "/etc/httpd/conf.d/ssl.conf", I have found that it seems that what should be changed is "SSLProtocol" rather than "SSLCipherSuite".