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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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HAProxy
Dive into the world of open source HAProxy with configurations, tutorials, and best practices. As a core component of our Layer 7 solution, learn to master ACL rules, reverse proxy, SSL termination, and advanced features like rate limiting.
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
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
Malcolm Turnbull
Simple Denial of Service DOS attack mitigation using HAProxy
Denial of Service (DOS) attacks can be used to degrade or cripple the functionality of a site...
Security
HAProxy
Open source
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
Mark Brookes
SSL offload testing with HAProxy and Stunnel
There are a lot of SSL offload throughput statistics available for appliances across the internet but rarely do they detail the way they were tested...
Open source
HAProxy
How-tos
Ben Cabot
3 ways to send HAProxy health check email alerts: Configuration how-to
The ideal way to monitor the health of the real servers is to to have a dedicated monitoring system in place such as Nagios. However this isn’t always an option, so for some they require the loadbalancer to send an alert...
HAProxy
Open source
How-tos
Malcolm Turnbull
HAProxy load balancer feedback agent — We've Open Sourced both our Windows and Linux versions for you!
In general when you are load balancing a cluster you can evenly spread the connections through the cluster. However, with some applications, you might get very high load from just a few users doing heavy work, which can compromise performance...
HAProxy
Microsoft
How-tos
Malcolm Turnbull
What do you mean my pipe is saturated?
Some of the most common questions we get at Loadbalancer.org are performance related. It is quite difficult to give a straight answer to these questions as the real answer is often slightly unsatisfactory...
Performance
HAProxy
Aaron West
HAProxy email alerts guide
As of haproxy-1.6-dev1 it is now possible to send email alerts directly from HAProxy thanks to the excellent work done for us by Simon Horman...
HAProxy
How-tos
Open source
Scott McKeown
Setting up HAProxy with Transparent Mode on Centos 6.x
Transparent mode with HAProxy allows you to see the IP Address of the clients computer while still having a high availability service using HAProxy...
HAProxy
High Availability
Open source
Aaron West
Load Balancing Exchange 2010 CAS Array with HAProxy (Quick Guide)
This Blog is for anyone wanting to load balance the Exchange 2010 CAS role using only open source software...
Application Management
HAProxy
Microsoft