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OPNsense 19.1 setup with NordVPN

  1. In order to setup OPNsense with OpenVPN please access your OPNsense via browser.
  2. Navigate to System -> Trust -> Authorities and click on the +Add button.

    You should see this screen:


     
  3. We will configure our OPNsense to connect to US 3113 server but you should connect to a server suggested to you at this page: https://nordvpn.com/servers/tools/ .

     

    You can find the server hostname right under the server title.



    Press on + Add button. Then fill the fields out like this:

    Descriptive Name: NordVPN_US3113_CA
    Method: Import an existing Certificate Authority
    Certificate data: paste the contents below
     

    -----BEGIN CERTIFICATE-----
    MIIFCjCCAvKgAwIBAgIBATANBgkqhkiG9w0BAQ0FADA5MQswCQYDVQQGEwJQQTEQ
    MA4GA1UEChMHTm9yZFZQTjEYMBYGA1UEAxMPTm9yZFZQTiBSb290IENBMB4XDTE2
    MDEwMTAwMDAwMFoXDTM1MTIzMTIzNTk1OVowOTELMAkGA1UEBhMCUEExEDAOBgNV
    BAoTB05vcmRWUE4xGDAWBgNVBAMTD05vcmRWUE4gUm9vdCBDQTCCAiIwDQYJKoZI
    hvcNAQEBBQADggIPADCCAgoCggIBAMkr/BYhyo0F2upsIMXwC6QvkZps3NN2/eQF
    kfQIS1gql0aejsKsEnmY0Kaon8uZCTXPsRH1gQNgg5D2gixdd1mJUvV3dE3y9FJr
    XMoDkXdCGBodvKJyU6lcfEVF6/UxHcbBguZK9UtRHS9eJYm3rpL/5huQMCppX7kU
    eQ8dpCwd3iKITqwd1ZudDqsWaU0vqzC2H55IyaZ/5/TnCk31Q1UP6BksbbuRcwOV
    skEDsm6YoWDnn/IIzGOYnFJRzQH5jTz3j1QBvRIuQuBuvUkfhx1FEwhwZigrcxXu
    MP+QgM54kezgziJUaZcOM2zF3lvrwMvXDMfNeIoJABv9ljw969xQ8czQCU5lMVmA
    37ltv5Ec9U5hZuwk/9QO1Z+d/r6Jx0mlurS8gnCAKJgwa3kyZw6e4FZ8mYL4vpRR
    hPdvRTWCMJkeB4yBHyhxUmTRgJHm6YR3D6hcFAc9cQcTEl/I60tMdz33G6m0O42s
    Qt/+AR3YCY/RusWVBJB/qNS94EtNtj8iaebCQW1jHAhvGmFILVR9lzD0EzWKHkvy
    WEjmUVRgCDd6Ne3eFRNS73gdv/C3l5boYySeu4exkEYVxVRn8DhCxs0MnkMHWFK6
    MyzXCCn+JnWFDYPfDKHvpff/kLDobtPBf+Lbch5wQy9quY27xaj0XwLyjOltpiST
    LWae/Q4vAgMBAAGjHTAbMAwGA1UdEwQFMAMBAf8wCwYDVR0PBAQDAgEGMA0GCSqG
    SIb3DQEBDQUAA4ICAQC9fUL2sZPxIN2mD32VeNySTgZlCEdVmlq471o/bDMP4B8g
    nQesFRtXY2ZCjs50Jm73B2LViL9qlREmI6vE5IC8IsRBJSV4ce1WYxyXro5rmVg/
    k6a10rlsbK/eg//GHoJxDdXDOokLUSnxt7gk3QKpX6eCdh67p0PuWm/7WUJQxH2S
    DxsT9vB/iZriTIEe/ILoOQF0Aqp7AgNCcLcLAmbxXQkXYCCSB35Vp06u+eTWjG0/
    pyS5V14stGtw+fA0DJp5ZJV4eqJ5LqxMlYvEZ/qKTEdoCeaXv2QEmN6dVqjDoTAo
    k0t5u4YRXzEVCfXAC3ocplNdtCA72wjFJcSbfif4BSC8bDACTXtnPC7nD0VndZLp
    +RiNLeiENhk0oTC+UVdSc+n2nJOzkCK0vYu0Ads4JGIB7g8IB3z2t9ICmsWrgnhd
    NdcOe15BincrGA8avQ1cWXsfIKEjbrnEuEk9b5jel6NfHtPKoHc9mDpRdNPISeVa
    wDBM1mJChneHt59Nh8Gah74+TM1jBsw4fhJPvoc7Atcg740JErb904mZfkIEmojC
    VPhBHVQ9LHBAdM8qFI2kRK0IynOmAZhexlP/aT/kpEsEPyaZQlnBn3An1CRz8h0S
    PApL8PytggYKeQmRhl499+6jLxcZ2IegLfqq41dzIjwHwTMplg+1pKIOVojpWA==
    -----END CERTIFICATE-----


    Certificate Private Key: leave blank;
    Serial for next certificate: leave as it is by default;

    Press Save
     

  4. Navigate to VPN -> OpenVPN -> Clients and press + Add button.

  5. Fill in the fields:

    GENERAL INFORMATION

    Disabled: leave unchecked.
    Description: Any name you like. We will use NordVPN_US3113.
    Server mode: Peer to Peer (SSL/TLS);
    Protocol: UDP4 (you can also use TCP4);
    Device mode: tun;
    Interface: any;
    Remote server:

    Host or address: us3113.nordvpn.com (change to the hostname of the server you are going to use);
    Port: 1194 (use 443 if you use TCP);

    Retry DNS resolution: check;
    Proxy host or address: leave blank;
    Proxy port: leave blank;
    Proxy Authentication: None;
    Local port: leave blank;



    USER AUTHENTICATION SETTINGS

    User name/pass: fill in NordVPN username and password;
    Renegotiate time: leave blank;



    CRYPTOGRAPHIC SETTINGS:

    TLS Authentication:

    Enable authentication of TLS packets: Leave Enabled
    Automatically generate a shared TLS authentication key: uncheck and paste the contents below

    -----BEGIN OpenVPN Static key V1-----
    e685bdaf659a25a200e2b9e39e51ff03
    0fc72cf1ce07232bd8b2be5e6c670143
    f51e937e670eee09d4f2ea5a6e4e6996
    5db852c275351b86fc4ca892d78ae002
    d6f70d029bd79c4d1c26cf14e9588033
    cf639f8a74809f29f72b9d58f9b8f5fe
    fc7938eade40e9fed6cb92184abb2cc1
    0eb1a296df243b251df0643d53724cdb
    5a92a1d6cb817804c4a9319b57d53be5
    80815bcfcb2df55018cc83fc43bc7ff8
    2d51f9b88364776ee9d12fc85cc7ea5b
    9741c4f598c485316db066d52db4540e
    212e1518a9bd4828219e24b20d88f598
    a196c9de96012090e333519ae18d3509
    9427e7b372d348d352dc4c85e18cd4b9
    3f8a56ddb2e64eb67adfc9b337157ff4
    -----END OpenVPN Static key V1-----


    Peer Certificate Authority: NordVPN_US3113_CA;
    Client Certificate: None (Username and Password required);
    Encryption Algorithm: AES-256-GCM;
    Auth Digest Algorithm: SHA512;
    Hardware Crypto: No hardware crypto acceleration;



    TUNNEL SETTINGS:

    IPv4 tunnel network: leave blank;
    IPv6 tunnel network: leave blank;
    IPv4 remote network(s): leave blank;
    IPv6 remote network(s): leave blank;
    Limit outgoing bandwidth: leave blank;
    Compression: Disabled - No Compression;
    Type-of-service: leave unchecked;
    Disable IPv6: check;
    Don’t pull routes: leave unchecked;
    Don’t add/remove routes: check.



    ADVANCED CONFIGURATION:

    Advanced: paste the contents below
     

    remote-random;
    tun-mtu 1500;
    tun-mtu-extra 32;
    mssfix 1450;
    persist-key;
    persist-tun;
    reneg-sec 0;
    remote-cert-tls server;


    Verbosity level: 3 (recommended);



    Click Save.
     
  6. Navigate to Interfaces -> Assignments and click on + near New Interface. By default, it is ovpnc1.


     
  7. Click on the OPT1 to edit the interface.

  8. Click on the Enable Interface and do the following changes:

    Description: NordVPN (or anything you want);
    Block private networks: leave unchecked;
    Block bogon networks: leave unchecked;
    IPv4 Configuration Type: None;
    IPv6 Configuration Type: None;
    MAC address: leave blank;
    MTU: leave blank;
    MSS: leave blank;

    No changes required on the DHCP client configuration so just click on Save button.



    Click on the Apply changes button.
     
  9. Navigate to Services -> Unbound DNS -> General.

    Enable: 
    check;
    Listen port: leave blank;
    Network Interfaces: All;
    DNSSEC: uncheck;
    DHCP Registration: check;
    DHCP Domain Override: leave blank;
    DHCP Static Mappings: check;
    IPv6 Link-local: unchecked;
    TXT Comment Support: leave unchecked;
    DNS Query Forwarding: check;
    Local Zone Type: Transparent;
    Custom options: leave blank;
    Outgoing Network Interfaces: NordVPN (or whatever you named your OpenVPN interface);
    WPAD Records: leave unchecked;



    Click Save and Apply changes.
     
  10. Navigate to Services -> Unbound DNS -> Advanced and do the check the following options:

    Hide Identity
    : check
    Hide Version: check
    Prefetch Support: check
    Prefetch DNS Key Support: check

    Leave anything else as it is by default, click Save, and Apply Settings.
     
  11. Navigate to Firewall -> NAT -> Outbound, select Hybrid outbound NAT rule generation (automatically generated rules are applied after manual rules), click Save and Apply Changes.
     
  12. Click on the +Add button on top, on the edit menu, select Interface as NordVPN. Leave anything else by as it is by default, click Save, and Apply Changes.
     
  13. Navigate to Firewall -> Rules -> LAN and delete the IPv6 rule. After that, click on the edit button next to IPv4. Scroll down and under Advanced features, select Gateway as NORDVPN_VPN4. Click Save.

    Next, click +Add, change Source to LAN net and Destination to LAN Address, don't change anything else, Save and Apply Changes.


     
  14. Navigate to System -> Settings -> General and do the following changes:

    Under Networking, check the Prefer IPv4 over IPv6;
    DNS servers:
    103.86.96.100, Use Gateway: none;
    103.86.99.100, Use Gateway: none.

    On DNS server options, uncheck Allow DNS server list to be overridden by DHCP/PPP on WAN

    Click Save and Apply Changes.


     
  15. Navigate to System -> Gateways -> Single and do the following changes:

    Edit NORDVPN_VPN6 -> click Disabled

    Save and Apply Changes.
     
  16. Now you can navigate to VPN -> OpenVPN -> Connection Status and it should state that the service is “up”:



    Restart the connection to assign the OpenVPN Virtual Address to the interfaces.
     
  17. Navigate to Lobby -> Dashboard and confirm the Interface NordVPN Interface has an IP Number


     
  18. You can also check the connection log file under VPN -> OpenVPN -> Log File. If you encounter any connection issues, please send the log file to our customer support for the further support.

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