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On Friday, September 26th, 2025 at 4:50 PM, Jeffrey Walton <[email protected]>
wrote:
> On Fri, Sep 26, 2025 at 3:47 PM olivares33561 via users
> [email protected] wrote:
>
> > Dear kind fedora users,
> >
> > I have a little problem with certificates. There are certificates for Mac
> > and for Windows, but none for Linux. Machine connects on some websites but
> > for others, not even advanced option works. How does one install these on
> > Linux ? Is there an idiot proof way of installing these?
> >
> > A *.DER file
> > A *.cer
> >
> > Cannot browse or update. Thanks & kind regards,
>
>
> 1. Convert the certificates to PEM format.
> - openssl x509 -in <infile.der> -inform DER -out <outfile.pem>
>
> -outform PEM
>
> 2. Copy the PEM formatted certificates to the new location
> - sudo cp *.pem /etc/pki/ca-trust/source/anchors/
>
> 3. Update the CA Store
> - sudo update-ca-trust
>
> Jeff
> --
olivares@fedora:~/Documents/Apple$ openssl x509 -in DER_Fortinet.cer -inform
DER -out DER_Fortinet.pem -outform PEM
olivares@fedora:~/Documents/Apple$ sudo cp *.pem
/etc/pki/ca-trust/source/anchors/
[sudo] password for olivares:
olivares@fedora:~/Documents/Apple$ sudo update-ca-trust
This did the job!
Now to see if I can do something similar on an android tablet.
Regards,
Antonio
--
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