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    Success! I've successfully gotten OpenVPN + PAM + FreeRADIUS authenticating!!

    Scheduled Pinned Locked Moved OpenVPN
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    • O
      Owen
      last edited by

      Awesome setup.

      "can write up a tutorial on how to design a pfSense CARP cluster using a public DMZ zone and OpenVPN with FreeRADIUS accounting if you guys would like as thats the way I designed our setup. "

      I'm sure a lot of us would benefit from that tutorial, if you could write it up that would be awesome.

      • Owen
      1 Reply Last reply Reply Quote 0
      • T
        Tele
        last edited by

        This also works with the latest 1.2 beta, thank you!  :)

        1 Reply Last reply Reply Quote 0
        • D
          djjacket
          last edited by

          I am still getting the :

          May 22 15:23:43 openvpn[96569]: OpenVPN 2.0.6 i386-portbld-freebsd6.1 [SSL] [LZO] built on Apr 6 2006
          May 22 15:23:43 openvpn[96569]: PLUGIN_INIT: could not load plugin shared object /usr/local/lib/openvpn-auth-pam.so: Service unavailable: Too many links (errno=31)

          after trying all the suggestions in this thread.

          I assume the module should be at the path listed in the error message?

          I do not have the openvpn-auth-pam.so file on my system.  Is it I am running 1.2-Beta-1.

          Any ideas?

          1 Reply Last reply Reply Quote 0
          • J
            j0emv
            last edited by

            Did you try the pkg_add -r openvpn command from the shell or console?  Your log says it's still using the broken version of openvpn.  It should say April 2007 after it's gotten the correct version I think.

            1 Reply Last reply Reply Quote 0
            • N
              nikobsd
              last edited by

              I got everything done on Server side but i dont know how to define username and password in conf file on Windows any ideas . Thanks :)

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              • J
                jonnytabpni
                last edited by

                Thanks for the great info.

                How would i use this to authenticate against a windows 2003 Active directory using IAS?

                Cheers

                1 Reply Last reply Reply Quote 0
                • GruensFroeschliG
                  GruensFroeschli
                  last edited by

                  Use the LDAP authentication module.
                  http://code.google.com/p/openvpn-auth-ldap/

                  We do what we must, because we can.

                  Asking questions the smart way: http://www.catb.org/esr/faqs/smart-questions.html

                  1 Reply Last reply Reply Quote 0
                  • J
                    jonnytabpni
                    last edited by

                    i don't suppose anyone has a pre-compiled plugin module?

                    I don't mean to sound lazy but I have no idea how to do that deep stuff in linux. I guess i could learn but i thought I'd be cheeky first :)

                    Thanks

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                    • J
                      jonnytabpni
                      last edited by

                      Anyways, just going back to the above freeRADIUS setup, what do you need to add the the client file?

                      I've added:

                      auth-user-pass
                      auth-retry interact

                      but these don't work. the server comes back with AUTH FAILED (or something like that…)

                      Is there something else, apart from username,password and max connections i need to add to the user in the freeradius setup page?

                      Thanks

                      1 Reply Last reply Reply Quote 0
                      • J
                        jonnytabpni
                        last edited by

                        Here is my log:

                        Jan 12 23:25:52 openvpn[343]: TUN/TAP device /dev/tun0 opened
                        Jan 12 23:25:52 openvpn[343]: /sbin/ifconfig tun0 10.87.99.1 10.87.99.2 mtu 1500 netmask 255.255.255.255 up
                        Jan 12 23:25:52 openvpn[343]: /etc/rc.filter_configure tun0 1500 1543 10.87.99.1 10.87.99.2 init
                        Jan 12 23:25:55 openvpn[343]: Listening for incoming TCP connection on [undef]:443
                        Jan 12 23:25:55 openvpn[343]: TCPv4_SERVER link local (bound): [undef]:443
                        Jan 12 23:25:55 openvpn[343]: TCPv4_SERVER link remote: [undef]
                        Jan 12 23:25:55 openvpn[343]: Initialization Sequence Completed
                        Jan 12 23:26:14 openvpn[343]: Re-using SSL/TLS context
                        Jan 12 23:26:14 openvpn[343]: TCP connection established with xx.xx.145.118:3680
                        Jan 12 23:26:14 openvpn[343]: TCPv4_SERVER link local: [undef]
                        Jan 12 23:26:14 openvpn[343]: TCPv4_SERVER link remote: xx.xx.145.118:3680
                        Jan 12 23:26:27 openvpn[1253]: rad_send_request: No valid RADIUS responses received
                        Jan 12 23:26:27 openvpn[343]: xx.xx.145.118:3680 PLUGIN_CALL: plugin function PLUGIN_AUTH_USER_PASS_VERIFY failed with status 1: /usr/local/lib/openvpn-auth-pam.so
                        Jan 12 23:26:27 openvpn[343]: xx.xx.145.118:3680 TLS Auth Error: Auth Username/Password verification failed for peer
                        Jan 12 23:26:27 openvpn[343]: xx.xx.145.118:3680 [client1] Peer Connection Initiated with xx.xx.145.118:3680
                        Jan 12 23:26:28 openvpn[343]: xx.xx.145.118:3680 Connection reset, restarting [0]

                        I have a feeling that my radius server isn't running. I did telnet 10.87.0.1 1892 and it didn't connect (usually if something is listening it comes back with something at least…)

                        1 Reply Last reply Reply Quote 0
                        • J
                          jonnytabpni
                          last edited by

                          ok i did some testing with another RADIUS server on another machine.

                          pfsense can communicate to it ok however with the current type of setting in the users file:

                          user1 User-Password == "password"

                          the RADIUS server always replies back with a Reject (according to tcpdump)

                          If I force an accept reply by doing in the users file:

                          lameusername Auth-Type != Accept

                          tcpdump says that the Radius server is responding with an accept (as I've forced it) but openVPN server still send my openVPN client "Received AUTH_FAILED control message"

                          Any ideas what openvpn wants?

                          1 Reply Last reply Reply Quote 0
                          • E
                            eureka
                            last edited by

                            Hi Jonny!
                            I was having the same problem as you were but i found that i could fix it by making this change to the /etc/radius.conf file.

                            (This is my /etc/radius.conf on my testVM)

                            
acct 192.168.1.1:1892 *passhere*
auth 192.168.1.1:1892 *passhere*

                            You will see that i just changed the file to add the port for the radius server. I found that without this the openvpn server was never even talking to my radius server (found after a LOT of log hunting and debugging). Try making that change then rebooting your box.. It should hopfully work at that point. If not post back here or PM me and ill try and help you out with it =)

                            -Eureka

                            @jonnytabpni:

                            Here is my log:

                            Jan 12 23:25:52 openvpn[343]: TUN/TAP device /dev/tun0 opened
                            Jan 12 23:25:52 openvpn[343]: /sbin/ifconfig tun0 10.87.99.1 10.87.99.2 mtu 1500 netmask 255.255.255.255 up
                            Jan 12 23:25:52 openvpn[343]: /etc/rc.filter_configure tun0 1500 1543 10.87.99.1 10.87.99.2 init
                            Jan 12 23:25:55 openvpn[343]: Listening for incoming TCP connection on [undef]:443
                            Jan 12 23:25:55 openvpn[343]: TCPv4_SERVER link local (bound): [undef]:443
                            Jan 12 23:25:55 openvpn[343]: TCPv4_SERVER link remote: [undef]
                            Jan 12 23:25:55 openvpn[343]: Initialization Sequence Completed
                            Jan 12 23:26:14 openvpn[343]: Re-using SSL/TLS context
                            Jan 12 23:26:14 openvpn[343]: TCP connection established with xx.xx.145.118:3680
                            Jan 12 23:26:14 openvpn[343]: TCPv4_SERVER link local: [undef]
                            Jan 12 23:26:14 openvpn[343]: TCPv4_SERVER link remote: xx.xx.145.118:3680
                            Jan 12 23:26:27 openvpn[1253]: rad_send_request: No valid RADIUS responses received
                            Jan 12 23:26:27 openvpn[343]: xx.xx.145.118:3680 PLUGIN_CALL: plugin function PLUGIN_AUTH_USER_PASS_VERIFY failed with status 1: /usr/local/lib/openvpn-auth-pam.so
                            Jan 12 23:26:27 openvpn[343]: xx.xx.145.118:3680 TLS Auth Error: Auth Username/Password verification failed for peer
                            Jan 12 23:26:27 openvpn[343]: xx.xx.145.118:3680 [client1] Peer Connection Initiated with xx.xx.145.118:3680
                            Jan 12 23:26:28 openvpn[343]: xx.xx.145.118:3680 Connection reset, restarting [0]

                            I have a feeling that my radius server isn't running. I did telnet 10.87.0.1 1892 and it didn't connect (usually if something is listening it comes back with something at least…)

                            1 Reply Last reply Reply Quote 0
                            • E
                              eureka
                              last edited by

                              Hi All,
                              Ive taken the information that j0emv posted and created a simple Howto with my troubleshooting tips and a fix or two. Ive sent it to the wiki-admin to post in the tutorials section but until then you can find it here:

                              http://fusionnetwork.us/index.php/component/content/article/15-general-tutorials/23-pfsense-openvpn-freeradius

                              Hope it help ;)

                              -E

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                              • A
                                alexb
                                last edited by

                                I am running pfsense 1.2Release.
                                I followed the tutorial above but it looks like i do not have the openvpn-auth-pam.so plugin in /usr/local/lib and therefore i get the following error:
                                Mar 17 19:43:12 openvpn[29060]: Exiting
                                Mar 17 19:43:12 openvpn[29060]: PLUGIN_INIT: could not load plugin shared object /usr/local/lib/openvpn-auth-pam.so: Service unavailable: Too many links (errno=31)
                                Mar 17 19:43:12 openvpn[29060]: OpenVPN 2.0.6 i386-portbld-freebsd6.2 [SSL] [LZO] built on Sep 13 2007

                                the tutorial suggest running pkg_add -r openvpn to update to the latest openvpn version, i already have Openvpn 2.0.6, but ran the command anyway, and got an FTP failure error (apparently th file isn't there anymore?):

                                Error: FTP Unable to get ftp://ftp.freebsd.org/pub/FreeBSD/ports/i386/packages-6.2-release/Latest/openvpn.tbz: File unavailable (e.g., file not found, no access)

                                Is there any way i can get openvpn-auth-pam.so copied over to my pfsense ?

                                thanks

                                ALEX

                                1 Reply Last reply Reply Quote 0
                                • E
                                  eureka
                                  last edited by

                                  Hi Alexb,
                                  It looks like you might be running an old version of the 1.2-release. Can you try updating to the 1.2.2x?
                                  Make a backup of your system, then download the "latest.tgz" and start an update.
                                  http://updates.pfsense.com/_updaters/

                                  -E

                                  @alexb:

                                  I am running pfsense 1.2Release.
                                  I followed the tutorial above but it looks like i do not have the openvpn-auth-pam.so plugin in /usr/local/lib and therefore i get the following error:
                                  Mar 17 19:43:12 openvpn[29060]: Exiting
                                  Mar 17 19:43:12 openvpn[29060]: PLUGIN_INIT: could not load plugin shared object /usr/local/lib/openvpn-auth-pam.so: Service unavailable: Too many links (errno=31)
                                  Mar 17 19:43:12 openvpn[29060]: OpenVPN 2.0.6 i386-portbld-freebsd6.2 [SSL] [LZO] built on Sep 13 2007

                                  the tutorial suggest running pkg_add -r openvpn to update to the latest openvpn version, i already have Openvpn 2.0.6, but ran the command anyway, and got an FTP failure error (apparently th file isn't there anymore?):

                                  Error: FTP Unable to get ftp://ftp.freebsd.org/pub/FreeBSD/ports/i386/packages-6.2-release/Latest/openvpn.tbz: File unavailable (e.g., file not found, no access)

                                  Is there any way i can get openvpn-auth-pam.so copied over to my pfsense ?

                                  thanks

                                  ALEX

                                  1 Reply Last reply Reply Quote 0
                                  • A
                                    alexb
                                    last edited by

                                    Updating to a the 1.2.2 version of pfsense is a little too radical of a solution to include the auth-pam plugin to my system. Updating pfsense would require a lot of testing which i am not willing to do just to add the PAM plugin. Anyone has an idea as to :

                                    • Why i do not have the pam plugin on my system as oppose to everyone on this thread who was successful

                                    • How could i get the plugin loaded on my system without upgrading my pfsense version?

                                    1 Reply Last reply Reply Quote 0
                                    • E
                                      eureka
                                      last edited by

                                      @alexb:

                                      Updating to a the 1.2.2 version of pfsense is a little too radical of a solution to include the auth-pam plugin to my system. Updating pfsense would require a lot of testing which i am not willing to do just to add the PAM plugin. Anyone has an idea as to :

                                      • Why i do not have the pam plugin on my system as oppose to everyone on this thread who was successful

                                      • How could i get the plugin loaded on my system without upgrading my pfsense version?

                                      1 Reply Last reply Reply Quote 0
                                      • G
                                        gribbler
                                        last edited by

                                        I've followed here and got everything installed, the RADIUS auth fails:

                                        Tue May 19 07:53:39 2009 us=971748 24.80.65.8:51670 ENVP[24] = 'link_mtu=1543'
                                        Tue May 19 07:53:39 2009 us=971772 24.80.65.8:51670 ENVP[25] = 'dev=tun0'
                                        AUTH-PAM: BACKGROUND: received command code: 0
                                        AUTH-PAM: BACKGROUND: USER/PASS: user1/password1
                                        AUTH-PAM: BACKGROUND: my_conv[0] query='RADIUS Password:' style=1
                                        AUTH-PAM: BACKGROUND: my_conv[0] query='pam_radius: pam_sm_authenticate: Radius failure
                                        ' style=3
                                        AUTH-PAM: BACKGROUND: user 'user1' failed to authenticate: authentication information is unavailable
                                        Tue May 19 07:53:48 2009 us=975656 x.x.x.x:51670 PLUGIN_CALL: POST /usr/local/lib/openvpn-auth-pam.so/PLUGIN_AUTH_USER_PASS_VERIFY status=1
                                        Tue May 19 07:53:48 2009 us=975682 x.x.x.x:51670 PLUGIN_CALL: plugin function PLUGIN_AUTH_USER_PASS_VERIFY failed with status 1: /usr/local/lib/openvpn-auth-pam.so
                                        Tue May 19 07:53:48 2009 us=975706 x.x.x.x:51670 TLS Auth Error: Auth Username/Password verification failed for peer
                                        Tue May 19 07:53:48 2009 us=975837 MULTI TCP: multi_tcp_post TA_SOCKET_READ_RESIDUAL -> TA_SOCKET_WRITE

                                        Does a port need to be opened for FreeRADIUS? What else can I do to debug this?

                                        1 Reply Last reply Reply Quote 0
                                        • G
                                          gribbler
                                          last edited by

                                          OK, I noticed radiussd was core dumping, and that it was commenting on auth_log - so i commented these lines out:

                                          #log_auth =
                                          #log_auth_badpass =
                                          #log_auth_goodpass =

                                          Looks good now.

                                          1 Reply Last reply Reply Quote 0
                                          • H
                                            henry45
                                            last edited by

                                            I've found a radiusplugin (http://www.nongnu.org/radiusplugin/) for OpenVPN, but it seems only to work in LINUX.

                                            My problem is that I would like to limit users with radius (Simultanous Use, et cetera), but it doesn't works, due to the PAM plugin doesn't send any accounting packages to RADIUS (works only with AUTH).

                                            Have anyone got it to work in FreeBSD or have any other clue how to work around this problem?

                                            I'll be running about 3-4 OpenVPN instances and each OpenVPN server will use the same certs - one client can connect to any server.
                                            The problem is that I don't want one client to connect to four different instances of OpenVPN with the same username/password at the same time. Therefore I must set up radius to work properly with OpenVPN so I can set up multi-connection limit (not only AUTH).

                                            It would be great to continue using pfsense on these servers.

                                            Best regards,

                                            Henry Parkon

                                            1 Reply Last reply Reply Quote 0
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