Tag Archives: infrastructure

Microsoft Remote Desktop Services (RDS) Load-Balancing

Microsoft Remote Desktop services (RDS) Remote Desktop Services, formerly Terminal Services, is a technology from Microsoft that allows users to access remotely to a session-based desktop, virtual machine-based desktop or applications hosted in a datacenter from their corporate network or … 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

Posted in Aloha, architecture, HAPEE, HAProxy, layer7, optimization, performance | Tagged , , , , , , , , | Leave a comment

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

Posted in Aloha, architecture, HAProxy, layer7 | Tagged , , , , , | 2 Comments

Emulating Active/passing application clustering with HAProxy

Synopsis HAProxy is a Load-Balancer, this is a fact. It is used to route traffic to servers to primarily ensure applications reliability. Most of the time, the sessions are locally stored in a server. Which means that if you want … Continue reading

Posted in Aloha, architecture, HAProxy | Tagged , , | 9 Comments

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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SSL Client certificate information in HTTP headers and logs

HAProxy and SSL HAProxy has many nice features when speaking about SSL, despite SSL has been introduced in it lately. One of those features is the client side certificate management, which has already been discussed on the blog. One thing … Continue reading

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Microsoft Remote Desktop Services (RDS) Load-Balancing and protection

RDS, RDP, TSE, remoteapp Whatever you call it, it’s the remote desktop protocol from Microsoft, which has been renamed during the product life. Basically, it allows users to get connected on remote server and run an application or a full … Continue reading

Posted in Aloha, architecture, security, Virtual Desktop Infrastructure | Tagged , , , | 4 Comments