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    DC Demotion Question

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    • scottalanmillerS
      scottalanmiller @tiagom
      last edited by

      @tiagom said in DC Demotion Question:

      For some reason i though that cached credentials expire, which is obviously not the case. Don't know where i picked that up from.

      They do, or can, but it isn't fast. Certainly not in the weeks category. It's configurable on each workstation via GPO. But by default, they are designed to let you work offline for a very, very long time. Remember that workers who go out of the office need to be able to keep working on laptops without network access for potentially months by default.

      1 Reply Last reply Reply Quote 1
      • coliverC
        coliver @tiagom
        last edited by

        @tiagom said in DC Demotion Question:

        For some reason i though that cached credentials expire, which is obviously not the case. Don't know where i picked that up from.

        I don't think, by default, cached credentials expire.

        scottalanmillerS 1 Reply Last reply Reply Quote 0
        • scottalanmillerS
          scottalanmiller @coliver
          last edited by

          @coliver said in DC Demotion Question:

          @tiagom said in DC Demotion Question:

          For some reason i though that cached credentials expire, which is obviously not the case. Don't know where i picked that up from.

          I don't think, by default, cached credentials expire.

          Maybe they never do. I've got one system that's been off of AD for years and still works on cached creds, but it is 2003.

          1 Reply Last reply Reply Quote 0
          • T
            tiagom
            last edited by tiagom

            I looked it up before i posted and it doesn't seem possible to make cached credentials expire. That's why i found it so odd that i thought the did expire.

            scottalanmillerS 1 Reply Last reply Reply Quote 1
            • scottalanmillerS
              scottalanmiller @tiagom
              last edited by

              @tiagom said in DC Demotion Question:

              I looked it up before i posted and it doesn't seem possible to make cached credentials expire. That's why i found it so odd that i thought the did expire.

              Well I thought that there was a way to expire them, too. That is very weird.

              1 Reply Last reply Reply Quote 0
              • scottalanmillerS
                scottalanmiller
                last edited by

                https://social.technet.microsoft.com/Forums/sharepoint/en-US/87e84872-c321-4b8c-b13d-0d60a003c3d3/how-long-does-windows-cache-domain-user-passwords?forum=winserversecurity

                Yup, looks like once you get a machine off of AD physically, you can attack it forever.

                travisdh1T 1 Reply Last reply Reply Quote 0
                • travisdh1T
                  travisdh1 @scottalanmiller
                  last edited by

                  @scottalanmiller said in DC Demotion Question:

                  https://social.technet.microsoft.com/Forums/sharepoint/en-US/87e84872-c321-4b8c-b13d-0d60a003c3d3/how-long-does-windows-cache-domain-user-passwords?forum=winserversecurity

                  Yup, looks like once you get a machine off of AD physically, you can attack it forever.

                  Wow, just, wow.

                  scottalanmillerS 1 Reply Last reply Reply Quote 0
                  • T
                    tiagom
                    last edited by tiagom

                    Theres some built in safety from my understanding. The cached credentials are hashed twice, so at best they would only have access to that computer, it does not comprise the security of AD.

                    1 Reply Last reply Reply Quote 0
                    • scottalanmillerS
                      scottalanmiller @travisdh1
                      last edited by

                      @travisdh1 yeah, I don't like that.

                      1 Reply Last reply Reply Quote 0
                      • BRRABillB
                        BRRABill @dafyre
                        last edited by

                        @dafyre said in DC Demotion Question:

                        As far as I can tell, you can use the Windows RSAT stuff to manage the SAMBA4 domain controllers, GPOs should work... Dang.. I need to spin one up now, lol.

                        Let us know how that goes.

                        1 Reply Last reply Reply Quote 1
                        • wirestyle22W
                          wirestyle22 @dafyre
                          last edited by

                          @dafyre said in DC Demotion Question:

                          As far as I can tell, you can use the Windows RSAT stuff to manage the SAMBA4 domain controllers, GPOs should work... Dang.. I need to spin one up now, lol.

                          Interested in seeing this

                          BRRABillB 1 Reply Last reply Reply Quote 0
                          • BRRABillB
                            BRRABill @wirestyle22
                            last edited by

                            @wirestyle22 said

                            Interested in seeing this

                            @scottalanmiller said he is going to do a writeup someday (soon?) on this process. (Replacing AD with Samba.)

                            I'll probably give it a go. We're down to less than 20 employees, so if it burns, it burns.

                            wirestyle22W 1 Reply Last reply Reply Quote 1
                            • wirestyle22W
                              wirestyle22 @BRRABill
                              last edited by

                              @BRRABill said in DC Demotion Question:

                              @wirestyle22 said

                              Interested in seeing this

                              @scottalanmiller said he is going to do a writeup someday (soon?) on this process. (Replacing AD with Samba.)

                              I'll probably give it a go. We're down to less than 20 employees, so if it burns, it burns.

                              Is SAMBA4 better in a windows only environment or is it simply the best solution for hybrid environments?

                              travisdh1T 1 Reply Last reply Reply Quote 0
                              • travisdh1T
                                travisdh1 @wirestyle22
                                last edited by

                                @wirestyle22 said in DC Demotion Question:

                                @BRRABill said in DC Demotion Question:

                                @wirestyle22 said

                                Interested in seeing this

                                @scottalanmiller said he is going to do a writeup someday (soon?) on this process. (Replacing AD with Samba.)

                                I'll probably give it a go. We're down to less than 20 employees, so if it burns, it burns.

                                Is SAMBA4 better in a windows only environment or is it simply the best solution for hybrid environments?

                                In a Windows only environment, I don't know if it really makes sense. Assuming you have the license in place already, why not use the native platform? Doesn't mean a SAMBA DC doesn't make all kinds of sense when you don't have the licensing in place already.

                                wirestyle22W scottalanmillerS 2 Replies Last reply Reply Quote 0
                                • wirestyle22W
                                  wirestyle22 @travisdh1
                                  last edited by wirestyle22

                                  @travisdh1 said in DC Demotion Question:

                                  @wirestyle22 said in DC Demotion Question:

                                  @BRRABill said in DC Demotion Question:

                                  @wirestyle22 said

                                  Interested in seeing this

                                  @scottalanmiller said he is going to do a writeup someday (soon?) on this process. (Replacing AD with Samba.)

                                  I'll probably give it a go. We're down to less than 20 employees, so if it burns, it burns.

                                  Is SAMBA4 better in a windows only environment or is it simply the best solution for hybrid environments?

                                  In a Windows only environment, I don't know if it really makes sense. Assuming you have the license in place already, why not use the native platform? Doesn't mean a SAMBA DC doesn't make all kinds of sense when you don't have the licensing in place already.

                                  Well, you need to maintain said licensing (ie refreshes etc). I'd rather move to SAMBA and use the licensing for other stuff or spend less if possible

                                  1 Reply Last reply Reply Quote 2
                                  • scottalanmillerS
                                    scottalanmiller @travisdh1
                                    last edited by

                                    @travisdh1 said in DC Demotion Question:

                                    @wirestyle22 said in DC Demotion Question:

                                    @BRRABill said in DC Demotion Question:

                                    @wirestyle22 said

                                    Interested in seeing this

                                    @scottalanmiller said he is going to do a writeup someday (soon?) on this process. (Replacing AD with Samba.)

                                    I'll probably give it a go. We're down to less than 20 employees, so if it burns, it burns.

                                    Is SAMBA4 better in a windows only environment or is it simply the best solution for hybrid environments?

                                    In a Windows only environment, I don't know if it really makes sense. Assuming you have the license in place already, why not use the native platform? Doesn't mean a SAMBA DC doesn't make all kinds of sense when you don't have the licensing in place already.

                                    They have licensing for 2003. This is a free update.

                                    BRRABillB 1 Reply Last reply Reply Quote 0
                                    • BRRABillB
                                      BRRABill @scottalanmiller
                                      last edited by

                                      @scottalanmiller said

                                      They have licensing for 2003. This is a free update.

                                      Huh?

                                      wirestyle22W 1 Reply Last reply Reply Quote 0
                                      • wirestyle22W
                                        wirestyle22 @BRRABill
                                        last edited by

                                        @BRRABill said in DC Demotion Question:

                                        @scottalanmiller said

                                        They have licensing for 2003. This is a free update.

                                        Huh?

                                        He means I'm always going to have licensing in place

                                        1 Reply Last reply Reply Quote 1
                                        • BRRABillB
                                          BRRABill
                                          last edited by

                                          Well, I DCPROMOed the one physical DC last night. Nothing seems to have burned down.

                                          I was having some DNS issues, but I think it was due to the fact that my machine was pointing to the demoted DC (which obviously had the DNS role installed) and it had been gutted by DCPROMO. I removed the role and everything seems OK thus far.

                                          Though very few users are here. I'll feel better by like 10AM.

                                          JaredBuschJ 1 Reply Last reply Reply Quote 1
                                          • JaredBuschJ
                                            JaredBusch @BRRABill
                                            last edited by

                                            @BRRABill said in DC Demotion Question:

                                            Well, I DCPROMOed the one physical DC last night. Nothing seems to have burned down.

                                            I was having some DNS issues, but I think it was due to the fact that my machine was pointing to the demoted DC (which obviously had the DNS role installed) and it had been gutted by DCPROMO. I removed the role and everything seems OK thus far.

                                            Though very few users are here. I'll feel better by like 10AM.

                                            Did you update DHCP to no longer pass out the old DC as a DNS option?

                                            Did you go through all the static IP devices and remove the old DC DNS info from them?

                                            BRRABillB 1 Reply Last reply Reply Quote 0
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