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From Reindl Harald <>
Subject Re: ssl questions
Date Mon, 20 Oct 2014 19:57:04 GMT

Am 20.10.2014 um 21:50 schrieb James Peach:
>> On Oct 20, 2014, at 8:49 AM, Reindl Harald <> wrote:
>> HTTPD: SSL 2 handshake compatibility Yes
>> TS:    SSL 2 handshake compatibility No
> We disabled SSLv2 by default on TS-787, Tue May 17 15:34:41 2011.

but that has nothing to do with "SSL 2 handshake compatibility" i guess

compare the results of HTTPD / ATS
both with no SSLv2 and SSLv3

>> can that be the reason "ab -c 100 -n 100000" fails to a ATS?
>> keep in mind that don't mean sslv3 or even sslv2 are enabled!
> Not really sure about that, but should be easy to test when I get a minute.


>> HTTPD: Heartbeat (extension) Yes
>> TS:    Heartbeat (extension) No
>> how does ATS that using the same openssl binaries?
>> "OPENSSL_NO_HEARTBEATS=1" as ENV don't disable it for httpd
> You need to set OPENSSL_NO_HEARTBEATS=1 at OpenSSL build time

i am aware of that

"OPENSSL_NO_DEFAULT_ZLIB=1" works as env-var for other historical issues

> I don't know why we would not be vulnerable to heartbleed with a vulnerable OpenSSL version.
I poked around in OpenSSL and mod_ssl for a while and AFAICT heart beats are enabled by default.
I didn't see any special knob that would turn it on.

well, i just compared aginst a pure 
HTTPD server and a ATS server on the same patch level with Fedora 20 and 
wondered that ATS is listed as "Heartbeat (extension) No" while HTTPD 
shows a yes

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