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    Is there any working site-to-site ipesec config?

    Scheduled Pinned Locked Moved IPsec
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    • DerelictD Offline
      Derelict LAYER 8 Netgate
      last edited by

      Thousands upon thousands of them. Trouble with documentation is they are all different.

      What are you trying to do?

      Chattanooga, Tennessee, USA
      A comprehensive network diagram is worth 10,000 words and 15 conference calls.
      DO NOT set a source address/port in a port forward or firewall rule unless you KNOW you need it!
      Do Not Chat For Help! NO_WAN_EGRESS(TM)

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      • B Offline
        bchristopeit
        last edited by

        I try to connect two sitest with ipsec I am using version 2.3.2

        Key Exchange 1
        Internet Protocol IPv4
        Interface Wan
        Remote Gateway IP from the other site

        P1
        Authentication Method: Mutual PSK
        Negotiation mode: Aggressive
        My identifier: My IP Adress
        Peer identifier: Peer IP Adress
        Presherdkey: …
        Encryption AES
        Hash: SHA1
        DH Group 2
        Lifetime 28800
        Enablde DPD 10/5

        P2
        Mode Tunnel IPv4
        Local Network LAN Subnet
        Remote Network Network 192.168.x.x/24
        Protocoll ESP
        Encryption AES256
        Hash SHA1
        PFS off
        Lifetime 3600

        the same at the other site. Okay with diffrent remote ips. I don`t know my mistake. I changed from monowall to pfsense but it looks like a litte bit more complicated.

        Aug 24 09:12:42 charon 16[ENC] <con1000|9>parsed INFORMATIONAL_V1 request 874233868 [ N(AUTH_FAILED) ]
        Aug 24 09:12:42 charon 16[IKE] <con1000|9>received AUTHENTICATION_FAILED error notify

        This is the last error</con1000|9></con1000|9>

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        • B Offline
          bchristopeit
          last edited by

          If I change

          My identifier: My IP Adress
          Peer identifier: Peer IP Adress

          to

          My identifier: Distinguished name pfsense.localdomain
          Peer identifier: any

          I got:

          Aug 24 09:21:44 charon 15[ENC] <con1000|15>parsed INFORMATIONAL_V1 request 719346522 [ N(INVAL_KE) ]
          Aug 24 09:21:44 charon 15[IKE] <con1000|15>received INVALID_KE_PAYLOAD error notify

          this is from the other site

          Aug 24 09:30:36 charon 11[IKE] <6> no shared key found for 'pfSense.localdomain'[172.31.xxx.xxx] - '213.200.xxx.xxx'[213.200.xxx.xxx]
          Aug 24 09:30:36 charon 11[IKE] <6> no shared key found for 172.31.xxx.xxx - 213.200.xxx.xxx</con1000|15></con1000|15>

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          • DerelictD Offline
            Derelict LAYER 8 Netgate
            last edited by

            Both sides are pfSense 2.3.2?

            Chattanooga, Tennessee, USA
            A comprehensive network diagram is worth 10,000 words and 15 conference calls.
            DO NOT set a source address/port in a port forward or firewall rule unless you KNOW you need it!
            Do Not Chat For Help! NO_WAN_EGRESS(TM)

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            • B Offline
              bchristopeit
              last edited by

              Yes

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              • DerelictD Offline
                Derelict LAYER 8 Netgate
                last edited by

                Then you might as well use IKEv2, AES-GCM, etc.

                Refer to the attached diagram.

                pfSense A

                Phase 1

                Disabled: unchecked
                Key Exchange Version: V2
                Internet Protocol: IPv4
                Interface: WAN
                Remote Gateway: 172.25.228.13
                Authentication Method: Mutual PSK
                My Identifier: My IP address
                Peer Identifier: Peer IP Address
                Pre-Shared Key: presharedkey (pick something random and strong here)
                Encryption Algorithm: AES 256 bits
                Hash Algorithm: SHA256
                DH Group: 14
                Lifetime: 28800
                Disable rekey: unchecked
                Disable Reauth: unchecked
                Responder Only: unchecked
                MOBIKE: Disable
                Split Connections: unchecked
                Dear Peer Detection: checked
                Delay: 10
                Max failures: 5

                Phase 2

                Disabled: unchecked
                Mode: Tunnel IPv4
                Local Network: LAN subnet
                NAT/BINAT translation: None
                Remote Network: Network: 172.25.234.0 /24
                Encryption Algorithms: AES256-GCM: Checked (Auto)
                Hash Algorithms: None checked
                PFS key group: 14
                Lifetime: 3600
                Automatically ping host: 172.25.234.1

                pfSense C

                Phase 1

                Disabled: unchecked
                Key Exchange Version: V2
                Internet Protocol: IPv4
                Interface: WAN
                Remote Gateway: 172.25.228.5
                Authentication Method: Mutual PSK
                My Identifier: My IP address
                Peer Identifier: Peer IP Address
                Pre-Shared Key: presharedkey (pick something random and strong here)
                Encryption Algorithm: AES 256 bits
                Hash Algorithm: SHA256
                DH Group: 14
                Lifetime: 28800
                Disable rekey: unchecked
                Disable Reauth: unchecked
                Responder Only: unchecked
                MOBIKE: Disable
                Split Connections: unchecked
                Dear Peer Detection: checked
                Delay: 10
                Max failures: 5

                Phase 2

                Disabled: unchecked
                Mode: Tunnel IPv4
                Local Network: LAN subnet
                NAT/BINAT translation: None
                Remote Network: Network: 172.25.232.0 /24
                Encryption Algorithms: AES256-GCM: Checked (Auto)
                Hash Algorithms: None checked
                PFS key group: 14
                Lifetime: 3600
                Automatically ping host: 172.25.232.1

                And firewall rules on the IPsec tabs on both sides that pass the traffic you need. An example is included that is wide-open. That might or might not meet your needs/threat model.

                pfSense+VPN.png
                pfSense+VPN.png_thumb
                ![Screen Shot 2016-08-24 at 1.07.08 AM.png_thumb](/public/imported_attachments/1/Screen Shot 2016-08-24 at 1.07.08 AM.png_thumb)
                ![Screen Shot 2016-08-24 at 1.07.08 AM.png](/public/imported_attachments/1/Screen Shot 2016-08-24 at 1.07.08 AM.png)

                Chattanooga, Tennessee, USA
                A comprehensive network diagram is worth 10,000 words and 15 conference calls.
                DO NOT set a source address/port in a port forward or firewall rule unless you KNOW you need it!
                Do Not Chat For Help! NO_WAN_EGRESS(TM)

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                • B Offline
                  bchristopeit
                  last edited by

                  Thanks it looks better but I got:

                  PFSense A
                  Aug 24 10:17:17 charon 10[CFG] received stroke: terminate 'con1'
                  Aug 24 10:17:17 charon 10[CFG] no IKE_SA named 'con1' found
                  Aug 24 10:17:17 charon 10[CFG] received stroke: initiate 'con1'
                  Aug 24 10:17:17 charon 15[IKE] <con1|8>initiating IKE_SA con1[8] to 213.200.xxx.xxx
                  Aug 24 10:17:17 charon 15[ENC] <con1|8>generating IKE_SA_INIT request 0 [ SA KE No N(NATD_S_IP) N(NATD_D_IP) N(FRAG_SUP) N(HASH_ALG) N(REDIR_SUP) ]
                  Aug 24 10:17:17 charon 15[NET] <con1|8>sending packet: from 172.31.xxx.xxx[500] to 213.200.xxx.xxx[500] (464 bytes)
                  Aug 24 10:17:17 charon 15[NET] <con1|8>received packet: from 213.200.xxx.xxx[500] to 172.31.xxx.xxx[500] (464 bytes)
                  Aug 24 10:17:17 charon 15[ENC] <con1|8>parsed IKE_SA_INIT response 0 [ SA KE No N(NATD_S_IP) N(NATD_D_IP) N(FRAG_SUP) N(HASH_ALG) N(MULT_AUTH) ]
                  Aug 24 10:17:17 charon 15[IKE] <con1|8>local host is behind NAT, sending keep alives
                  Aug 24 10:17:17 charon 15[IKE] <con1|8>remote host is behind NAT
                  Aug 24 10:17:17 charon 15[IKE] <con1|8>authentication of '172.31.xxx.xxx' (myself) with pre-shared key
                  Aug 24 10:17:17 charon 15[IKE] <con1|8>establishing CHILD_SA con1
                  Aug 24 10:17:17 charon 15[ENC] <con1|8>generating IKE_AUTH request 1 [ IDi N(INIT_CONTACT) IDr AUTH N(ESP_TFC_PAD_N) SA TSi TSr N(MULT_AUTH) N(EAP_ONLY) ]
                  Aug 24 10:17:17 charon 15[NET] <con1|8>sending packet: from 172.31.xxx.xxx[4500] to 213.200.xxx.xxx[4500] (320 bytes)
                  Aug 24 10:17:17 charon 15[NET] <con1|8>received packet: from 213.200.xxx.xxx[4500] to 172.31.xxx.xxx[4500] (80 bytes)
                  Aug 24 10:17:17 charon 15[ENC] <con1|8>parsed IKE_AUTH response 1 [ N(AUTH_FAILED) ]
                  Aug 24 10:17:17 charon 15[IKE] <con1|8>received AUTHENTICATION_FAILED notify error

                  PFsense B
                  Aug 24 10:17:17 charon 06[NET] <8> received packet: from 213.200.229.167[500] to 172.31.xxx.xxx[500] (464 bytes)
                  Aug 24 10:17:17 charon 06[ENC] <8> parsed IKE_SA_INIT request 0 [ SA KE No N(NATD_S_IP) N(NATD_D_IP) N(FRAG_SUP) N(HASH_ALG) N(REDIR_SUP) ]
                  Aug 24 10:17:17 charon 06[IKE] <8> 213.200.229.167 is initiating an IKE_SA
                  Aug 24 10:17:17 charon 06[IKE] <8> local host is behind NAT, sending keep alives
                  Aug 24 10:17:17 charon 06[IKE] <8> remote host is behind NAT
                  Aug 24 10:17:17 charon 06[ENC] <8> generating IKE_SA_INIT response 0 [ SA KE No N(NATD_S_IP) N(NATD_D_IP) N(FRAG_SUP) N(HASH_ALG) N(MULT_AUTH) ]
                  Aug 24 10:17:17 charon 06[NET] <8> sending packet: from 172.31.xxx.xxx[500] to 213.200.229.167[500] (464 bytes)
                  Aug 24 10:17:17 charon 06[NET] <8> received packet: from 213.200.229.167[4500] to 172.31.xxx.xxx[4500] (320 bytes)
                  Aug 24 10:17:17 charon 06[ENC] <8> parsed IKE_AUTH request 1 [ IDi N(INIT_CONTACT) IDr AUTH N(ESP_TFC_PAD_N) SA TSi TSr N(MULT_AUTH) N(EAP_ONLY) ]
                  Aug 24 10:17:17 charon 06[CFG] <8> looking for peer configs matching 172.31.xxx.xxx[213.200.xxx.xxx]…213.200.229.167[172.31.xxx.xxx]
                  Aug 24 10:17:17 charon 06[CFG] <bypasslan|8>selected peer config 'bypasslan'
                  Aug 24 10:17:17 charon 06[IKE] <bypasslan|8>no shared key found for '213.200.xxx.xxx' - '172.31.xxx.xxx'
                  Aug 24 10:17:17 charon 06[IKE] <bypasslan|8>received ESP_TFC_PADDING_NOT_SUPPORTED, not using ESPv3 TFC padding
                  Aug 24 10:17:17 charon 06[ENC] <bypasslan|8>generating IKE_AUTH response 1 [ N(AUTH_FAILED) ]
                  Aug 24 10:17:17 charon 06[NET] <bypasslan|8>sending packet: from 172.31.xxx.xxx[4500] to 213.200.xxx.xxx[4500] (80 bytes)</bypasslan|8></bypasslan|8></bypasslan|8></bypasslan|8></bypasslan|8></con1|8></con1|8></con1|8></con1|8></con1|8></con1|8></con1|8></con1|8></con1|8></con1|8></con1|8></con1|8></con1|8></con1|8>

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                  • DerelictD Offline
                    Derelict LAYER 8 Netgate
                    last edited by

                    You couldn't have possibly done that that fast. Delete what you have and start over. Carefully. It works. I have it working right here.

                    Chattanooga, Tennessee, USA
                    A comprehensive network diagram is worth 10,000 words and 15 conference calls.
                    DO NOT set a source address/port in a port forward or firewall rule unless you KNOW you need it!
                    Do Not Chat For Help! NO_WAN_EGRESS(TM)

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                    • DerelictD Offline
                      Derelict LAYER 8 Netgate
                      last edited by

                      Aug 24 10:04:49    charon      08[NET] <con1|5>sending packet: from 172.31.xxx.xxx[4500] to 213.200.xxx.xxx[4500] (256 bytes)
                      Aug 24 10:04:49    charon      08[NET] <con1|5>received packet: from 213.200.xxx.xxx[4500] to 172.31.xxx.xxx[4500] (80 bytes)

                      You can't sent packets directly between an RFC1918 address and a public address. Either something else is in the middle you're not telling me about or you have the configuration screwed up. Slow down, be careful, do it right, and it'll work.</con1|5></con1|5>

                      Chattanooga, Tennessee, USA
                      A comprehensive network diagram is worth 10,000 words and 15 conference calls.
                      DO NOT set a source address/port in a port forward or firewall rule unless you KNOW you need it!
                      Do Not Chat For Help! NO_WAN_EGRESS(TM)

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                      • B Offline
                        bchristopeit
                        last edited by

                        Okay I will delete it and start again.

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                        • DerelictD Offline
                          Derelict LAYER 8 Netgate
                          last edited by

                          If one side is behind another NAT device, you probably need to set "My identifier" on that side to be the actual public IP address - the one you see from there when you go to http://ifconfig.io/ for example.

                          My identifier: IP address: Actual public IP address

                          Like I said, every situation is different. There is no "universal walk through" to setting up a VPN.

                          Chattanooga, Tennessee, USA
                          A comprehensive network diagram is worth 10,000 words and 15 conference calls.
                          DO NOT set a source address/port in a port forward or firewall rule unless you KNOW you need it!
                          Do Not Chat For Help! NO_WAN_EGRESS(TM)

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                          • B Offline
                            bchristopeit
                            last edited by

                            WOHOOOOOO YOU ARE MY HERO !!!!! after I changed my Identifier to the public IP VPN is working. Now I have to setup mobile devices with greenbow. Could I use the same?

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                            • DerelictD Offline
                              Derelict LAYER 8 Netgate
                              last edited by

                              I hope you take my advice and use IKEv2, AES-GCM, etc.

                              No idea about the remote access. Completely different thread required.

                              Chattanooga, Tennessee, USA
                              A comprehensive network diagram is worth 10,000 words and 15 conference calls.
                              DO NOT set a source address/port in a port forward or firewall rule unless you KNOW you need it!
                              Do Not Chat For Help! NO_WAN_EGRESS(TM)

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                              • B Offline
                                bchristopeit
                                last edited by

                                Thank you so much. I did it like your example :). Will create a new thread vor IPSec mobile.

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                                • T Offline
                                  timboau
                                  last edited by

                                  THANKS!
                                  I was about to post this question (i might add it here for some additional key words relating to this)
                                  –----------------
                                  I've been reading about the 'issues' that might present in swanstrong for the authentication of identifiers that could be causing me problems. (possibly adding pre-shared keys?) I've been trying all sorts but just cant seem to hit a working configuration.
                                  I have approx 25 remote PPPoE sites connecting to each other and to a static IP address great. I recently added a new site using Australian NBN (the customer IP is assigned via DHCP)
                                  I cant get the new DHCP site to connect to the Static IP server, it connects fine to other PPPoE servers.

                                  I'm running APU box and virtual pfsense routers:

                                  Do you consider this VPN config the best all rounder settings?
                                  What was key to this config allowing the DHCP to Static IP connections to work successfully?

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                                  • DerelictD Offline
                                    Derelict LAYER 8 Netgate
                                    last edited by

                                    Connecting to a static IP address doesn't generally require anything special. Are you connecting from behind another NAT device?

                                    Chattanooga, Tennessee, USA
                                    A comprehensive network diagram is worth 10,000 words and 15 conference calls.
                                    DO NOT set a source address/port in a port forward or firewall rule unless you KNOW you need it!
                                    Do Not Chat For Help! NO_WAN_EGRESS(TM)

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                                    • T Offline
                                      timboau
                                      last edited by

                                      Both IPs are fully Public IPs once being allocated by DHCP rather than PPPoE was the only difference I could discern - the other was always Static.

                                      Anyway - working a treat now :)

                                      Do you consider using those specs as a basic for all tunnels to be the most efficient/CPU wise v's no massive need for crazy security v's stability etc?

                                      I was previously using V2 DH2  P1-AES256 SHA1 / P2 AES128 Hash SHA1

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                                      • DerelictD Offline
                                        Derelict LAYER 8 Netgate
                                        last edited by

                                        AES-GCM in a child SA provides authenticated encryption and therefore does not require a separate authentication/hash step (like SHA1/SHA256) and will therefore perform better especially with AES-NI enabled.

                                        I personally believe that AES-128 is perfectly acceptable in almost all circumstances but you will not likely notice a difference between AES-128 and AES-256 so why not…

                                        So, yes, I like the settings I used in this example. That's why I used them. :)

                                        Chattanooga, Tennessee, USA
                                        A comprehensive network diagram is worth 10,000 words and 15 conference calls.
                                        DO NOT set a source address/port in a port forward or firewall rule unless you KNOW you need it!
                                        Do Not Chat For Help! NO_WAN_EGRESS(TM)

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