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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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    • T
      tocheeba @kiokoman
      last edited by

      @kiokoman I enable the remote network as 192.168.2.0/24 right? Did that, re-downloaded client config, and still the same thing.

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      • kiokomanK
        kiokoman LAYER 8
        last edited by

        no,
        "ipv4 tunnel client" is 192.168.2.0/24
        "ipv4 remote network" for the client would be 192.168.1.0/24

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        • T
          tocheeba
          last edited by

          Gotcha. Just did that, and no luck still. I was assigned 192.168.2.3. I can ping myself, but not 192.168.2.1 or anything on 192.168.1.x network.

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          • V
            viragomann
            last edited by

            Please post the clients routing table.

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            • T
              tocheeba
              last edited by tocheeba

              Sorry for the delay on this -

              https://imgur.com/a/8kJZjFW

              I'm connected now via my phone with a 192.168.2.3 address but can't connect to anything. I have a desktop connected via 192.168.2.2 address which works fine.

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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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