vCenter and host communication SSL v3

Hello

Can someone tell me why a vCenter Server Windows would communicate with a 5.5 on TCP/443 ESXi host using SSLv3 (in particular)?

If you search Google for "kb2093354" titled "VMware KB: disable encryption on the server vCenter SSLv3" which seems to be what I want, it is no longer available, does anyone have an updated link to day for her?

According to the Documentation centre, 443 is the WS-Man/HTTPS port and is a required port, but how to disable support for SSLv3? I don't want to tell browser to vCenter for admin, I mean ESXi host to vCenter

Thank you

I can confirm that vCenter 5.5 (U2) communicates with guests (5.5 U2) via SSLv3 only, the reason being vCenter only support SSLv3 in his original SSL Client Hello packet when connecting to an ESXi host:

Note: Taking communication SSL/TLS between agents vCenter and vpxa on hosts always is launched from the process of vpxa.exe of vCenter acting as the Client that connects to port 443 of a host and not the other way around (which caught vCenter protocols supported on port 443 is not relevant).

ESXi supports TLS1 with SSLv3 for long, and since ESXi 5.5 it comes from the tree of openssl 1.0.1 libraries that support TLS1.1/1.2, which can be confirmed from a host:

# openssl s_client-connect [insert here the ESXi host name]: 443 < ev/null="" 2=""> 1 | grep 'SSL-Session' - A2

SSL-Session:

Protocol: TLSv1.2

Encryption: AES 256-GCM-SHA384

I suspect that the configuration changes must be made to the vCenter Java application so that the Client sends a TLS version in the handshake Hello. When I lanuch the Java Control Panel on the vCenter via the command below I can see SSLv3 and TLSv1 are supposed to be enabled, but the negotiation Client Hello sent by vCenter to the SSLv3 Client only:

Com.sun.deploy.panel.ControlPanel - Xbootclasspath/r: "c:\Program Files VMware vCenter Server - Java Components\lib\deploy.jar" "C:\Program Files\Fichiers VMware vCenter Server - Java Components\bin\javaw.exe"


It is probably crashed somewhere in the application and I have not tried to disable SSLv3 here since I do not have a currently available test environment. in any case, it would be well if VMware is completely removed this KB article either open to the public instead of saying:

You are not allowed to view this article. It may have been moved or the reference is out of date.

Tags: VMware

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