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    no free --ifconfig-pool addresses are available

    Scheduled Pinned Locked Moved OpenVPN
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    • GertjanG Offline
      Gertjan @albertmiclat
      last edited by Gertjan

      @albertmiclat said in no free --ifconfig-pool addresses are available:

      is only 67.

      @albertmiclat said in no free --ifconfig-pool addresses are available:

      ifconfig-pool 10.99.26.10 10.99.26.253

      253 - 10 = 243

      243 / 4 = 61

      Just a wild guess : every client eat up 4 IPs in from pool ?

      No "help me" PM's please. Use the forum, the community will thank you.
      Edit : and where are the logs ??

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      • A Offline
        albertmiclat
        last edited by

        Just a wild guess : every client eat up 4 IPs in from pool ? not sure about this, how is this possible and how to check? is there any setting i need to change?

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        • GertjanG Offline
          Gertjan
          last edited by

          https://openvpn.net/community-resources/reference-manual-for-openvpn-2-4/

          Look at the openvpn server config file - the file itself (/var/etc/openvpn/serverX.conf where X is a number.
          Does it contain

          .....
topology subnet
.....

          No "help me" PM's please. Use the forum, the community will thank you.
          Edit : and where are the logs ??

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          • A Offline
            albertmiclat
            last edited by

            here is my server config

            #######
            dev ovpns6
            verb 1
            dev-type tun
            tun-ipv6
            dev-node /dev/tun6
            writepid /var/run/openvpn_server6.pid
            #user nobody
            #group nobody
            script-security 3
            daemon
            keepalive 10 60
            ping-timer-rem
            persist-tun
            persist-key
            proto udp
            cipher AES-128-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 202.55.95.114
            tls-server
            server 10.99.26.0 255.255.255.0
            client-config-dir /var/etc/openvpn-csc/server6
            username-as-common-name
            auth-user-pass-verify "/usr/local/sbin/ovpn_auth_verify user c2dkYzAzLHNnZasdfasdfSxMb2NhbCBEYXRhYmFzZQ== false server6 1194" via-env
            tls-verify "/usr/local/sbin/ovpn_auth_verify tls 'sg.ong-ong.com' 1"
            lport 1194
            management /var/etc/openvpn/server6.sock unix
            max-clients 100
            push "route 10.25.0.0 255.255.0.0"
            push "dhcp-option DOMAIN ong-ong.internal"
            push "dhcp-option DNS 10.25.1.7"
            push "dhcp-option DNS 10.25.1.9"
            push "dhcp-option NTP 10.25.1.7"
            push "dhcp-option NTP 10.25.1.9"
            push "redirect-gateway def1"
            duplicate-cn
            ca /var/etc/openvpn/server6.ca
            cert /var/etc/openvpn/server6.cert
            key /var/etc/openvpn/server6.key
            dh /etc/dh-parameters.1024
            tls-auth /var/etc/openvpn/server6.tls-auth 0
            comp-lzo yes
            persist-remote-ip
            float
            topology net30
            push "route 10.84.3.0 255.255.255.0"
            push "route 10.100.0.0 255.255.255.0"
            push "route 10.60.0.0 255.255.0.0"
            push "route 10.88.1.0 255.255.255.0"
            push "route 10.62.21.0 255.255.255.0"
            push "route 10.191.0.0 255.255.255.0"
            push "route 10.66.0.0 255.255.0.0"
            push "route 10.86.28.0 255.255.255.0"
            push "route 10.65.2.0 255.255.255.0"
            push "ping-exit 600"

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            • RicoR Offline
              Rico LAYER 8 Rebel Alliance
              last edited by

              topology net30 is using 4 IPs per client.

              -Rico

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              • A Offline
                albertmiclat
                last edited by

                Hi Rico,

                Is there any advice to fix this?

                Thanks,
                A

                1 Reply Last reply Reply Quote 0
                • RicoR Offline
                  Rico LAYER 8 Rebel Alliance
                  last edited by

                  Expand your tunnel network or switch to topology subnet which is the default mode for like 5 years.

                  -Rico

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                  • A Offline
                    albertmiclat
                    last edited by

                    Hi Rico,

                    I will probably try expanding my tunnel network to /22.

                    Thanks,
                    A

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                    • johnpozJ Offline
                      johnpoz LAYER 8 Global Moderator
                      last edited by

                      I see some other problems in your config as well..

                      comp-lzo yes

                      Been a huge known security issue with openvpn and compression for quite some time.. "Voracle Attack"
                      https://community.openvpn.net/openvpn/wiki/VORACLE

                      I would move to aes-gcm vs cbc

                      I would really suggest you read through
                      https://docs.netgate.com/pfsense/en/latest/vpn/scaling.html

                      Great doc with lots of great info about scaling and improving your vpn overall..

                      An intelligent man is sometimes forced to be drunk to spend time with his fools
                      If you get confused: Listen to the Music Play
                      Please don't Chat/PM me for help, unless mod related
                      SG-4860 25.07.1 | Lab VMs 2.8, 25.07.1

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                      • A Offline
                        albertmiclat
                        last edited by

                        Thanks @Gertjan @johnpoz @Rico

                        i did some changes accordingly.

                        so far all user are now able to connect w/out any issue.

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                        • RicoR Offline
                          Rico LAYER 8 Rebel Alliance
                          last edited by

                          Glad you have it working.

                          -Rico

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