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    OpenVPN Disconnects every 5-10 minutes

    Scheduled Pinned Locked Moved OpenVPN
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    • C
      CM350
      last edited by

      It's a new server, so it should be capable of doing that. If I look at the stats, cpu usage is 1-10% and memory is 23% so it is not in full load :-)

      Do you need more information?

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      • C
        CM350
        last edited by

        I checked it again today and found this:
        Jul 30 09:30:58 php-fpm[77172]: /rc.openvpn: OpenVPN: One or more OpenVPN tunnel endpoints may have changed its IP. Reloading endpoints that may use WANGW.

        I guess it started here, but don't know what it means?

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        • ?
          Guest
          last edited by

          Jul 30 09:30:58    php-fpm[77172]: /rc.openvpn: OpenVPN: One or more OpenVPN tunnel endpoints may have changed its IP. Reloading endpoints that may use WANGW.
          

          I think that this VPN endpoints got a new IP address by or from their ISPs!
          They have dynamic IPs and no static (fixed) ones or a DynDNS account!  :-\

          I guess it started here, but don't know what it means?

          For setting up VPNs you should be sure that both endpoints of a VPN connection are
          sorted with static IP addresses or DynDNS accounts. If this will be so called road worrier
          set ups or the VPN endpoints will be mobile clients this might be not worse and is running
          smooth but if the VPN endpoints are also pfSense firewalls or VPN Servers this will be then
          a problem.  :o

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          • C
            CM350
            last edited by

            @BlueKobold:

            Jul 30 09:30:58    php-fpm[77172]: /rc.openvpn: OpenVPN: One or more OpenVPN tunnel endpoints may have changed its IP. Reloading endpoints that may use WANGW.
            

            I think that this VPN endpoints got a new IP address by or from their ISPs!
            They have dynamic IPs and no static (fixed) ones or a DynDNS account!  :-\

            I guess it started here, but don't know what it means?

            For setting up VPNs you should be sure that both endpoints of a VPN connection are
            sorted with static IP addresses or DynDNS accounts. If this will be so called road worrier
            set ups or the VPN endpoints will be mobile clients this might be not worse and is running
            smooth but if the VPN endpoints are also pfSense firewalls or VPN Servers this will be then
            a problem.  :o

            The pfsense (OpenVPN Server) is connected to a modem which has a static WAN IP.

            The clients are indeed laptops/desktops with the OpenVPN application with a dynamic ip. But I can't imagine they change ip every 5 minutes :).

            Yesterday I got sick of it and rebooted the pfsense. After this the VPNclients stayed connected for over an hour (maybe 2). But now it's back to reconnecting like every 5 minutes :(.

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            • ?
              Guest
              last edited by

              But now it's back to reconnecting like every 5 minutes

              You can have a closer look to the OpenVPN settings and search the lease time for the
              given internal IP, after connecting to the OpenVPN server. But not on the client side.

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              • C
                CM350
                last edited by

                you mean the vpn ip? I have no idea how I should do that?

                here is my server.conf file

                dev ovpns1
                verb 3
                dev-type tun
                dev-node /dev/tun1
                writepid /var/run/openvpn_server1.pid
                #user nobody
                #group nobody
                script-security 3
                daemon
                keepalive 10 60
                ping-timer-rem
                persist-tun
                persist-key
                proto udp
                cipher AES-256-CBC
                auth SHA1
                up /usr/local/sbin/ovpn-linkup
                down /usr/local/sbin/ovpn-linkdown
                client-connect /usr/local/sbin/openvpn.attributes.sh
                client-disconnect /usr/local/sbin/openvpn.attributes.sh
                local 192.168.200.2
                tls-server
                server 10.221.14.0 255.255.255.0
                client-config-dir /var/etc/openvpn-csc
                username-as-common-name
                auth-user-pass-verify "/usr/local/sbin/ovpn_auth_verify user 'Local Database' true server1" via-env
                tls-verify "/usr/local/sbin/ovpn_auth_verify tls 'CustomerSRVCA' 1 "
                lport 1194
                management /var/etc/openvpn/server1.sock unix
                push "route 10.220.14.0 255.255.255.0"
                push "dhcp-option DOMAIN local.customer.be"
                push "dhcp-option DNS 10.220.14.82"
                push "register-dns"
                ca /var/etc/openvpn/server1.ca
                cert /var/etc/openvpn/server1.cert
                key /var/etc/openvpn/server1.key
                dh /etc/dh-parameters.2048
                tls-auth /var/etc/openvpn/server1.tls-auth 0
                comp-lzo no
                persist-remote-ip
                float
                topology subnet

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                • C
                  CM350
                  last edited by

                  Okay, did some more testing.

                  Created a new OpenVPN server, changed it to TCP port 1195.

                  Looks like a breakthrough, now it is connected for almost 3 hours without a disconnect.

                  It doesn't make sense though…

                  I'll keep you posted

                  B 1 Reply Last reply Reply Quote 0
                  • C
                    CM350
                    last edited by

                    After hours of testing it looks solved.

                    We are slowly going to update the clients their vpn files to the new port.

                    Can someone tell me this is even possible? Is this solution even recommended?

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                    • D
                      divsys
                      last edited by

                      Well using a port other than the default 1194 is definitely possible and if it solves your problem, I'd say it's advisable…

                      I often use ports other than 1194 for OpenVPN if only to avoid conflicts/blocking/port spying/etc.

                      Just a guess on my part but your scenario could easily involve ISP "managing" OpenVPN traffic or possibly some DOS/malware/spying trying out your OpenVPN port.

                      -jfp

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                      • C
                        CM350
                        last edited by

                        @divsys:

                        Well using a port other than the default 1194 is definitely possible and if it solves your problem, I'd say it's advisable…

                        I often use ports other than 1194 for OpenVPN if only to avoid conflicts/blocking/port spying/etc.

                        Just a guess on my part but your scenario could easily involve ISP "managing" OpenVPN traffic or possibly some DOS/malware/spying trying out your OpenVPN port.

                        A possibility yes. But not sure.

                        I've putted the 2 mac clients on another server, maybe it's them (don't have a lot of experience with MAC clients)

                        But it still works like a train, so client is happy and we are happy ;-) !

                        Thanks all!

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                        • B
                          billsecond @CM350
                          last edited by

                          @CM350 Changing from UDP to TCP also worked for me. Same port is fine. But I think the ISP may have been have been having issues with UDP.

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