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    OpenVPN remove client

    Scheduled Pinned Locked Moved OpenVPN
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    • V Offline
      viragomann
      last edited by

      No, you choose the CA (issuer) here which is signing the client cert.

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      • A Offline
        Allwan
        last edited by

        so where do i remove the user certificate?

        V 1 Reply Last reply Reply Quote 0
        • V Offline
          viragomann @Allwan
          last edited by viragomann

          @Allwan
          Revoke not remove! The cert must still exist on pfSense.

          05187b53-4843-4489-94ec-22a4cfded21a-grafik.png

          If you haven't already any, add a Certificate Revocation List (CRL) to your CA.
          Then you're able to add user certs to this list which you want to revoke, so that the cert can no longer be used to authenticate.

          Add the CRL to your OpenVPN servers settings:

          16395464-65e8-44dd-a63b-552adfde208f-grafik.png

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          • A Offline
            Allwan
            last edited by

            But I have deleted the certificate from the list of certificates suddenly I cannot revoke it.

            V 1 Reply Last reply Reply Quote 0
            • V Offline
              viragomann @Allwan
              last edited by

              @Allwan
              Then you're lost. You need the certificate to revoke it.

              The OpenVPN is configured to accept any user cert which is issued by the CA you've set, as long it isn't in the selected CRL.

              Possibly you can restore the cert from a backup.

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              • A Offline
                Allwan
                last edited by

                @viragomann said in OpenVPN remove client:

                Then you're lost. You need the certificate to revoke it.
                The OpenVPN is configured to accept any user cert which is issued by the CA you've set, as long it isn't in the selected CRL.
                Possibly you can restore the cert from a backup.

                Very well i understand
                thanks anyway

                V 1 Reply Last reply Reply Quote 0
                • V Offline
                  viragomann @Allwan
                  last edited by

                  @Allwan

                  pfSense automatically saves config history:

                  20a3f6d0-cfbd-411f-acbe-8347a1800109-grafik.png

                  Possibly you can temporarily revert to a config where the cert still exists, use the cert manager to export it and the key and after revert back to the actual config.

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                  • A Offline
                    Allwan
                    last edited by

                    ah great !!!!
                    very happy, I was able to find him.

                    thanks you

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                    • A Offline
                      Allwan
                      last edited by

                      But I still have a connection.

                      8ac6308d-5077-4a4d-b715-3859c045ce31-image.png

                      d73166c7-eed6-41cf-b21d-d126bf31d8bc-image.png

                      V 1 Reply Last reply Reply Quote 0
                      • V Offline
                        viragomann @Allwan
                        last edited by

                        @Allwan
                        After revoking the cert, the client can still connect?
                        Existing connections are not cut when adding the respective cert to the CRL.

                        Did you assing the CRL the server?

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                        • A Offline
                          Allwan
                          last edited by

                          i will see

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                          • V Offline
                            viragomann
                            last edited by

                            Just kill the connection:

                            dea18001-3963-459f-9e59-eb407d135525-grafik.png

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                            • bingo600B Offline
                              bingo600
                              last edited by

                              Just for my understanding.

                              If you're changing the users passwd in the user manager & kill the connection.
                              Would that not prevent the user to login again ?
                              If not , then what good is the uid/pwd ??

                              I'd still revoke the cert , if i needed to ban a user permaneltly.

                              But for a temporarily disable (enable) login , i had hoped to use the
                              User Expiration date.

                              Ie. a Consultant that would have 1 week access for this specific task , and might need access later on.

                              /Bingo

                              If you find my answer useful - Please give the post a šŸ‘ - "thumbs up"

                              pfSense+ 23.05.1 (ZFS)

                              QOTOM-Q355G4 Quad Lan.
                              CPUĀ  : Core i5 5250U, Ram : 8GB Kingston DDR3LV 1600
                              LANĀ  : 4 x Intel 211, DiskĀ  : 240G SAMSUNG MZ7L3240HCHQ SSD

                              V 1 Reply Last reply Reply Quote 0
                              • V Offline
                                viragomann @bingo600
                                last edited by

                                @bingo600 said in OpenVPN remove client:

                                Would that not prevent the user to login again ?

                                Sure, it does, when the server is in a "User auth" mode.

                                You can also revoke a user cert temporarily. After removing from the CRL it is accepted again by the server.

                                Also consider, when "Strict User-CN Matching" in the server settings is not checked it will be possible for a user to use another ones cert for authentication.

                                bingo600B 1 Reply Last reply Reply Quote 0
                                • bingo600B Offline
                                  bingo600 @viragomann
                                  last edited by

                                  @viragomann said in OpenVPN remove client:

                                  @bingo600 said in OpenVPN remove client:

                                  Would that not prevent the user to login again ?

                                  Sure, it does, when the server is in a "User auth" mode.

                                  You can also revoke a user cert temporarily. After removing from the CRL it is accepted again by the server.

                                  Also consider, when "Strict User-CN Matching" in the server settings is not checked it will be possible for a user to use another ones cert for authentication.

                                  I'm using this (SSL/TLS + User auth)
                                  d81e0a60-2b25-420c-87bb-1f6f1175dad9-image.png

                                  And have
                                  9a07cda2-d9ab-4b29-9a92-883ca7b7cdee-image.png

                                  Thanx for the confirmation

                                  /Bingo

                                  If you find my answer useful - Please give the post a šŸ‘ - "thumbs up"

                                  pfSense+ 23.05.1 (ZFS)

                                  QOTOM-Q355G4 Quad Lan.
                                  CPUĀ  : Core i5 5250U, Ram : 8GB Kingston DDR3LV 1600
                                  LANĀ  : 4 x Intel 211, DiskĀ  : 240G SAMSUNG MZ7L3240HCHQ SSD

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