Tag Archives: reverse-proxy

HAProxy 1.6-dev1 and LUA

HAProxy 1.6-dev1 Yesterday, Willy has released HAProxy 1.6-dev1: ANNOUNCE HAProxy 1.6-dev1. This version contains many new features and core improvements. Amongst the new features, one is LUA, contributed by Thierry (HAProxy Technologies developer). NOTE: We invite everyone to download and … Continue reading

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Web application name to backend mapping in HAProxy

Synopsis Let’s take a web application platform where many HTTP Host header points to. Of course, this platform hosts many backends and HAProxy is used to perform content switching based on the Host header to route HTTP traffic to each … Continue reading

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HAProxy and sslv3 poodle vulnerability

SSLv3 poodle vulnerability Yesterday, Google security researchers have disclosed a new vulnerability on SSL protocol. Fortunately, this vulnerability is only on an old version of the SSL protocol: SSLv3 (15 years old protocol). An attacker can force a browser to … Continue reading

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HAProxy and HTTP errors 408 in Chrome

Lately, there was some discussions on HAProxy’s mailing list about 408 errors printed in Chrome browsers. Origin of 408 errors 408 is the status code used by web servers or proxies when the client has not sent a whole HTTP … Continue reading

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Howto write apache ProxyPass* rules in HAProxy

Apache mod_proxy Apache webserver is a widely deployed modular web server. One of its module is called mod_proxy. It aims to turn the web server into a proxy / reverse proxy server with load-balancing capabilities. At HAProxy Technologies, we only … Continue reading

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Asymmetric routing, multiple default gateways on Linux with HAProxy

Why we may need multiple default gateways? Nowadays, Application Delivery controllers (aka Load-Balancers) become the entry point for all the applications hosted in a company or administration. That said, many different type of population could access the applications:   * internal … Continue reading

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Howto transparent proxying and binding with HAProxy and ALOHA Load-Balancer

Transparent Proxy HAProxy works has a reverse-proxy. Which means it maintains 2 connections when allowing a client to cross it:   – 1 connection between HAProxy and the client   – 1 connection between HAProxy and the server HAProxy then manipulate buffers … Continue reading

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