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    no free --ifconfig-pool addresses are available

    Scheduled Pinned Locked Moved OpenVPN
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    • A
      albertmiclat
      last edited by

      Guys,

      Any advice to this issue..

      I tried to add this parameters on server.conf and restarted the service but it doesn't help.

      ifconfig-pool 10.99.26.10 10.99.26.253

      Saw one write-up to add this line.

      Thanks,
      A

      1 Reply Last reply Reply Quote 0
      • GertjanG
        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 ??

        1 Reply Last reply Reply Quote 0
        • A
          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?

          1 Reply Last reply Reply Quote 0
          • GertjanG
            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 ??

            1 Reply Last reply Reply Quote 0
            • A
              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"

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

                topology net30 is using 4 IPs per client.

                -Rico

                1 Reply Last reply Reply Quote 0
                • A
                  albertmiclat
                  last edited by

                  Hi Rico,

                  Is there any advice to fix this?

                  Thanks,
                  A

                  1 Reply Last reply Reply Quote 0
                  • RicoR
                    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

                    1 Reply Last reply Reply Quote 0
                    • A
                      albertmiclat
                      last edited by

                      Hi Rico,

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

                      Thanks,
                      A

                      1 Reply Last reply Reply Quote 0
                      • johnpozJ
                        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 24.11 | Lab VMs 2.8, 24.11

                        1 Reply Last reply Reply Quote 1
                        • A
                          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.

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

                            Glad you have it working.

                            -Rico

                            1 Reply Last reply Reply Quote 0
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