CentOS 7 correct settings for OpenSSL, apache, postfix.

Support for security such as Firewalls and securing linux
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sblantipodi
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CentOS 7 correct settings for OpenSSL, apache, postfix.

Post by sblantipodi » 2014/10/17 08:47:43

Hi,
I succesfully configured CentOS 6 to get an "A SCORE" in the qualys ssl labs test.

On CentOS 7 I get tremendous result.
My CentOS box is completely unsecure.

It seems that there is no support to TLS1.1 and 1.2, what should be the correct rule to put in /etc/httpd/conf.d/ssl.conf ???
Is there a guide on securing SSL on CentOS 7?

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jyoung
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Re: CentOS 7 correct settings for OpenSSL, apache, postfix.

Post by jyoung » 2014/10/17 13:48:49

It seems that there is no support to TLS1.1 and 1.2
That's not true. The config files used for the versions of Apache between 6 and 7 aren't that much different. I have exactly this in /etc/httpd/conf.d/ssl.conf on one of my RHEL 7 Apache servers:

Code: Select all

#   SSL Protocol support:
# List the enable protocol levels with which clients will be able to
# connect.  Disable SSLv2 access by default:
SSLProtocol all -SSLv2 -SSLv3
-- Jeremy --

aks
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Re: CentOS 7 correct settings for OpenSSL, apache, postfix.

Post by aks » 2014/10/17 16:37:45

Type openssl ciphers -v 'TLSv1.2' that'll list the available ciphers in the TLS1.2 support group.

sblantipodi
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Re: CentOS 7 correct settings for OpenSSL, apache, postfix.

Post by sblantipodi » 2014/10/19 13:53:04

I figured it out, I had a bad configuration of the ssl.conf
now all works fine and I have disabled SSL3 for the recent security hole discovered by google.

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