What is the reason of A- in SSLLABS?
We have been experiencing downgrades in security level because HSTS is not
supported by default in pound (Debian package)
As Jurgen said, *"**You can probably get to A+ is you have lots of time to
spare to tweak it to the max.", *the issue is that if you want to obtain an
A+ along time you have to work in order to keep this security Level, that
is not a direct task of Load Balancing, it is more a complementary feature,
in my point of view this should be done by administrator not developer, we
have enabled CIphers section in order to help the maintenance task.
If you think some additional feature can help to make this maintenace task
easiest please let us know.
Regards!
2016-10-26 13:47 GMT+02:00 Jurgen Schepers <jurgen.schep...@chapoo.com>:
> I'm using 3.10.1 with that cipher string and I use ssllabs to test. It
> clearly shows that SSLv3 is disabled and the result is A-. I checked the
> pound config file and it has the DisableSSLv3 option set just above the
> cipher string. I can't remember putting that there myself
> (/usr/local/zenloadbalancer/config/YourFarm_pound.cfg). I did quite some
> testing so it is possible it was a manual change but not that I can
> remember.
>
> If you really need higher scores another thing you can do is setup a clean
> minimal CentOS, from epel install pound and copy over the config from zen
> to CentOS. Things to keep in mind: different file location
> (/etc/pound.cfg), need to open firewall, need to setup failover, that ssl3
> option changed in the latest release so now put "Disable SSLv2" and
> "Disable SSLv3". That way I got it to A, also allowing forward secrecy so
> you get iOS support, with this string: AES256+EECDH:AES256+EDH:!NULL. You
> can probably get to A+ is you have lots of time to spare to tweak it to the
> max.
>
> On 26/10/2016 13:17, David Byrne wrote:
>
> Hi Jurgen,
>
>
>
> I’m intrigued to know how? I can’t use public SSL testers due to the
> staging environment not being public facing. However I am testing with a
> direct openssl connection, and using your cipher string, I am able to
> establish handshake on SSLv3, TLSv1, 1.1 and 1.2. So I can’t imagine any
> reputable SSL tester would grade an SSL endpoint an A- whilst still
> offering SSLv3 and TLSv1 connections?
>
> Best Regards,
> *Dave *
> *Byrne *Head of Technical Projects
>
> Office: 01622 524 200
> The Maidstone Studios | Vinters Business Park | New Cut Road | Maidstone |
> Kent | ME14 5NZ
> <https://www.vooservers.com/>
>
> <https://www.facebook.com/VooServers>
>
> <https://twitter.com/vooservers>
>
> <https://uk.linkedin.com/pub/dave-byrne/79/2aa/983>
>
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> *From:* Jurgen Schepers [mailto:jurgen.schep...@chapoo.com
> <jurgen.schep...@chapoo.com>]
> *Sent:* 26 October 2016 11:19
> *To:* zenloadbalancer-support@lists.sourceforge.net
> *Subject:* Re: [Zenloadbalancer-support] Cipher String to Drop SSLv3
> Protocol in ZLB 3.10
>
>
>
> Using the latest community zen without package updates I can get to A-
> with this simple cipher string:
>
> DEFAULT:!EDH:!RC4
>
> Jurgen.
>
>
>
> On 26/10/2016 11:50, Koen Gysemans wrote:
>
> Hello David,
>
>
>
> I found http://sysadminosaurus.blogspot.be/2014/07/zen-load-
> balancer-303-perfomance-and_9.html a usefull article to upgrade and get
> SSL rating up.
>
> However I didn't get passed B rating.
>
>
>
> Kind regards,
>
>
>
> Koen Gysemans
>
>
>
> 2016-10-26 11:26 GMT+02:00 David Byrne <david.by...@vooservers.com>:
>
> Hi all,
>
>
>
> I’m trying to drop support for outdated ciphers/protocols within ZLB3.10.
> Client was previously running 3.04, however this ran OpenSSL 0.98, so did
> not support anything greater than TLSv1 (which I also want to drop support
> for.
>
>
>
> I have created 2 new LB’s running ZLB3.10, as you know these are a Debian
> Jessie base Kernel (3.16), and run OpenSSL 1.0.1k (and support up to
> TLSv1.2, which is good).
>
>
>
> For various reasons, we need to offload the SSL at the LB, so we need to
> run HTTP farms, as opposed to just using L4xNAT farms and terminating the
> SSL Cert at the LB. Within the HTTP farms, I have tried the following
> Cipher Strings to drop SSLv3 and TLSv1 support:
>
>
>
> -
> *ALL:!MD5:!ADH:RC4+RSA:+HIGH:+EXP:+eNULL:-SSLv2:-SSLv3:-TLSv1:-MEDIUM:-LOW*
>
> - *ALL:!MD5:!ADH:+HIGH:-SSLv2:-SSLv3:-TLSv1:-MEDIUM:-LOW*
>
> - *ALL:!MD5:!ADH:+HIGH:-SSLv2:-SSLv3:-TLSv1*
>
> - *And various other combinations of things to try and remove
> SSLv3 support.*
>
>
>
> I’ve somehow managed to get it to refuse to handshake on TLSv1 and 1.1,
> which is fine I guess. I was only trying to remove support for TLSv1, but
> that’s fine. My main issue is SSLv3 won’t go away… No matter what I try. If
> I force an SSLv3 connection from a neighbouring host in the test
> environment, I get the following:
>
> *[root@testvm]# openssl –s_client –connect 10.10.xx.xx:443 –ssl3*
>
> *14067300137923:error:140A90C4:SSL routines:SSL_CTX_new:null ssl method
> passed:ssl_lib.c:1878*
>
> *[root@testvm]# *
>
>
>
> (Internal IP redacted for security, but it’s the virtual IP that the
> HTTP(s) farm is bound to on the LB)
>
>
>
> Is the above saying it handshaked on SSLv3? Other places on the internet
> suggest I should get an outright handshake error (like I do with TLSv1 for
> example), example of a refused TLSv1 handshake below, interestingly, the
> TLSAv1 handshake failure does state it tried to use SSLv3 routines, but
> failed (this sounds good?):
>
> *[root@testvm]# openssl –s_client –connect 10.10.xx.xx:443 –tls1*
>
> *14006743093982:error:1409E0E5:@SSL routines:ssl3_read_bytes:sslv3 alert
> handshake failure:s3_pkt.c:1472:SSL alert number 40*
>
> *---*
>
> *No peer certificate available*
>
> *---*
>
> *[snip]*
>
> *[root@testvm]#*
>
>
>
> Any advice appreciated. Thanks.
>
> Best Regards,
> *Dave Byrne*
> Head of Technical Projects
>
> Office: 01622 524 200
> The Maidstone Studios | Vinters Business Park | New Cut Road | Maidstone |
> Kent | ME14 5NZ
>
> <https://www.vooservers.com/>
>
> <https://www.facebook.com/VooServers>
>
> <https://twitter.com/vooservers>
>
> <https://uk.linkedin.com/pub/dave-byrne/79/2aa/983>
> ------------------------------
>
> This communication and any attachments contain information which is
> confidential and may also be privileged. It is for the exclusive use of the
> intended recipient(s). If you are not the intended recipient(s) please note
> that any form of disclosure, distribution, copying or use of this
> communication or the information in it or in any attachments is strictly
> prohibited and may be unlawful. If you have received this communication in
> error, please return it with the title 'received in error' to
> david.by...@vooservers.com then delete the email and destroy any copies
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> destroyed, arrive late or incomplete, or contain viruses. We do not accept
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