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    haproxy question about: dual stack / authentication

    Scheduled Pinned Locked Moved pfSense Packages
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    • junicastJ
      junicast
      last edited by

      Hi,
      I got some questions regarding the haproxy package:

      1. I would like the client with an IPv4 address to send to a different backend than the one with an IPv6 address. How is this possible?
      2. There are websites only authorized people should be able to access. Since I cannot packet filter I would like to make use of some sort of authentication. I have an LDAP (FreeIPA) running in my network so ideally I would like to make use of that. Is that possible? If authentication is not an option, can I restrict access to specific haproxy frontends to specific IPv6 prefixes?
      3. How can I make a simple redirect? sub1.domain1.net is going to sub2.domain1.net.

      This is my config:

      global
              maxconn                 10000
              stats socket /tmp/haproxy.socket level admin
              uid                     80
              gid                     80
              nbproc                  1
              hard-stop-after         15m
              chroot                          /tmp/haproxy_chroot
              daemon
              tune.ssl.default-dh-param       2048
              server-state-file /tmp/haproxy_server_state
      
      listen HAProxyLocalStats
              bind 127.0.0.1:22221 name localstats
              mode http
              stats enable
              stats admin if TRUE
              stats show-legends
              stats uri /haproxy/haproxy_stats.php?haproxystats=1
              timeout client 5000
              timeout connect 5000
              timeout server 5000
      
      frontend shared_frontend-merged
              bind                    2001:fdd0:1:4f::6:80 name 2001:fdd0:1:4f::6:80   ssl crt-list /var/etc/haproxy/shared_frontend.crt_list
              bind                    2001:fdd0:1:4f::6:443 name 2001:fdd0:1:4f::6:443   ssl crt-list /var/etc/haproxy/shared_frontend.crt_list
              bind                    1.23.45.6:80 name 1.23.45.6:80   ssl crt-list /var/etc/haproxy/shared_frontend.crt_list
              bind                    1.23.45.6:443 name 1.23.45.6:443   ssl crt-list /var/etc/haproxy/shared_frontend.crt_list
              mode                    http
              log                     global
              option                  http-keep-alive
              option                  forwardfor
              acl https ssl_fc
              http-request set-header         X-Forwarded-Proto http if !https
              http-request set-header         X-Forwarded-Proto https if https
              timeout client          30000
              acl                     aclcrt_shared_frontend  var(txn.txnhost) -m reg -i ^media\.domain1.net\.net(:([0-9]){1,5})?$
              acl                     acl1_domain4   var(txn.txnhost) -m str -i map.domain4.de
              acl                     aclcrt_map.domain4.de  var(txn.txnhost) -m reg -i ^map\.domain4\.de(:([0-9]){1,5})?$
              acl                     acl1    var(txn.txnhost) -m str -i media.domain1.net
              acl                     aclcrt_media.domain1.net   var(txn.txnhost) -m reg -i ^media\.domain1.net\.net(:([0-9]){1,5})?$
              acl                     acl1    var(txn.txnhost) -m str -i domain5.de
              acl                     aclcrt_domain5.de var(txn.txnhost) -m reg -i ^domain5\.de(:([0-9]){1,5})?$
              acl                     acl1    var(txn.txnhost) -m str -i ah.domain5.de
              acl                     aclcrt_ah.domain5.de      var(txn.txnhost) -m reg -i ^ah\.domain5\.de(:([0-9]){1,5})?$
              acl                     acl1    var(txn.txnhost) -m str -i db.unix.domain2.net
              acl                     aclcrt_db.unix.domain2.net        var(txn.txnhost) -m reg -i ^db\.unix\.domain2\.net(:([0-9]){1,5})?$
              acl                     acl1    var(txn.txnhost) -m str -i git.unix.domain2.net
              acl                     aclcrt_git.unix.domain2.net       var(txn.txnhost) -m reg -i ^git\.unix\.domain2\.net(:([0-9]){1,5})?$
              acl                     acl1    var(txn.txnhost) -m str -i gestioip.domain1.net
              acl                     aclcrt_gestioip.domain1.net        var(txn.txnhost) -m reg -i ^gestioip\.domain1.net\.net(:([0-9]){1,5})?$
              acl                     acl1    var(txn.txnhost) -m str -i domain3.de
              acl                     acl2    var(txn.txnhost) -m str -i www.domain3.de
              acl                     aclcrt_kabeljochen.de   var(txn.txnhost) -m reg -i ^domain3\.de(:([0-9]){1,5})?$
              acl                     aclcrt_kabeljochen.de   var(txn.txnhost) -m reg -i ^www\.domain3\.de(:([0-9]){1,5})?$
              acl                     acl1    var(txn.txnhost) -m str -i gosix.domain1.net
              acl                     aclcrt_gosix.domain1.net   var(txn.txnhost) -m reg -i ^gosix\.domain1.net\.net(:([0-9]){1,5})?$
              acl                     acl1    var(txn.txnhost) -m str -i ideas.domain1.net
              acl                     aclcrt_ideas.domain1.net   var(txn.txnhost) -m reg -i ^ideas\.domain1.net\.net(:([0-9]){1,5})?$
              acl                     acl1    var(txn.txnhost) -m str -i wiki.domain1.net
              acl                     aclcrt_wiki.domain1.net    var(txn.txnhost) -m reg -i ^wiki\.domain1.net\.net(:([0-9]){1,5})?$
              acl                     acl1    var(txn.txnhost) -m str -i riot.domain1.net
              acl                     aclcrt_riot.domain1.net    var(txn.txnhost) -m reg -i ^riot\.domain1.net\.net(:([0-9]){1,5})?$
              acl                     acl1    var(txn.txnhost) -m str -i db.domain1.net
              acl                     aclcrt_db.domain1.net      var(txn.txnhost) -m reg -i ^db\.domain1.net\.net(:([0-9]){1,5})?$
              acl                     acl1    var(txn.txnhost) -m str -i ip.domain1.net
              acl                     aclcrt_ip.domain1.net      var(txn.txnhost) -m reg -i ^images\.domain1.net\.net(:([0-9]){1,5})?$
              http-request set-var(txn.txnhost) hdr(host)
              use_backend srv108_map_domain4_ipvANY  if   aclcrt_map.domain4.de
              use_backend emby.unix.domain2.net_ipvANY  if   aclcrt_media.domain1.net
              use_backend domain5.de_ipvANY  if   aclcrt_domain5.de
              use_backend srv123.unix.domain2.net-ah.domain5.de_ipvANY  if   aclcrt_ah.domain5.de
              use_backend db.unix.domain2.net_ipvANY  if   aclcrt_db.unix.domain2.net
              use_backend git.unix.domain2.net_ipvANY  if   aclcrt_git.unix.domain2.net
              use_backend gestioip_srv119_ipvANY  if   aclcrt_gestioip.domain1.net
              use_backend kabeljochen_srv119_ipvANY  if   aclcrt_kabeljochen.de
              use_backend gosix.domain1.net_srv119_ipvANY  if   aclcrt_gosix.domain1.net
              use_backend ideas.domain1.net_srv119_ipvANY  if   aclcrt_ideas.domain1.net
              use_backend wiki.domain1.net_srv119_ipvANY  if   aclcrt_wiki.domain1.net
              use_backend riot.domain1.net_srv119_ipvANY  if   aclcrt_riot.domain1.net
              use_backend db.unix.domain2.net_ipvANY  if   aclcrt_db.domain1.net
              use_backend ip.domain1.net_srv119_ipvANY  if   aclcrt_ip.domain1.net
      
      frontend http_to_https
              bind                    1.23.45.6:80 name 1.23.45.6:80
              bind                    2001:fdd0:1:4f::6:80 name 2001:fdd0:1:4f::6:80
              mode                    http
              log                     global
              option                  http-keep-alive
              timeout client          30000
              http-request redirect scheme https
      
      backend srv108_map_domain4_ipvANY
              mode                    http
              id                      102
              log                     global
              timeout connect         30000
              timeout server          30000
              retries                 3
              server                  srv108.domain2.net 2001:fdd0:3f:1::6:8123 id 103 check inter 10000
      
      backend emby.unix.domain2.net_ipvANY
              mode                    http
              id                      100
              log                     global
              balance                 leastconn
              timeout connect         30000
              timeout server          30000
              retries                 3
              option                  httpchk OPTIONS /
              server                  emby.unix.domain2.net_0 10.10.101.59:8096 check inter 10000
              server                  emby.unix.domain2.net_1 2009:4444:28d4:1b:d313:1726:1a3b:b596:8096 check inter 10000
      
      backend domain5.de_ipvANY
              mode                    http
              id                      104
              log                     global
              timeout connect         30000
              timeout server          30000
              retries                 3
              server                  srv118.domain2.net 2001:fdd0:3f:6::6:8008 id 105 check inter 10000
      
      backend srv123.unix.domain2.net-ah.domain5.de_ipvANY
              mode                    http
              id                      106
              log                     global
              timeout connect         30000
              timeout server          30000
              retries                 3
              server                  srv123.unix.domain2.net 2001:fdd0:3f:7::5:8080 id 105 check inter 10000
              
      backend db.unix.domain2.net_ipvANY
              mode                    http
              id                      107
              log                     global
              timeout connect         30000
              timeout server          30000
              retries                 3
              server                  mariadb.domain2.net 2001:fdd0:3f:5::4:80 id 105 check inter 10000
      
      backend git.unix.domain2.net_ipvANY
              mode                    http
              id                      108
              log                     global
              timeout connect         30000
              timeout server          30000
              retries                 3
              server                  srv104.domain2.net_gogs_0 5.145.135.92:3000 check inter 10000
              server                  srv104.domain2.net_gogs_1 2001:fdd0:3f::4:3000 check inter 10000
      
      backend gestioip_srv119_ipvANY
              mode                    http
              id                      109
              log                     global
              timeout connect         30000
              timeout server          30000
              retries                 3
              server                  srv119_gestioip 2001:fdd0:3f::7:80 id 105 check inter 10000
      
      backend kabeljochen_srv119_ipvANY
              mode                    http
              id                      110
              log                     global
              timeout connect         30000
              timeout server          30000
              retries                 3
              option                  httpchk OPTIONS /
              server                  srv119_kabeljochen 2001:fdd0:3f::8:80 id 105 check inter 10000
      
      backend gosix.domain1.net_srv119_ipvANY
              mode                    http
              id                      111
              log                     global
              timeout connect         30000
              timeout server          30000
              retries                 3
              option                  httpchk OPTIONS /
              server                  srv119_gosix.domain1.net 2001:fdd0:3f::9:80 id 105 check inter 10000
              
      backend ideas.domain1.net_srv119_ipvANY
              mode                    http
              id                      112
              log                     global
              timeout connect         30000
              timeout server          30000
              retries                 3
              option                  httpchk OPTIONS /
              server                  srv119_ideas.domain1.net 2001:fdd0:3f::a:80 id 105 check inter 10000
      
      backend wiki.domain1.net_srv119_ipvANY
              mode                    http
              id                      115
              log                     global
              timeout connect         30000
              timeout server          30000
              retries                 3
              server                  srv119_wiki.domain1.net 2001:fdd0:3f::e:80 id 105 check inter 10000
      
      backend riot.domain1.net_srv119_ipvANY
              mode                    http
              id                      116
              log                     global
              timeout connect         30000
              timeout server          30000
              retries                 3
              option                  httpchk OPTIONS /
              server                  srv119_riot.domain1.net 2001:fdd0:3f::f:80 id 105 check inter 10000
      
      backend ip.domain1.net_srv119_ipvANY
              mode                    http
              id                      114
              log                     global
              timeout connect         30000
              timeout server          30000
              retries                 3
              option                  httpchk OPTIONS /
              server                  srv119_ip.domain1.net 2001:fdd0:3f::d:80 id 105 check inter 10000
      
      P 1 Reply Last reply Reply Quote 0
      • P
        PiBa @junicast
        last edited by

        @pmisch

        1. you could create a acl for this together with the use_backend action. The acl would check something like matching for a sourceip of: "0.0.0.0/0" and if that matches use the IPv4 backend..

        2. you can create a list of hosts&networks in the pfSense/firewall/aliases and define a ACL for the source-ip to be present in that list. It should be possible to mix both your allowed ipv6 and ipv4 client addresses in that list.

        3. it is possible to create a 'action' to perform a 'http-request redirect' put in the 'rule' something like "location https://sub2.domain1.net/" and of course add the acl name with the rule to check for the 'hostname matches' 'sub1.domain1.net'

        1 Reply Last reply Reply Quote 1
        • junicastJ
          junicast
          last edited by junicast

          I tried 1. and I cannot find a way to make it work. I end up with two frontend definitions. There's one for IPv4 where I say
          Source IP matches IP or alias 0.0.0.0/0
          and there's one frontend where I say
          Source IP machtes IP or alias ::/0
          Both frontends have a different backend chosen.
          The problem seems to be that any given IPv4 address also matches to ::/0 in haproxy. As a dirty workaround I started using 2003::/3 for the acl. That works.
          Point 2. and 3. also worked fine after some experimenting. Thank you very much.

          P 1 Reply Last reply Reply Quote 0
          • P
            PiBa @junicast
            last edited by

            @pmisch
            For 1. , creating the ACL is only half the job, you must use it to perform the proper 'action' where you would put a 'use_backend' action that will be performed if the acl matches.

            Something like this effectively:

            acl request_is_made_over_ipv4 src 0.0.0.0/0
            use_backend MyIPv4backend if request_is_made_over_ipv4
            use_backend MyIPv6backend if !request_is_made_over_ipv4
            
            1 Reply Last reply Reply Quote 1
            • junicastJ
              junicast
              last edited by

              Thank you @PiBA. I changed my actions so that they use the ACLs. Works quite nicely.
              Regarding IP Filter / Authentication I found this article:
              https://hochwald.net/user-authentication-with-haproxy-on-pfsense/
              I have not tried it, yet but I really prefer authentication over IP filter since you do not see if the filter works when you come from an authorized IP.
              I would have preferred an LDAP user backend but a static user list will suffice for me, too.

              1 Reply Last reply Reply Quote 0
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