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    Connected to OpenVPN, but no network except for 1 IP Address

    Scheduled Pinned Locked Moved OpenVPN
    22 Posts 5 Posters 1.6k Views
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    • V
      viragomann
      last edited by

      That's the routing table from pfSense, the server, not from the client, who has trouble with accessing something.

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      • T
        tocheeba
        last edited by

        Sorry for the delay on this. Here is a print out of the 192.168.2.3 address that connects to the VPN but doesn't work connecting to anything on the network:

        https://imgur.com/a/LgLGRAE

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        • V
          viragomann
          last edited by

          The routes on the client seem to be fine.

          Does each user login with a different user name and also certificate if the server is running in SSL/TLS mode?

          What does the server log show when a second client is connecting?

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          • T
            tocheeba
            last edited by

            Yeah, that's what is weird. Different user names. Client log shows it connects just fine and gets DHCP. I feel like it's a routing issue of some sort, but everything looks setup correctly.

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            • T
              tocheeba
              last edited by

              Sounds stupid, but on my LAN interface, it's setup as 192.168.1.1/24. I'm not limiting myself at all am I ? That's just configuring the IP of the pfSense box, right?

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              • V
                viragomann
                last edited by

                For troubleshooting try to ping the LAN address 192.168.1.1.
                This should work at least if the client routes are set correctly.
                Then try to ping a LAN device.

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                • T
                  tocheeba
                  last edited by

                  Not able to ping either when connected as the 2nd VPN client (1921.68.2.3)

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                  • V
                    viragomann
                    last edited by

                    So please post the clients IPv4 routing table.

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                    • M
                      marvosa
                      last edited by

                      Post your server1.conf (/var/etc/openvpn).

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                      • T
                        tocheeba
                        last edited by

                        I posted the IPv4 routing table above earlier, and you stated that it looked fine?

                        Here is the server1.conf files:

                        dev ovpns1
                        verb 1
                        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 tcp-server
                        cipher AES-128-CBC
                        auth SHA256
                        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
                        multihome
                        tls-server
                        server 192.168.2.0 255.255.255.0
                        client-config-dir /var/etc/openvpn-csc/server1
                        username-as-common-name
                        plugin /usr/local/lib/openvpn/plugins/openvpn-plugin-auth-script.so /usr/local/sbin/ovpn_auth_verify_async user TG9jYWwgRGF0YWJhc2U= false server1 1195
                        tls-verify "/usr/local/sbin/ovpn_auth_verify tls 'OpenVPN+Server+Certificate' 1"
                        lport 1195
                        management /var/etc/openvpn/server1.sock unix
                        push "route 192.168.2.0 255.255.255.0"
                        push "route 192.168.1.0 255.255.255.0"
                        push "dhcp-option DNS 8.8.8.8"
                        push "dhcp-option DNS 4.4.4.4"
                        duplicate-cn
                        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
                        ncp-ciphers AES-128-GCM
                        persist-remote-ip
                        float
                        topology subnet
                        ~
                        ~
                        ~
                        ~
                        ~
                        ~
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                        • M
                          marvosa
                          last edited by marvosa

                          A couple things I see:

                          • The tunnel network is being pushed out to your clients as a route to a remote network, which is incorrect. Remove "192.168.2.0/24" from the IPv4 Local network(s) line.
                          • Considering this is a routed, split-tunnel deployment, why push public DNS servers?

                          Another thing to watch out for is... in a routed solution, the LAN subnets have to be unique across both ends. So, in your situation, any client that's connecting from a LAN subnet of either 192.168.1.0/24 or 192.168.2.0/24 will break the routing to the tunnel.

                          On the server-side, ideally, you will want to move away from popular subnets used by common SOHO routers (192.168.1.0/24, 192.168.2.0/24, etc) on both the LAN and the tunnel network.

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                          • PippinP
                            Pippin
                            last edited by

                            This post is deleted!
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                            • T
                              tocheeba @marvosa
                              last edited by

                              @marvosa Thanks. I removed the DNS and removed the 192.168.2.0/24 from local network line. Connected again just fine on the client, but still can't connect to anything. The network I'm on right now is using a 10.x.x.x scheme. I'm pulling my hair out trying to figure out wtf the problem is.

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                              • M
                                marvosa
                                last edited by

                                Post new screenshots of both the client's routing table when connected and PFsense.

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