haproxy question about: dual stack / authentication
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Hi,
I got some questions regarding the haproxy package:- 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?
- 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?
- 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
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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..
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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.
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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'
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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.
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@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
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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.
