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Does Haproxy supports backend on https for reverse proxy

Posted October 1, 2015 75k views
Networking

Hi ,

I have configured Haproxy servere on linux at 80 port and trying to do reverse proxy with backend on https protocol (443). Is it possible in haparoxy ?

Client –>httptraffic –>Haproxy server–>https traffic–>backend server

Is there any other solution for this scenario?

If I use proxy pass through functionality provided on tcp mode. It did work but client can see the backend server(this is not real reverse proxy)

Thanks !!

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sapanasatum
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sapanasatum

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2 answers
asb October 2, 2015

HAProxy 1.4 does not support ssl backends. Unfortunately, this is the default version in Ubuntu 14.04 and a number of other widely used distros releases. There is a PPA that provides more recent versions for Ubuntu. If you have it installed already, you can upgrade it to 1.5 by running:

  • sudo add-apt-repository ppa:vbernat/haproxy-1.5

  • sudo apt-get update

  • sudo apt-get upgrade

Then, in your HAProxy config (/etc/haproxy/haproxy.cfg), you’d have something like this:

frontend www-http
        bind haproxy.public.ip.addr:80
        reqadd X-Forwarded-Proto:\ http
        default_backend www-backend

backend www-backend
        balance roundrobin
        server web-01 web01.priv.ip.addr:443 check ssl verify none
        server web-02 web01.priv.ip.addr:443 check ssl verify none
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  • sapanasatum October 5, 2015
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  • sapanasatum October 5, 2015
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  • sapanasatum October 5, 2015

    Thanks for reply..
    I am using haproxy 1.5 version
    I have followed same configurtaion as per the suggestions.
    when I try to hit this server from browser I get following error
    Url : http://10.177.222.83:8080

    Error on browser :

     An error occurred during a connection to 10.177.222.83:8080. SSL received a record that exceeded the maximum permissible length. (Error code: ssl_error_rx_record_too_long)

    My config file is :

    defaults
    mode                    http
    log                     global
    option                  httplog
    option                  dontlognull
    option http-server-close
    option forwardfor       except 127.0.0.0/8
    option                  redispatch
    retries                 3
    timeout http-request    10s
    timeout queue           1m
    timeout connect         10s
    timeout client          1m
    timeout server          1m
    timeout http-keep-alive 10s
    timeout check           10s
    maxconn                 3000

frontend www-http
        bind  10.177.222.83:8080
        reqadd X-Forwarded-Proto:\ http
        default_backend default-backend

backend default-backend
    balance roundrobin
    server adm-test-platform 10.177.222.82:443 check ssl verify none

    Thanks..
    Really appreciate help here

    edited by asb
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    • asb October 6, 2015

      The Error code: ssl_error_rx_record_too_long error is likely coming from Apache on “adm-test-platform” So it seems like HAProxy is likely working correctly, but that Apache on the backend is not configured for serving SSL over 443 right.

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  • Deep123 January 29, 2016

    Asb , Your response to above question was very useful for me, Just a extension to original question .

    Does HA proxy also support 2 way ssl in a haproxy to backend setup.Basically if backend server only support Mutual authentication . How do i configure HAproxy to send in the client certificate to backend server.

    Client –>httptraffic –>(Haproxy server–>https traffic–>backend server)

    Is this some thing achievable .

    Reason why i want to do this is , I do not want to configure client certificates in each one of the client . but HA proxy acts a proxy client for backend so that i configure the client certificate in HA proxy only.

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skuka1423 June 10, 2018

Does somebody resolved the problem? I have the same problem.

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