Latest post
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...
Back to all posts
How-tos
Find step-by-step technical guides and tutorials for load balancer configuration. Learn how to master Layer 4, 7 and GSLB, automate deployments with our API/CLI, and configure advanced features like SSL termination, health checks, and HA clustering.
Aaron West
I didn't realise NTP was so important for medical imaging systems like PACS and VNA
We can write custom health checks specific to your environment checking availability of servers as well as other backend systems such as REST servers, databases and storage...
Healthcare
Application Management
How-tos
Ben Cabot
Integrating your load balancer with auto scaling groups in EC2 (Amazon AWS)
The Loadbalancer.org for AWS appliance will monitor auto scaling groups, update configs based on auto scaling events and add/remove servers...
AWS / Azure / GCP
How-tos
Aaron West
How to stop TPROXY when used with HAProxy breaking clients in the real server subnet
Once HAProxy is running transparently, it will allow the real server to see the client IP so the real server will reply directly back to the client bypassing the load balancer...
Open source
How-tos
HAProxy
Rob Cooper
Load balancing Microsoft Remote Desktop Services in AWS
Using the flexibility of both AWS and our Enterprise AWS appliance, it's possible to configure a secure and robust load balanced Remote Desktop Services deployment to suit a range of requirements...
Application Management
Microsoft
AWS / Azure / GCP
Aaron West
Supporting two default gateways on your load balancer with PBR (Policy Based Routing)
Policy Based Routing is a clever way to give us more control over which routing path connections will take. It allows us to specify custom routing tables and then add rules offering fine grained control over which routing table a connection will use...
How-tos
Malcolm Turnbull
Blocking invalid range headers using ModSecurity and/or HAProxy (MS15-034 - CVE-2015-1635)
Anomaly score based blocking is more flexible and effective than simple first error blocking...
Security
Open source
HAProxy
Ben Cabot
Transparent Load balancing with HAProxy on Amazon EC2
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...
Open source
HAProxy
AWS / Azure / GCP
Scott McKeown
How do I get an A+ from Qualys SSL, but keep FIPS compliance as well?
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!..
Security
How-tos
SSL/TLS
Rob Cooper
Stunnel X-Forward-For (XFF) with HAProxy and the PROXY Protocol
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...
Open source
HAProxy
How-tos
Rob Cooper
Loadbalancer.org releases patch for the OpenSSL heartbleed vulnerability CVE-2014-0160
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...
Security
How-tos
SSL/TLS
Rob Cooper
Load Balancing Exchange 2013
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...
Application Management
Microsoft
How-tos
Rob Cooper
Load Balancing Exchange 2010
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...
Application Management
Microsoft
How-tos