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    Linux Domain Controller

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    • scottalanmillerS
      scottalanmiller @A Former User
      last edited by

      @thecreativeone91 said:

      Tinc is a pretty neat mesh VPN which has less overhead.
      You really want all static IPs for it though.

      http://www.tinc-vpn.org/

      You always need that somewhere. Pertino handles it by actually being an elaborate, hosted hub and spoke system that mimics a full mesh. You can do the same thing with OpenVPN or even IPSec, just takes a lot of work.

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

        @scottalanmiller said:

        IPSec is definitely lower overhead when available.

        IPSEC is lower overhead because it is has been offloaded in most cases.

        If you are not offloading the encryption in a router, the overhead between the two is not all that different.

        I use OpenVPN as the site-to-site method to connect the ERL at most clients. IPSEC always seems to have issues. For most SMB this is good enough as they will never saturate the OpenVPN link.

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

          Yes, IPSec is such a pain to deal with. We used to have a huge site to site mesh using Netgear VPN hardware. That was well over a decade ago, though.

          Now I feel old.

          1 Reply Last reply Reply Quote 0
          • JaredBuschJ
            JaredBusch
            last edited by

            For the record, an Ubiquiti EdgeMax Lite will cap out an OpenVPN connection at about 10-14mbps because it will take up all the processor.

            So unless you are going to push more than that, there is just no reason to worry about it.

            1 Reply Last reply Reply Quote 1
            • S
              Sparkum
              last edited by

              Not talking much traffic at all.

              Honestly might not even put all devices on it.

              Going to still run local DC, so I'm thinking maybe three cloudatcost, my main desktop, and local DC all on VPN

              So maybe 5, might push it to one or two more computers but nothing really intensive.

              Would/Should I be able to host my dc on CentOS7 as well as OpenVPN? Or would that require two? (Dev1)

              Thanks

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

                Yes, you can put OpenVPN aggregator on the same VM as your DC, that's no problem.

                S 1 Reply Last reply Reply Quote 0
                • S
                  Sparkum @scottalanmiller
                  last edited by Sparkum

                  @scottalanmiller

                  This is more so what I meant.

                  Load.JPG

                  Not typically in the 80's but it's usually floating around the 60's

                  (Just did a restart so I'm assuming thats why its spiking)

                  Edit: However; its definately not dropping from 87% now

                  scottalanmillerS 1 Reply Last reply Reply Quote 0
                  • S
                    Sparkum
                    last edited by

                    Just doing a quick google search found this how to

                    https://www.digitalocean.com/community/tutorials/how-to-setup-and-configure-an-openvpn-server-on-centos-7

                    I assume for the most part this should be fine minus not using google'd DNS records

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

                      @Sparkum said:

                      @scottalanmiller

                      This is more so what I meant.

                      Load.JPG

                      Not typically in the 80's but it's usually floating around the 60's

                      (Just did a restart so I'm assuming thats why its spiking)

                      Edit: However; its definately not dropping from 87% now

                      There is another thread on this. That is a completely worthless graph and should be removed from their site. It was created by someone who didn't know Linux and it uses the most common newbie Linux admin mistake that there is - reading the output of the "free" command incorrectly. Your system is not using 87%, likely more like 20-30%.

                      Show the completely output of **free -m"" and we will show you how to read the real memory utilization numbers.

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

                        @Sparkum said:

                        Just doing a quick google search found this how to

                        https://www.digitalocean.com/community/tutorials/how-to-setup-and-configure-an-openvpn-server-on-centos-7

                        I assume for the most part this should be fine minus not using google'd DNS records

                        I would expect that to be fine. I run an ELK stack on Digital Ocean and our FreeBSD lab system.

                        1 Reply Last reply Reply Quote 0
                        • S
                          Sparkum @scottalanmiller
                          last edited by

                          @scottalanmiller

                          Haha thanks thats alot better and brings me confidence in my box back.

                          Especially after everyone said a Samba server was one of the lowest resource wise.

                          free.JPG

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

                            @Sparkum said:

                            @scottalanmiller

                            Haha thanks thats alot better and brings me confidence in my box back.

                            Especially after everyone said a Samba server was one of the lowest resource wise.

                            free.JPG

                            Argh, I hate that modified view. The simple "free" number is gone now.

                            BUT, the used number is correct. You are USING 65MB. Seriously, just 65MB. So you are in pretty good share. Out of 489MB total, 65MB is used. Leaving you with 424MB free!

                            Linux is awesome on resources 😉

                            1 Reply Last reply Reply Quote 0
                            • S
                              Sparkum
                              last edited by

                              Gah!

                              Not sure what I did yesterday but now I cant contact any mirrors or ping anything!

                              Come on Linux be my friend!

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

                                @Sparkum said:

                                Gah!

                                Not sure what I did yesterday but now I cant contact any mirrors or ping anything!

                                Come on Linux be my friend!

                                nslookup or dig is going to be your friend here. Check your DNS settings. Something is not resolving.

                                1 Reply Last reply Reply Quote 0
                                • S
                                  Sparkum
                                  last edited by Sparkum

                                  Is there any chance this isnt on me?

                                  When I first booted initially I got this as well.

                                  And I dont beleve I've changed networks settings to date?

                                  Just changed DNS (temporarily) to google's DNS and same results.

                                  Also keep loosing connection to the console this morning.

                                  1 Reply Last reply Reply Quote 1
                                  • S
                                    Sparkum
                                    last edited by

                                    Yep was definitely on their end, I wasnt able to get into the console for about 20 minutes. Was about to submit a ticket and there was a related article, which seemed exactly like my problem. Waiting a little more and everything works now (as origional settings)

                                    1 Reply Last reply Reply Quote 1
                                    • ?
                                      A Former User
                                      last edited by

                                      I've never been able to full saturate gigabit links with OpenVPN. But I have with IPSEC and Tinc and that was using Core 2 duo era cpu's. Cisco stuff in $3k range couldn't do it.

                                      scottalanmillerS 1 Reply Last reply Reply Quote 0
                                      • scottalanmillerS
                                        scottalanmiller @A Former User
                                        last edited by

                                        @thecreativeone91 said:

                                        Cisco stuff in $3k range couldn't do it.

                                        That's like the lowest bar in the industry.

                                        1 Reply Last reply Reply Quote 0
                                        • S
                                          Sparkum @Sparkum
                                          last edited by

                                          @Sparkum

                                          So how should I have my DNS settings,

                                          If I leave them as CloudatCost default I cant ping anything, if I change them to what they would be once I get them added to the domain, nothing, if I change them to google's DNS I can see the outside world.

                                          I assume this is not a good idea though? Or is there no real downside?

                                          Would I have it set as google's DNS until I can get OpenVPN up and going?

                                          ? 1 Reply Last reply Reply Quote 0
                                          • ?
                                            A Former User @Sparkum
                                            last edited by

                                            @Sparkum said:

                                            @Sparkum

                                            So how should I have my DNS settings,

                                            If I leave them as CloudatCost default I cant ping anything, if I change them to what they would be once I get them added to the domain, nothing, if I change them to google's DNS I can see the outside world.

                                            I assume this is not a good idea though? Or is there no real downside?

                                            Would I have it set as google's DNS until I can get OpenVPN up and going?

                                            I would use the DHCP set ones until you get the VPN setup. Then you will want DNS lookups on the Domain over the VPN. Not sure why C@C's DNS isn't working for you. I haven't had issues with it.

                                            S 1 Reply Last reply Reply Quote 0
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