Thank you both for your valuable help. I've configured the tls-dh param with a strong Diffie-Hellman group (2048 bits) and configured the cipher as Yuri specified and I was able to get pass the unknown cipher, however now I get a "SSL routines:SSL3_GET_RECORD:wrong version number". Here's the configuration I changed: cipher=HIGH:MEDIUM:RC4:3DES:!aNULL:!eNULL:!LOW:!MD5:!EXP:!PSK:!SRP:!DSS dhparams=/etc/dh-parameters.2048 options=NO_SSLv2,NO_SSLv3,SINGLE_DH_USE tls-dh=/usr/local/etc/squid/dhparams.pem
Renato Jop On Sat, Jun 25, 2016 at 11:34 AM, Yuri Voinov <yvoi...@gmail.com> wrote: > > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA256 > > > > 25.06.2016 23:09, Amos Jeffries пишет: > > On 26/06/2016 4:32 a.m., Yuri Voinov wrote: > >> > >> Amos, you are a wrong. > >> > >> No Squid-4. It's unstable and not ready for production. Whenever it's > >> features. > > > > So some beta software has bugs therefore nobody should ever use it for > > anything. I find that to be a strange and sad view of the world. > > > > Care to guess why I listed it as the last option amongst several? > > Or why 4.0.11 exists as a beta still? > > It *is* an option for the mentioned problem(s) though whatever its > utility. > Agreed. > > > > > > > >> > >> Some time ago I have the same issue and know what happens exactly. > >> > >> Skype initial connection site uses RC4 cipher. Which is disabled in most > >> squid's configuration. > > > > Your "know what happens exactly" differs from at least two other peoples > > debugging experiences with Skype. > > > > RC4 is on the hitlist for most of the big vendors for the past year or > > so. IIRC there were several Windows Updates to remove it and other > > broken bits from a lot of things over the past year. > > If Skype is still using RC4 it might be part of this problem. > I'm sure this is problem and this problem exists. MS do nothing to make > they sites/services more secure. BTW, MS Updates uses RC4 ciphers itself > this time. With strong siphers there is no way to setup WU via Squid. > I've spent much time to identify this problem in my setup and find > working workaround. > > Another part of problem is: MS often uses it's own self-signed roots, > which is exists in Windows, but nowhere else. And which has not > cross-signed by well-known root CA's. They think it make MS services > more secure. They wrong. But we can't do anything with it. So, this is > forced us to add self-signed MS roots to our Squid's CA bundles to > bump/splice. > > > > > >> > >> To make it works (as by as most M$ update sites) it's require simple use > >> this cipher's suite: > >> > >> HIGH:MEDIUM:RC4:3DES:!aNULL:!eNULL:!LOW:!MD5:!EXP:!PSK:!SRP:!DSS > >> > >> That works for me in 5 SSL bumped setups. There is no matter which squid > >> version installed. > > > > Thank you. Thats another option then. I'd rate that below trying the EC > > ciphers, and above library updates. > You are welcome. > > Just for information: MS has own IT infrastructure, with some strange > configured and non well-managed elements. I can't guarantee this > workaround will work everywhere or for every MS service. > > When I made my research, I've seen some strange security TLS > combinations on MS sites/services. I.e., for example, RC4+ECDSA+TLSv1.2. > Or, for example, RC4+MD5+TLSv1. And some similar. Very idiotic and > potentially dangerous combinations. And - they support ignores all > requests. As usual. > > To my regret, I can not order all of its users to abandon the use of > Windows. So far, in my infrastructure have machines with Windows XP. > > With this nothing can be done, it is necessary only to weaken the > security - for the sake of compatibility. > > > > > > Amos > > _______________________________________________ > > squid-users mailing list > > squid-users@lists.squid-cache.org > > http://lists.squid-cache.org/listinfo/squid-users > > -----BEGIN PGP SIGNATURE----- > Version: GnuPG v2 > > iQEcBAEBCAAGBQJXbsC5AAoJENNXIZxhPexGiFoH/jrtimBNppF1uHpVTNwOO10z > yF2APMA56S8woNZzhUNjT8+oJFPrthnMoQFrqgicjS77SBAFp9KcOV+SxOKl9+sW > OdAHDPuCD7dGnKzAdFDR1YR7Vp5IpElP1rFO5rqKXeBc3iKjq65BfF+T6atHy6cS > 0VAaluvqvHQps2wVKoYxGURDf3Y2K0lJn+qF+s2CaBwEufhzgKSvG0aUIDqTfHfK > 3EMQTpPtlTqm+pcexR+oZM1WE1hlES1khOXs51fgo6puPryqWJiHGvO4EBEfWoXF > Skval2COzcdzMvC5jjfGbMEPNGNJrYUeq/KNgppRvE2wQJ+gCLYG317decKHty0= > =8BTp > -----END PGP SIGNATURE----- > > > _______________________________________________ > squid-users mailing list > squid-users@lists.squid-cache.org > http://lists.squid-cache.org/listinfo/squid-users > >
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