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    IPSec/L2TP with pfSense 2.2

    IPsec
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    • A
      AndrewZ
      last edited by

      I don't think the client is guilty… I will try to find another client to test. This error - [l2tp0] no interface to proxy arp on for 192.168.32.128' - make me suspicious regarding the L2TP server config or behavior.

      Daemon is started as follows:
      /usr/local/sbin/mpd4 -b -d /var/etc/l2tp-vpn -p /var/run/l2tp-vpn.pid -s l2tps l2tps

      Configuration file /var/etc/l2tp-vpn/mpd.conf

      
l2tps:
	load l2tp0
	load l2tp1
	load l2tp2
	load l2tp3
	load l2tp4
	load l2tp5
	load l2tp6
	load l2tp7

l2tp0:
	new -i l2tp0 l2tp0 l2tp0
	set ipcp ranges 192.168.32.1/32 192.168.32.128/32
	load l2tp_standard

l2tp1:
	new -i l2tp1 l2tp1 l2tp1
	set ipcp ranges 192.168.32.1/32 192.168.32.129/32
	load l2tp_standard

l2tp2:
	new -i l2tp2 l2tp2 l2tp2
	set ipcp ranges 192.168.32.1/32 192.168.32.130/32
	load l2tp_standard

l2tp3:
	new -i l2tp3 l2tp3 l2tp3
	set ipcp ranges 192.168.32.1/32 192.168.32.131/32
	load l2tp_standard

l2tp4:
	new -i l2tp4 l2tp4 l2tp4
	set ipcp ranges 192.168.32.1/32 192.168.32.132/32
	load l2tp_standard

l2tp5:
	new -i l2tp5 l2tp5 l2tp5
	set ipcp ranges 192.168.32.1/32 192.168.32.133/32
	load l2tp_standard

l2tp6:
	new -i l2tp6 l2tp6 l2tp6
	set ipcp ranges 192.168.32.1/32 192.168.32.134/32
	load l2tp_standard

l2tp7:
	new -i l2tp7 l2tp7 l2tp7
	set ipcp ranges 192.168.32.1/32 192.168.32.135/32
	load l2tp_standard

l2tp_standard:
	set bundle disable multilink
	set bundle enable compression
	set bundle yes crypt-reqd
	set ipcp yes vjcomp
	# set ipcp ranges 131.188.69.161/32 131.188.69.170/28
	set ccp yes mppc
	set iface disable on-demand
	set iface enable proxy-arp
	set iface up-script /usr/local/sbin/vpn-linkup
	set iface down-script /usr/local/sbin/vpn-linkdown
	set link yes acfcomp protocomp
	set link no pap chap
	set link enable chap
	set link keep-alive 10 180
	set ipcp dns 192.168.5.1
      1 Reply Last reply Reply Quote 0
      • jimpJ
        jimp Rebel Alliance Developer Netgate
        last edited by

        @AndrewZ:

        I don't think the client is guilty… I will try to find another client to test. This error - [l2tp0] no interface to proxy arp on for 192.168.32.128' - make me suspicious regarding the L2TP server config or behavior.

        That is normal. It only comes into play if you make the client subnet overlap another interface such as LAN, the firewall will proxy arp for the overlapping addresses so the clients can function. It's not related to any problem.

        Remember: Upvote with the 👍 button for any user/post you find to be helpful, informative, or deserving of recognition!

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

          Guys,
                I have been playing with the lastest build and trying to get the this to work.

          This is the logs i get when trying to connect using windows 7.
          According to the Ipsec logs I get this far and it just fails to connect
          Jan 22 03:50:05 charon: 09[IKE] <con1|24>CHILD_SA con1{24} established with SPIs c5c7bc2a_i 1c3b1126_o and TS 162.217.144.166/32|/0[udp/l2f] === 68.196.152.146/32|/0[udp/l2f]
          Jan 22 03:50:05 charon: 09[IKE] CHILD_SA con1{24} established with SPIs c5c7bc2a_i 1c3b1126_o and TS 162.217.144.166/32|/0[udp/l2f] === 68.196.152.146/32|/0[udp/l2f]

          If i connect using my iphone 6
          it connects and gets a proper ip address.
          I can ping the phone from my network but cannot connect anywhere from the phone (dns names or ip addresses)

          I found an articale why windows may not be connecting but haven't had any luck getting it to work.

          AssumeUDPEncapsulationContextOnSendRule

          http://support2.microsoft.com/?kbid=947234

          It appears to be valid for windows Vista - 8</con1|24>

          1 Reply Last reply Reply Quote 0
          • jimpJ
            jimp Rebel Alliance Developer Netgate
            last edited by

            @robertwh:

            Jan 22 03:50:05 charon: 09[IKE] <con1|24>CHILD_SA con1{24} established with SPIs c5c7bc2a_i 1c3b1126_o and TS 162.217.144.166/32|/0[udp/l2f] === 68.196.152.146/32|/0[udp/l2f]
            Jan 22 03:50:05 charon: 09[IKE] CHILD_SA con1{24} established with SPIs c5c7bc2a_i 1c3b1126_o and TS 162.217.144.166/32|/0[udp/l2f] === 68.196.152.146/32|/0[udp/l2f]</con1|24>

            That means the IPsec portion connected. From there, look in the L2TP settings/logs.

            Remember: Upvote with the 👍 button for any user/post you find to be helpful, informative, or deserving of recognition!

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            Do not Chat/PM for help!

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

              I don't think the IPSEC tunnel is completly working though.
              I suspect it may be NAT-T related

              On the windows client it connects but never gets to the L2TP connection. It generates these logs and then drops with a 809 error.

              
Jan 22 09:13:19	charon: 09[IKE] <con1|27>closing CHILD_SA con1{27} with SPIs cb8d4f49_i (774 bytes) c223e6e8_o (0 bytes) and TS 162.217.144.166/32|/0[udp/l2f] === 68.196.152.146/32|/0[udp/l2f]
Jan 22 09:13:19	charon: 09[IKE] closing CHILD_SA con1{27} with SPIs cb8d4f49_i (774 bytes) c223e6e8_o (0 bytes) and TS 162.217.144.166/32|/0[udp/l2f] === 68.196.152.146/32|/0[udp/l2f]
Jan 22 09:13:19	charon: 15[IKE] <con1|27>Hash => 20 bytes @ 0x80d545540
Jan 22 09:13:19	charon: 15[IKE] <con1|27>0: 00 F2 7E 7F 5D 3A C0 86 3F D1 78 60 08 82 8B 6C ..~.]:..?.x`...l
Jan 22 09:13:19	charon: 15[IKE] <con1|27>16: C8 DD FE 22 ..."
Jan 22 09:13:19	charon: 15[IKE] Hash => 20 bytes @ 0x80d545540
Jan 22 09:13:19	charon: 15[IKE] 0: 00 F2 7E 7F 5D 3A C0 86 3F D1 78 60 08 82 8B 6C ..~.]:..?.x`...l
Jan 22 09:13:19	charon: 15[IKE] 16: C8 DD FE 22 ..."
Jan 22 09:13:19	charon: 15[IKE] <con1|27>received DELETE for IKE_SA con1[27]
Jan 22 09:13:19	charon: 15[IKE] received DELETE for IKE_SA con1[27]
Jan 22 09:13:19	charon: 15[IKE] <con1|27>deleting IKE_SA con1[27] between 162.217.144.166[162.217.144.166]...68.196.152.146[192.168.1.9]
Jan 22 09:13:19	charon: 15[IKE] deleting IKE_SA con1[27] between 162.217.144.166[162.217.144.166]...68.196.152.146[192.168.1.9]
Jan 22 09:13:19	charon: 15[IKE] <con1|27>IKE_SA con1[27] state change: ESTABLISHED => DELETING
Jan 22 09:13:19	charon: 15[IKE] IKE_SA con1[27] state change: ESTABLISHED => DELETING
Jan 22 09:13:19	charon: 15[IKE] <con1|27>IKE_SA con1[27] state change: DELETING => DELETING
Jan 22 09:13:19	charon: 15[IKE] IKE_SA con1[27] state change: DELETING => DELETING
Jan 22 09:13:19	charon: 15[IKE] <con1|27>IKE_SA con1[27] state change: DELETING => DESTROYING
Jan 22 09:13:19	charon: 15[IKE] IKE_SA con1[27] state change: DELETING => DESTROYING</con1|27></con1|27></con1|27></con1|27></con1|27></con1|27></con1|27></con1|27></con1|27>
              1 Reply Last reply Reply Quote 0
              • R
                robertwh
                last edited by

                Here is the complete log when the ipsec established but i see nothing on the l2tp side.

                I have tried setting the NAT-T to force and auto.

                
Last 500 IPsec log entries
Jan 22 10:21:32	charon: 16[IKE] received MS NT5 ISAKMPOAKLEY vendor ID
Jan 22 10:21:32	charon: 16[IKE] <40> received NAT-T (RFC 3947) vendor ID
Jan 22 10:21:32	charon: 16[IKE] received NAT-T (RFC 3947) vendor ID
Jan 22 10:21:32	charon: 16[IKE] <40> received draft-ietf-ipsec-nat-t-ike-02\n vendor ID
Jan 22 10:21:32	charon: 16[IKE] received draft-ietf-ipsec-nat-t-ike-02\n vendor ID
Jan 22 10:21:32	charon: 16[IKE] <40> received FRAGMENTATION vendor ID
Jan 22 10:21:32	charon: 16[IKE] received FRAGMENTATION vendor ID
Jan 22 10:21:32	charon: 16[IKE] <40> 68.196.152.146 is initiating a Main Mode IKE_SA
Jan 22 10:21:32	charon: 16[IKE] 68.196.152.146 is initiating a Main Mode IKE_SA
Jan 22 10:21:32	charon: 16[IKE] <40> remote host is behind NAT
Jan 22 10:21:32	charon: 16[IKE] remote host is behind NAT
Jan 22 10:21:32	charon: 16[IKE] <con1|40>IKE_SA con1[40] established between 162.217.144.166[162.217.144.166]...68.196.152.146[192.168.1.9]
Jan 22 10:21:32	charon: 16[IKE] IKE_SA con1[40] established between 162.217.144.166[162.217.144.166]...68.196.152.146[192.168.1.9]
Jan 22 10:21:32	charon: 16[IKE] <con1|40>DPD not supported by peer, disabled
Jan 22 10:21:32	charon: 16[IKE] DPD not supported by peer, disabled
Jan 22 10:21:32	charon: 07[IKE] <con1|40>received 3600s lifetime, configured 0s
Jan 22 10:21:32	charon: 07[IKE] received 3600s lifetime, configured 0s
Jan 22 10:21:32	charon: 07[IKE] <con1|40>received 250000000 lifebytes, configured 0
Jan 22 10:21:32	charon: 07[IKE] received 250000000 lifebytes, configured 0
Jan 22 10:21:32	charon: 07[IKE] <con1|40>CHILD_SA con1{40} established with SPIs c2ac3083_i 791710e4_o and TS 162.217.144.166/32|/0[udp/l2f] === 68.196.152.146/32|/0[udp/l2f]
Jan 22 10:21:32	charon: 07[IKE] CHILD_SA con1{40} established with SPIs c2ac3083_i 791710e4_o and TS 162.217.144.166/32|/0[udp/l2f] === 68.196.152.146/32|/0[udp/l2f]
Jan 22 10:21:32	charon: 09[IKE] <con1|40>received 3600s lifetime, configured 0s
Jan 22 10:21:32	charon: 09[IKE] received 3600s lifetime, configured 0s
Jan 22 10:21:32	charon: 09[IKE] <con1|40>received 250000000 lifebytes, configured 0
Jan 22 10:21:32	charon: 09[IKE] received 250000000 lifebytes, configured 0
Jan 22 10:21:32	charon: 09[IKE] <con1|40>detected rekeying of CHILD_SA con1{40}
Jan 22 10:21:32	charon: 09[IKE] detected rekeying of CHILD_SA con1{40}
Jan 22 10:21:32	charon: 07[IKE] <con1|40>CHILD_SA con1{40} established with SPIs ce98b678_i f53a2b36_o and TS 162.217.144.166/32|/0[udp/l2f] === 68.196.152.146/32|/0[udp/l2f]
Jan 22 10:21:32	charon: 07[IKE] CHILD_SA con1{40} established with SPIs ce98b678_i f53a2b36_o and TS 162.217.144.166/32|/0[udp/l2f] === 68.196.152.146/32|/0[udp/l2f]
Jan 22 10:21:32	charon: 14[IKE] <con1|40>received DELETE for ESP CHILD_SA with SPI 791710e4
Jan 22 10:21:32	charon: 14[IKE] received DELETE for ESP CHILD_SA with SPI 791710e4
Jan 22 10:21:32	charon: 14[IKE] <con1|40>closing CHILD_SA con1{40} with SPIs c2ac3083_i (0 bytes) 791710e4_o (0 bytes) and TS 162.217.144.166/32|/0[udp/l2f] === 68.196.152.146/32|/0[udp/l2f]
Jan 22 10:21:32	charon: 14[IKE] closing CHILD_SA con1{40} with SPIs c2ac3083_i (0 bytes) 791710e4_o (0 bytes) and TS 162.217.144.166/32|/0[udp/l2f] === 68.196.152.146/32|/0[udp/l2f]
Jan 22 10:21:35	charon: 14[IKE] <con1|40>received 3600s lifetime, configured 0s
Jan 22 10:21:35	charon: 14[IKE] received 3600s lifetime, configured 0s
Jan 22 10:21:35	charon: 14[IKE] <con1|40>received 250000000 lifebytes, configured 0
Jan 22 10:21:35	charon: 14[IKE] received 250000000 lifebytes, configured 0
Jan 22 10:21:35	charon: 14[IKE] <con1|40>detected rekeying of CHILD_SA con1{40}
Jan 22 10:21:35	charon: 14[IKE] detected rekeying of CHILD_SA con1{40}
Jan 22 10:21:35	charon: 14[IKE] <con1|40>CHILD_SA con1{40} established with SPIs c51633fb_i ca4d941f_o and TS 162.217.144.166/32|/0[udp/l2f] === 68.196.152.146/32|/0[udp/l2f]
Jan 22 10:21:35	charon: 14[IKE] CHILD_SA con1{40} established with SPIs c51633fb_i ca4d941f_o and TS 162.217.144.166/32|/0[udp/l2f] === 68.196.152.146/32|/0[udp/l2f]
Jan 22 10:21:35	charon: 16[IKE] <con1|40>received DELETE for ESP CHILD_SA with SPI f53a2b36
Jan 22 10:21:35	charon: 16[IKE] received DELETE for ESP CHILD_SA with SPI f53a2b36
Jan 22 10:21:35	charon: 16[IKE] <con1|40>closing CHILD_SA con1{40} with SPIs ce98b678_i (0 bytes) f53a2b36_o (0 bytes) and TS 162.217.144.166/32|/0[udp/l2f] === 68.196.152.146/32|/0[udp/l2f]
Jan 22 10:21:35	charon: 16[IKE] closing CHILD_SA con1{40} with SPIs ce98b678_i (0 bytes) f53a2b36_o (0 bytes) and TS 162.217.144.166/32|/0[udp/l2f] === 68.196.152.146/32|/0[udp/l2f]
Jan 22 10:21:39	charon: 16[IKE] <con1|40>received 3600s lifetime, configured 0s
Jan 22 10:21:39	charon: 16[IKE] received 3600s lifetime, configured 0s
Jan 22 10:21:39	charon: 16[IKE] <con1|40>received 250000000 lifebytes, configured 0
Jan 22 10:21:39	charon: 16[IKE] received 250000000 lifebytes, configured 0
Jan 22 10:21:39	charon: 16[IKE] <con1|40>detected rekeying of CHILD_SA con1{40}
Jan 22 10:21:39	charon: 16[IKE] detected rekeying of CHILD_SA con1{40}
Jan 22 10:21:39	charon: 16[IKE] <con1|40>CHILD_SA con1{40} established with SPIs c0f69931_i fff6c3f5_o and TS 162.217.144.166/32|/0[udp/l2f] === 68.196.152.146/32|/0[udp/l2f]
Jan 22 10:21:39	charon: 16[IKE] CHILD_SA con1{40} established with SPIs c0f69931_i fff6c3f5_o and TS 162.217.144.166/32|/0[udp/l2f] === 68.196.152.146/32|/0[udp/l2f]
Jan 22 10:21:39	charon: 10[IKE] <con1|40>received DELETE for ESP CHILD_SA with SPI ca4d941f
Jan 22 10:21:39	charon: 10[IKE] received DELETE for ESP CHILD_SA with SPI ca4d941f
Jan 22 10:21:39	charon: 10[IKE] <con1|40>closing CHILD_SA con1{40} with SPIs c51633fb_i (0 bytes) ca4d941f_o (0 bytes) and TS 162.217.144.166/32|/0[udp/l2f] === 68.196.152.146/32|/0[udp/l2f]
Jan 22 10:21:39	charon: 10[IKE] closing CHILD_SA con1{40} with SPIs c51633fb_i (0 bytes) ca4d941f_o (0 bytes) and TS 162.217.144.166/32|/0[udp/l2f] === 68.196.152.146/32|/0[udp/l2f]
Jan 22 10:21:47	charon: 10[IKE] <con1|40>received 3600s lifetime, configured 0s
Jan 22 10:21:47	charon: 10[IKE] received 3600s lifetime, configured 0s
Jan 22 10:21:47	charon: 10[IKE] <con1|40>received 250000000 lifebytes, configured 0
Jan 22 10:21:47	charon: 10[IKE] received 250000000 lifebytes, configured 0
Jan 22 10:21:47	charon: 10[IKE] <con1|40>detected rekeying of CHILD_SA con1{40}
Jan 22 10:21:47	charon: 10[IKE] detected rekeying of CHILD_SA con1{40}
Jan 22 10:21:47	charon: 10[IKE] <con1|40>CHILD_SA con1{40} established with SPIs c9cfefb5_i 4d93f9c0_o and TS 162.217.144.166/32|/0[udp/l2f] === 68.196.152.146/32|/0[udp/l2f]
Jan 22 10:21:47	charon: 10[IKE] CHILD_SA con1{40} established with SPIs c9cfefb5_i 4d93f9c0_o and TS 162.217.144.166/32|/0[udp/l2f] === 68.196.152.146/32|/0[udp/l2f]
Jan 22 10:21:47	charon: 07[IKE] <con1|40>received DELETE for ESP CHILD_SA with SPI fff6c3f5
Jan 22 10:21:47	charon: 07[IKE] received DELETE for ESP CHILD_SA with SPI fff6c3f5
Jan 22 10:21:47	charon: 07[IKE] <con1|40>closing CHILD_SA con1{40} with SPIs c0f69931_i (0 bytes) fff6c3f5_o (0 bytes) and TS 162.217.144.166/32|/0[udp/l2f] === 68.196.152.146/32|/0[udp/l2f]
Jan 22 10:21:47	charon: 07[IKE] closing CHILD_SA con1{40} with SPIs c0f69931_i (0 bytes) fff6c3f5_o (0 bytes) and TS 162.217.144.166/32|/0[udp/l2f] === 68.196.152.146/32|/0[udp/l2f]
Jan 22 10:21:57	charon: 07[IKE] <con1|40>received 3600s lifetime, configured 0s
Jan 22 10:21:57	charon: 07[IKE] received 3600s lifetime, configured 0s
Jan 22 10:21:57	charon: 07[IKE] <con1|40>received 250000000 lifebytes, configured 0
Jan 22 10:21:57	charon: 07[IKE] received 250000000 lifebytes, configured 0
Jan 22 10:21:57	charon: 07[IKE] <con1|40>detected rekeying of CHILD_SA con1{40}
Jan 22 10:21:57	charon: 07[IKE] detected rekeying of CHILD_SA con1{40}
Jan 22 10:21:57	charon: 07[IKE] <con1|40>CHILD_SA con1{40} established with SPIs c13e2917_i d30e718f_o and TS 162.217.144.166/32|/0[udp/l2f] === 68.196.152.146/32|/0[udp/l2f]
Jan 22 10:21:57	charon: 07[IKE] CHILD_SA con1{40} established with SPIs c13e2917_i d30e718f_o and TS 162.217.144.166/32|/0[udp/l2f] === 68.196.152.146/32|/0[udp/l2f]
Jan 22 10:21:57	charon: 10[IKE] <con1|40>received DELETE for ESP CHILD_SA with SPI 4d93f9c0
Jan 22 10:21:57	charon: 10[IKE] received DELETE for ESP CHILD_SA with SPI 4d93f9c0
Jan 22 10:21:57	charon: 10[IKE] <con1|40>closing CHILD_SA con1{40} with SPIs c9cfefb5_i (0 bytes) 4d93f9c0_o (0 bytes) and TS 162.217.144.166/32|/0[udp/l2f] === 68.196.152.146/32|/0[udp/l2f]
Jan 22 10:21:57	charon: 10[IKE] closing CHILD_SA con1{40} with SPIs c9cfefb5_i (0 bytes) 4d93f9c0_o (0 bytes) and TS 162.217.144.166/32|/0[udp/l2f] === 68.196.152.146/32|/0[udp/l2f]</con1|40></con1|40></con1|40></con1|40></con1|40></con1|40></con1|40></con1|40></con1|40></con1|40></con1|40></con1|40></con1|40></con1|40></con1|40></con1|40></con1|40></con1|40></con1|40></con1|40></con1|40></con1|40></con1|40></con1|40></con1|40></con1|40></con1|40></con1|40></con1|40></con1|40></con1|40></con1|40></con1|40></con1|40></con1|40>
                1 Reply Last reply Reply Quote 0
                • E
                  eri--
                  last edited by

                  Probably you have to disable rekey on this tunnel.

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

                    Here are my settings below, and it doesn't work.

                    PHASE 1 SETTINGS

                    Phase 1 proposal (Authentication):
                    Authentication method: Mutual PSK
                    Negotiation mode: Main
                    My Identifier: My IP address

                    Phase 1 proposal (Algorithms):
                    Encryption algorithm: 3DES
                    Hash algroithm: SHA1
                    Dh key group: 2 (1024 bit)
                    Lifetime: 28800 seconds

                    Advanced options:
                    Disable rekey is off
                    Disable reauth is off
                    NAT Traversal is Auto
                    Dead Peer Detection is enabled

                    PHASE 2 SETTINGS

                    Phase 2 settings are all the defaults except MODE which should be transport so:

                    MODE: Transport (this one f'd me up for a while, I kept setting it to tunnel)
                    Protocol: ESP
                    Encryption algrithms: AES (128 bits), 3DES, CAST128, DES
                    Hash algorithems: MD5, SHA1, SHA256, SHA384, SHA512, AES-XCBC
                    PFS key group: off
                    Lifetime: 3600 seconds

                    On the mobile clients tab:

                    Enable IPsec mobile client support is checked
                    Everything else on this tab is unchecked
                    User Authentication is set to "Local Database" (which isn't actually used because Xauth isn't on in P1)
                    Group Authentication is set to none

                    On the Pre-Shared Keys tabs:
                    Add a single PSK with the identifier "allusers", set this to something strong

                    Firewall NAT:

                    • No special NAT rules added, outbound NAT is automatic

                    Firewall rules:

                    • No special WAN rules added
                    • No IPSec rules added
                    • L2TP VPN, add a rule for the VPN traffic you want to allow.  I have a "pass-everything" rule here.  Note that if you add a rule, by default you get a pass all TCP rule, not a pass everything rule.

                    L2TP VPN setup:
                    L2TP server is Enabled
                    Interface: LAN
                    Remote address range: a range that is a subset of the LAN subnet, that starts on a /29 boundary.  I picked 192.168.x.208
                    Subnet mask: /29
                    Number of l2tp users: 8
                    Secret: (blank)
                    Authentication type: CHAP
                    Server address: is the next ip outside the remote address range, 192.168.x.216 in my case.

                    1 Reply Last reply Reply Quote 0
                    • jimpJ
                      jimp Rebel Alliance Developer Netgate
                      last edited by

                      @robertwh:

                      Interface: LAN

                      Should be WAN, not LAN (See https://doc.pfsense.org/index.php/L2TP/IPsec )

                      Remember: Upvote with the 👍 button for any user/post you find to be helpful, informative, or deserving of recognition!

                      Need help fast? Netgate Global Support!

                      Do not Chat/PM for help!

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

                        I have tried both it doesn't seem to matter for L2TP.

                        I can still establish a  connection from the phone but not from windows client.

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                        • jimpJ
                          jimp Rebel Alliance Developer Netgate
                          last edited by

                          @robertwh:

                          I have tried both it doesn't seem to matter for L2TP.

                          I can still establish a  connection from the phone but not from windows client.

                          The interface matters for L2TP. The transport mode IPsec tunnel is built between the client's IP address and the WAN IP address of the firewall. The L2TP client will send the L2TP request to the WAN IP of the firewall.

                          Using the exact settings on the guide, a Windows 8.1 client will connect and route. I haven't tried other versions of Windows though.

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                          • R
                            robertwh
                            last edited by

                            Jimp what version of the snapshot are you using?

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                            • jimpJ
                              jimp Rebel Alliance Developer Netgate
                              last edited by

                              I've tried it with the most recent public build and with some of the newer builds we have been testing internally in preparation for release.

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                              • R
                                robertwh
                                last edited by

                                I have matched the configuration letter for letter and now matter what i do i cannot connect from windows 8.1 / 7

                                the one confusing part in L2TP

                                Current LAN: 192.168.1.1/24

                                Server Address 192.168.1.2
                                first starting 192.168.1.128 /25

                                Is this correct?

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                                • jimpJ
                                  jimp Rebel Alliance Developer Netgate
                                  last edited by

                                  @robertwh:

                                  I have matched the configuration letter for letter and now matter what i do i cannot connect from windows 8.1 / 7

                                  the one confusing part in L2TP

                                  Current LAN: 192.168.1.1/24

                                  Server Address 192.168.1.2
                                  first starting 192.168.1.128 /25

                                  Is this correct?

                                  While that technically should work, I have not tested overlapping the LAN. It's best to use a different subnet.

                                  Remember: Upvote with the 👍 button for any user/post you find to be helpful, informative, or deserving of recognition!

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                                  • A
                                    AndrewZ
                                    last edited by

                                    Got it partially working…
                                    1. this Floating rule for TCP is important, but I haven't seen the records in the log until #2 below
                                    2. the most annoying: I had to set "Send All Traffic" enabled on iPad in order to access my local resources. Without this I had no traffic coming to PF over the tunnel.

                                    Any idea how to avoid this #2 and send over the VPN only the traffic for my LAN?

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                                    • O
                                      opti2k4
                                      last edited by

                                      Robert,

                                      did you make any progress? I am having same issue, not seeing anything inside the log related to L2TP. Tried android and win 8.1, both not working. Simply i am not getting l2tp response from the server even though it's on WAN interface.

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                                        Phoenix
                                        last edited by

                                        If any forum admin reads this: Please open a category for L2TP, like there is one for IPSec, PPTP and OpenVPN.

                                        I do have the same trouble. I am very confident, that is is no IPSec issue. I do belive it is a issue with the network stack somehow, see my insights below:

                                        I locate the mpd4 PID
                                        [2.2-RELEASE][root@vicinity.dominion.ch]/var/etc: ps ax | grep mpd
                                        7069  -  Ss    0:02.69 /usr/local/sbin/mpd5 -b -k -d /var/etc -f mpd_wan.conf -p /var/run/pppoe_wan.pid -s ppp pppoeclient
                                        37089  -  Ss    0:00.02 /usr/local/sbin/mpd4 -b -k -d /var/etc/l2tp-vpn -p /var/run/l2tp-vpn.pid -s l2tps l2tps
                                        54867  0  S+    0:00.01 grep mpd

                                        and KILL it
                                        [2.2-RELEASE][root@vicinity.dominion.ch]/var/etc: kill 37089

                                        I start a background tcpdump on the pflog interface, the ip is my public ip I originate from (NATed of course)
                                        [2.2-RELEASE][root@vicinity.dominion.ch]/var/etc: tcpdump -n -e -ttt -i pflog0 host 194.230.155.137 &
                                        [1] 29082
                                        [2.2-RELEASE][root@vicinity.dominion.ch]/var/etc: tcpdump: WARNING: pflog0: no IPv4 address assigned
                                        tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
                                        listening on pflog0, link-type PFLOG (OpenBSD pflog file), capture size 65535 bytes
                                        capability mode sandbox enabled

                                        I start a fake daemon with netcat
                                        [2.2-RELEASE][root@vicinity.dominion.ch]/var/etc: nc -l -u 1701
                                        00:00:00.000000 rule 104..16777216/0(match): pass in on pppoe1: 194.230.155.137.43933 > 212.25.10.250.500: isakmp: phase 1 I ident
                                        00:00:03.975271 rule 89..16777216/0(match): pass in on enc0: 194.230.155.137.55697 > 212.25.10.250.1701:  l2tp:TLSNs=0,Nr=0 *MSGTYPE(SCCRQ) *PROTO_VER(1.0) *HOST_NAME(anonymous) *FRAMING_CAP(AS) *ASSND_TUN_ID(63285) *RECV_WIN_SIZE(1)
                                        ^C

                                        I do see traffic PASS on enc0, but I see no traffic hitting netcat - that is probably why I see NO LOGs

                                        At that point I am lost, I don't know where my packet vanishes.

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                                        • M
                                          meta4
                                          last edited by

                                          i'm unable to get a working config using:

                                          https://doc.pfsense.org/index.php?title=L2TP/IPsec&oldid=7045

                                          i also altered the config using the setup posted by themaninblack earlier in this thread without any success.

                                          trying to connect from osx client and ios.

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                                          • S
                                            Simple77
                                            last edited by

                                            Just a data point that I have gotten L2TP/IPsec working in testing with three virtual machines under Parallels, one pfSense 2.2 server, one Mavericks Mac on the LAN acting as a server, and one Mavericks Mac on the WAN acting as a VPN client.  I can connect and reach the LAN server to share files over AFP.

                                            I pretty much followed the steps in meta4's link above and made sure to use the 'allusers’ PSK identifier, the Floating Firewall Rule was in place (or AFP connections to the LAN didn't pass), and the DH key group to DH key group to 2 (1024 bit) to support the Macs.

                                            I've not enabled this in production as the existing LAN network would likely be unreachable.  If anyone is aware if there is an OpenVPN equivalent of 'push "route 10.0.0.0 255.255.0.0' for the L2TP/IPsec approach, details would be appreciated…

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