[squid-users] SSL3_READ_BYTES:sslv3 alert certificate unknown

Yuri Voinov yvoinov at gmail.com
Wed Oct 28 10:57:06 UTC 2015

28.10.15 16:47, Amos Jeffries пишет:
> On 28/10/2015 11:35 p.m., Yuri Voinov wrote:
>> Hi gents.
>> I think, all of you who use Bump, seen much this messages in your
>> cache.log.
>> SSL3_READ_BYTES:sslv3 alert certificate unknown
>> AFAIK, no way to identify which CA is absent in your setup.
>> I propose to consider the following questions: how do properly support
>> SSL proxy, if you can not identify the problem certificates? Telepaths
>> sunbathing in Bali. The procedure, which currently can not quickly and
>> in any way to effectively determine such a certificate.
>> At the moment, the situation is as follows. SSL library - a thing in
>> itself, it runs by itself and does not write any logs. Squid - itself
>> and any useful information on the library does not receive but obscure
>> diagnostic messages. The possibility in any way specify the SSL library
>> diagnostic messages we have, and, as I understand it, will not.
>> So, any ideas?
> Make sure Squid is sending the whole CA chain to the remote end?
I think so, "From the remote end". If we have web-server with CA, which 
is not exists on our proxy, we must install it (which means "trust 
them", yea?) in our proxy manually.

I have idiotic idea - Squid fetch remote CA and offer us to trust and 
install interactively. :) This is, of course, clinically idiotism. :)

But - to support real Squid installation with thoursands users, I really 
want to know, which CA's not exists from my side.

Intermediate CA's is no matter - if we have root CA already, fetch 
intermediate chain is not big problem.

In this case, however, we faced unknown root CA exactly.


And so what?

Yea, I can kick all users, watch huge access.log, trying to identify 
problem URL row by row, execute curl/wget.


Do this procedure every day?

This is not the best a waste of time.

Of course, the OpenSSL developers have to tear off his hands. But what 
about us, smart and handsome? ;)

> Amos
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