On 13.10.2019 18:01, Michael Tremer wrote:
> It is fixed again.

Yes, it's fixed - tested and confirmed. Thanks again! ;-)

>> On 13 Oct 2019, at 12:17, Matthias Fischer <matthias.fischer(a)ipfire.org> wrote:
>> 
>> On 13.10.2019 11:31, peter.mueller(a)ipfire.org wrote:
>>> Hello Matthias,
>> 
>> Hi Peter,
>> 
>>> thanks for noticing this.
>> 
>> No problem - should I open a "Bugzilla" for this?
> 
> Yes, you can do that if you want to in the Infrastructure section.
> 
>> 
>> Best,
>> Matthias
>> 
>>> This happens if a server presents a certificate with the "OCSP must stapling"
>>> flag set, but does not supply valid OCSP information at the same time. Since
>>> OCSP has some major disadvantages if used by clients (DoS vs. fail-open
>>> behaviour, privacy issues, etc.), "OCSP must stapling" is generally considered
>>> to be a better option.
>>> 
>>> As far as I am concerned, we have those flag set on all of our certificates
>>> except for mail01, as mail server usually do not support OCSP.
>>> 
>>> I can confirm visiting https://patchwork.ipfire.org/ shows the same error,
>>> in several browsers and from several countries. Forum, Wiki, et al. seem to
>>> work fine. This looks like a server configuration issue, the certificates
>>> issued by Let's Encrypt are fine.
>>> 
>>> @Michael: Could you have a look at this?
>>> 
>>> Thanks, and best regards,
>>> Peter Müller
>>> 
>>> 
>>>> Hi,
>>>> 
>>>> today, suddenly patchwork.ipfire.org stopped working. Reloading the page
>>>> several times doesn't help. Firefox 69.0.3 keeps telling me:
>>>> 
>>>> ***SNIP***
>>>> Secure Connection Failed
>>>> 
>>>> An error occurred during a connection to patchwork.ipfire.org. A
>>>> required TLS feature is missing. Error code:
>>>> MOZILLA_PKIX_ERROR_REQUIRED_TLS_FEATURE_MISSING
>>>> 
>>>>    The page you are trying to view cannot be shown because the
>>>> authenticity of the received data could not be verified.
>>>>    Please contact the website owners to inform them of this problem.
>>>> ***SNAP***
>>>> 
>>>> Setting "security.ssl.enable_ocsp_must_staple" in about:config to
>>>> "false" temporarily fixes this, but could it be that there is a problem
>>>> with the "Let's Encrypt" certificate!?
>>>> 
>>>> Can anyone confirm?
>>>> 
>>>> Best,
>>>> Matthias
>>>> 
>>>> P.S.: Possible solution (german!)
>>>> =>
>>>> https://www.kuketz-blog.de/nginx-aktivierung-von-ocsp-must-staple-ohne-timeout/
>>>> 
>>> 
>> 
> 
>