Netgate Discussion Forum
    • Categories
    • Recent
    • Tags
    • Popular
    • Users
    • Search
    • Register
    • Login

    [SOLVED] Site-to-site OpenVPN between pfSense and MikroTik

    Scheduled Pinned Locked Moved OpenVPN
    29 Posts 18 Posters 48.6k Views
    Loading More Posts
    • Oldest to Newest
    • Newest to Oldest
    • Most Votes
    Reply
    • Reply as topic
    Log in to reply
    This topic has been deleted. Only users with topic management privileges can see it.
    • M
      marcelo.comtix @fabianoheringer
      last edited by

      @fabianoheringer , I posted the update of instructions.
      The version of mikrotik firmware is the problem. For the newest version, the update instructions worked fine.

      R 1 Reply Last reply Reply Quote 1
      • R
        Rodrigo Lucio @marcelo.comtix
        last edited by johnpoz

        @marcelo-comtix
        Boa noite marcelo!
        Estou usando dois PfSense ambos com a versão 2.4.4-RELEASE-p3, configurados exatamente iguais (192.168.1.0/24 e 192.168.2.0/24) como OVPN server para um Mikrotik como client de ambos (192.168.0.0/24). A conexão entre o PfSense server (192.168.1.0/24) está perfeita com o MK, fiz conforme o processo mensionado acima. Porém a outra conexão eu consigo "pingar" o tunel nas duas pontas (10.10.10.6 e 10.10.10.5), e do Mikrotik consigo "pingar" o PfSense e as maquinas da rede (192.168.2.0/24), mas ao contrário não funciona e de nenhuma máquina consigo "pingar" de ambos os lados.
        Consegue me ajudar?

        Obrigado!

        Mod Edit: If your going to post in an english section, you need to post in english.. I have done a google translate for you - I have no idea if correct... But please refrain from posting non english in the english boards. Thank you.

        translated:
        Good night Marcelo!
        I am using two PfSense both with version 2.4.4-RELEASE-p3, configured exactly the same (192.168.1.0/24 and 192.168.2.0/24) as OVPN server for a Mikrotik as client of both (192.168.0.0/24). The connection between PfSense server (192.168.1.0/24) is perfect with MK, I made according to the process mentioned above. But the other connection I can "ping" the tunnel at both ends (10.10.10.6 and 10.10.10.5), and from Mikrotik I can "ping" PfSense and network machines (192.168.2.0/24), but on the contrary not works and no machine can "drip" on both sides.
        Can you help me?

        Thank you!

        M 1 Reply Last reply Reply Quote 0
        • D
          DavidBell
          last edited by

          Thanks for the tutorial
          I followed this and the VPN works. On the other hand, the tunnel does not route any traffic between the equipments. if I force a srcnat on an ip it works but temporally and not stable. Does one have a fire rule to add?
          PFSense 2.4.4-RELEASE-p3
          Mikrotik 6.45.6

          Can you help me?

          Thank you!

          M 1 Reply Last reply Reply Quote 0
          • M
            marcelo.comtix @DavidBell
            last edited by

            @DavidBell , I have 2 mikrotik router working with the mentioned setup. It may be that in your case there is some other configuration in pfsense or mikrotik. It would be interesting to better understand its structure.

            On the Mikrotik side it worked even not informing the IPS in openvpn profile.

            I will post again with this setting.

            If you can post how is your configuration, I help you.

            Tks

            1 Reply Last reply Reply Quote 0
            • M
              marcelo.comtix @Rodrigo Lucio
              last edited by

              @Rodrigo-Lucio

              Let me get this straight.
              You have 2 PFSense - OVPN Server.

              PFSense1 - 192.168.1.0/24
              PFSense2 - 192.168.2.0/24

              Mikrotik is a client of PFSense1 and PFSense2.

              That is:
              PFSense1 - 192.168.1.0/24 - OVPN Server
              PFSense2 - 192.168.2.0/24 - OVPN Server
              Mikrotik - 192.168.0.0/24
              OVPN Client1 -> PFSense1
              OVPN Client2 -> PFSense2

              That's right?

              If so, are you using different networks for your Tunnel Network?
              Example:
              PFSense1- 10.10.10.0/24
              PFSense2 -10.20.20.0/24

              In this case, the tunnel network must be different. Understanding is easier.

              tks.

              1 Reply Last reply Reply Quote 0
              • R
                rfmendes
                last edited by

                Hi guys...
                I have the same problem as the @marcelo.comtix
                You resolved this?

                Att;
                Rafael Mendes
                rafael@rmitsolucoes.com.br

                –
                Att;
                Rafael
                rafael.mendes@msn.com

                1 Reply Last reply Reply Quote 0
                • R
                  rubic @marcelo.comtix
                  last edited by

                  @marcelo-comtix said in [SOLVED] Site-to-site OpenVPN between pfSense and MikroTik:

                  Here are my settings that worked:

                  Thank you for some tips! My settings are almost the same. The only difference is that I use topology subnet on pfSense and default PPP profile on Mikrotik. As Mikrotik WIKI states that both 'use-compression' and 'use-encryption' do not work on OVPN tunnels and default PPP profile changes TCP MSS, you do not need separate profile for OVPN.

                  1 Reply Last reply Reply Quote 0
                  • S
                    Sidaum @marcelo.comtix
                    last edited by

                    @marcelo-comtix said in [SOLVED] Site-to-site OpenVPN between pfSense and MikroTik:

                    Here are my settings that worked:
                    PFSense 2.4.4-RELEASE-p3
                    Mikrotik 6.45.3

                    Follow the modifications:

                    PFSENSE:

                    System -> Cert Manager -> CAs
                    Create new CA (vpn-tunnel-ca). Export "CA cert" file (my-ca.crt).

                    System -> Cert Manager -> Certificates
                    Create two certificates (use CA created above) - one for the VPN Server (vpn-tunnel) and one for the MikroTik client (mik-vpn). Export cert and key files for client certificate (mik-vpn.crt and mik-vpn.key).

                    VPN -> OpenVPN -> Server
                    Create new VPN server:
                    Server Mode: Peer to Peer (SSL/TLS)
                    Protocol: TCP
                    Device Mode: tun
                    Interface: WAN
                    Local port: 24100
                    TLS Authentication: (clear checkbox, MikroTik doesn't support shared TLS key)
                    Peer Certificate Authority: vpn-tunnel-ca
                    Server Certificate: vpn-tunnel
                    Encryption algorithm: AES-256-CBC (256 bit key, 128 bit block)
                    Auth Digest Algorithm: SHA1 (160-bit)
                    Hardware Crypto: No Hardware Crypto Aceleration
                    Certificate Depth: One (Client + Server)
                    IPv4 Tunnel Network: 10.200.0.0/29
                    IPv4 Local Network/s: 192.168.1.0/24
                    IPv4 Remote Network/s: 192.168.2.0/24
                    Compression: Omit Preference (Use OpenVPN Default)
                    Topology: net30 - Isolated /30 network per client

                    *Very important, fix the route of the remote network in PFSense
                    Client Specific Overrides:
                    +Add
                    Server List: *select your server
                    Common Name: "common name of certificate client"
                    Advanced: iroute 192.168.2.0 255.255.255.0;

                    MikroTik:
                    Copy two certificate files and the key file to Files. Import all of them from System/Certificates.

                    PPP -> Profiles - create new:
                    Name: ovpn-profile
                    Local address: 10.200.0.6
                    Remote address: 10.200.0.5
                    Change TCP MSS: yes
                    *Protocols:
                    Use Compression: no
                    Use Encryption: yes

                    PPP -> Interface
                    create new OVPN Client:
                    Name: ovpn-office
                    Connect To: 1.1.1.1 (Your IP PFSense VPN Server)
                    Port: 24100
                    Mode: ip
                    User: any
                    Profile: ovpn-profile
                    Certificate: mik-vpn.crt_0
                    Auth: sha 1
                    Cipher: aes 256
                    Add Default Route: (do not check this)

                    It is working perfectly with these settings.
                    Remember that in PFSense the rules for the OpenVPN interface must be created.
                    In Mikrotik, in firewall, check the lists of interface "LAN".

                    Hy, so many time after this post, I had this porblem on my work, following @marcelo-comtix updated instruction I was able to put the tunnel up, but only on PFsense Open VPN Status and MK Interface Traffic page. I cant ping any side to any side, Can u help me with this old post? R u Brazilian?

                    M 1 Reply Last reply Reply Quote 0
                    • M
                      marcelo.comtix
                      last edited by

                      UPDATE

                      My setup:
                      PFSense 2.4.4-RELEASE-p3
                      Mikrotik 6.44.x, 6.45.x, 6.46.x
                      PFSense LAN (Office): 192.168.1.0/24
                      Mikrotik LAN (Client): 192.168.2.0/24

                      PFSENSE

                      • CERTIFICATES

                        1. System > Cert Manager > CAs
                          Create new CA (OVPN-CA)
                          Export "CA cert" file (OVPN-CA.crt)

                        2. System -> Cert Manager -> Certificates
                          Create two certificates (use CA created above):
                          One for the VPN Server (OVPN-SERVER), set the option "Certificate type: Server Certificate"
                          One for the VPN Client (OVPN-MK), set option "Certificate type: User Certificate"
                          ATENTION! In the VPN Client creation (OVPN-MK), set "Common name: site1.example.com" and save for later use.
                          Export cert and key files for client certificate (OVPN-MK.crt and OVPN-MK.key).

                      • OPENVPN

                        1. VPN -> OpenVPN -> Server
                          +Add
                          Create new VPN server:
                          Server Mode: Peer to Peer (SSL/TLS)
                          Protocol: TCP
                          Device Mode: tun
                          Interface: WAN
                          Local port: 24100
                          Description: OVPN-MK
                          TLS Authentication: (clear checkbox, MikroTik doesn't support shared TLS key)
                          Peer Certificate Authority: OVPN-CA
                          Server Certificate: OVPN-SERVER
                          Encryption algorithm: BF-CBC (128-bit)
                          Auth Digest Algorithm: SHA1 (160-bit)
                          Hardware Crypto: No Hardware Crypto Aceleration
                          Certificate Depth: One (Client + Server)
                          IPv4 Tunnel Network: 10.100.0.0/29
                          IPv4 Local Network/s: 192.168.1.0/24
                          IPv4 Remote Network/s: 192.168.2.0/24
                          Compression: Omit Preference (Use OpenVPN Default)
                          (Mikrotik have limitations, one is about LZO compression, this explaned in Mikrotik Profile section)
                          Topology: net30 and Subnet works

                        2. VPN -> OpenVPN -> Client Specific Overrides
                          ATENTION 1!
                          Fix the route of the remote network in PFSense, this is mandatory to work.
                          +Add
                          Server List: OVPN-MK (select your vpn server configuration)
                          Common Name: site1.example.com
                          Advanced: iroute 192.168.2.0 255.255.255.0;
                          ATENTION 2! After adding or changing the "Client Specific Overrides" restart de OVPN Server to activate the configurations. To do this, Status -> OpenVPN and click "restart icon" in your OPVN server.

                      • FIREWALL
                        Firewall -> Rules -> OpenVPN
                        Create a rule to allow interface OpenVPN traffic. This is a sample rule to allow any traffic in the OpenVPN interface.
                        +Add
                        Action: Pass
                        Interface: OpenVPN
                        Address Family: IPV4
                        Protocol: Any
                        Source: Any
                        Destination: Any
                        Description: OpenVPN interface traffic

                      MIKROTIK

                      • Certificates
                        Copy two certificate files and the key file to Files.
                        Import all of them from System -> Certificates.

                      • PROFILE
                        Mikrotik OpenVPN have limitations, as @rubic commented see below on MK Wiki: (UDP and LZO Compression)
                        https://wiki.mikrotik.com/wiki/OpenVPN#Unsupported
                        For most simplified scenarios, the default profile works without any modifications.
                        I have tested profiles with and without Encryption option set.
                        I recommend creating a separate profile, if you are going to use dual WAN in PFSense and up,down scripts in mikrotik profile.

                      • PPP Interface
                        PPP -> Interface
                        create new OVPN Client:
                        Name: ovpn-office
                        Connect To: 9.9.9.9 (Your IP PFSense VPN Server)
                        Port: 24100
                        Mode: ip
                        User: any
                        Profile: default (or custom ovpn-profile)
                        Certificate: OVPN-MK.crt_0
                        Auth: sha 1
                        Cipher: blowfish 128
                        Add Default Route: (do not check this)

                      R M 2 Replies Last reply Reply Quote 0
                      • R
                        rezance @marcelo.comtix
                        last edited by rezance

                        @marcelo-comtix
                        I follow your steps precisely, but i still having problem. It looks that connections is established, but mikrotik and pfsense can not ping each other, connections is reset every 60 seconds.

                        In pfsense dashboard I see that connection is up, but after 60 seconds it is reseted due in activity.
                        In mikrotik I see only rx packets. I see that routes are in place.

                        Also I was not able to made connection until I did not create own openvpn profile in mikrotik, where I assigned ip to local interface, otherwise connection was mikrotik with error "no ip address provided"
                        Any idea?

                        M 1 Reply Last reply Reply Quote 0
                        • A
                          andersonkiyoshi
                          last edited by andersonkiyoshi

                          @rezance
                          A solução para o Mikrotik se comunicar ao Pfsense é fazer um masquerade. É a única coisa que falta da última configuração acima do @marcelo-comtix
                          Chain: src-nat
                          Out-Interface: ovpn-office
                          Action: masquerade

                          The solution for Mikrotik to communicate with Pfsense is to make a masquerade. It's the only thing missing from the last configuration above @ marcelo-comtix
                          Chain: src-nat
                          Out-Interface: ovpn-office
                          Action: masquerade

                          H 1 Reply Last reply Reply Quote 0
                          • H
                            huutai1996 @andersonkiyoshi
                            last edited by huutai1996

                            @andersonkiyoshi i followed the your solution. i ping from mikrotik to pfsense ok but ping from pfsense to mik not ok

                            A 1 Reply Last reply Reply Quote 0
                            • M
                              marcelo.comtix @rezance
                              last edited by

                              @rezance what's your mikrotik version ?

                              Please, send your networks the both sides of tunnel.

                              1 Reply Last reply Reply Quote 0
                              • A
                                andersonkiyoshi @huutai1996
                                last edited by

                                @huutai1996

                                VPN -> OpenVPN -> Client Specific Overrides
                                ATENTION 1!
                                Fix the route of the remote network in PFSense, this is mandatory to work.
                                +Add
                                Server List: OVPN-MK (select your vpn server configuration)
                                Common Name: site1.example.com
                                Advanced: iroute 192.168.2.0 255.255.255.0;
                                ATENTION 2! After adding or changing the "Client Specific Overrides" restart de OVPN Server to activate the configurations. To do this, Status -> OpenVPN and click "restart icon" in your OPVN server.

                                This route has to be done correctly, you need to take the path to reach the destination.

                                1 Reply Last reply Reply Quote 0
                                • M
                                  mike8888 @marcelo.comtix
                                  last edited by

                                  @marcelo-comtix thanks bro, your configuration (march 7th) works for me

                                  i use pfsense 2.4.4 p3 as server
                                  and mikrotik RB750G3 (6.46.7) as client

                                  cheers

                                  mike

                                  1 Reply Last reply Reply Quote 1
                                  • N noschvie referenced this topic on
                                  • First post
                                    Last post
                                  Copyright 2025 Rubicon Communications LLC (Netgate). All rights reserved.