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How can I load balance UDP with open source HAProxy?
UDP is a connectionless protocol, meaning it doesn't establish a formal connection or 'handshake' before sending data...
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Application Management
Layer 7 load balancing: The complete guide to boosting application performance
Damian Pacuszka
Solutions Architect & Technical Sales Engineer
Storage
Optimizing data storage: Using content-length headers to solve the 'small objects problem'
Joe Robinson
Professional Services Lead & Partner Project Manager
GSLB
The ultimate guide to Global Server Load Balancing (GSLB): Benefits, uses, and configurations
Joe Robinson
Professional Services Lead & Partner Project Manager
Transparent Load balancing with HAProxy on Amazon EC2
Ben Cabot
Former Lead Cloud Developer
One of our favorite methods of load balancing is using Layer 4 DR because it is transparent and fast. Unfortunately, because of Amazon's infrastructure, this is not possible in EC2 so we need to use another method which means we are left with layer 4 NAT and transparent HAproxy using TProxy...
Simple Denial of Service DOS attack mitigation using HAProxy
Malcolm Turnbull
Co-Founder & CEO
Denial of Service (DOS) attacks can be used to degrade or cripple the functionality of a site...
How do I get an A+ from Qualys SSL, but keep FIPS compliance as well?
Scott McKeown
Former Network Manager
Is getting an A+ rating with the Qualys scanner starting to feel a bit like chasing a mythical unicorn? Every time you get close to catching and keeping the beast — it run's away and they change the rules again!..
Shell-shocked by shell shock? I give you "CMD Caret" ^&
Andrew Smalley
Former Solutions Engineer
There seems to have been so much hype over the recent bash bug, shell shock! And there were all the people in the Microsoft world thinking YES we are so cool we are NOT affected by it!..
Loadbalancer.org product roadmap – new features, release notes and more (as always, a work in progress)
Malcolm Turnbull
Co-Founder & CEO
We've had a chat about this internally and thought that it would be nice to have a permanent post on the blog that we change on the fly as and when customer requirements change...
How to enhance Microsoft IIS health checks using VBscript
Rob Cooper
Lead Technical Author/Architect
By default, the load balancer uses a TCP connect to the port defined in the Virtual Service to verify the health of each real (backend) server. For IIS, this would typically be port 80...
Windows NLB (WNLB) and its disadvantages
Rob Cooper
Lead Technical Author/Architect
WNLB causes switch flooding and does not support multiple scheduling algorithms for distributing client load...
Stunnel X-Forward-For (XFF) with HAProxy and the PROXY Protocol
Rob Cooper
Lead Technical Author/Architect
By default, the source IP address of the packet reaching the web servers is the IP address of the load balancer and not the IP address of the client...
Heartbleed 2.0? Not exactly but more OpenSSL issues have been found
Rob Cooper
Lead Technical Author/Architect
Whilst the Heartbleed bug was relatively easy to exploit, the latest batch of bugs are not...
Loadbalancer.org releases patch for the OpenSSL heartbleed vulnerability CVE-2014-0160
Rob Cooper
Lead Technical Author/Architect
To ensure complete protection all SSL certificates that have been used with a vulnerable version of OpenSSL should be regenerated using a new private key...
Load Balancing Exchange 2013
Rob Cooper
Lead Technical Author/Architect
Exchange 2013 is Microsoft's latest enterprise level messaging and collaboration server. It has been designed for simplicity of scale, hardware utilization, and failure isolation...
Load Balancing Exchange 2010
Rob Cooper
Lead Technical Author/Architect
In Exchange 2010, system functionality is split into five server roles (Mailbox, Client Access (CAS), Unified Messaging, Hub Transport (HT) and Edge Transport). Mandatory roles are Mailbox, Client Access and Hub Transport...