How-tos
Wizardry from our load balancer experts
How-tos
Using Postman with the Loadbalancer.org API
Before we can connect to the loadbalancer appliance using SSH, we first need to allow this action through the Appliance Security Options via Local Configuration and then, Security...
WAF
Handling large requests with a Web Application Firewall (WAF) while avoiding Denial of Service (DoS) attacks
Sometimes, we need to pass unusually large HTTP requests through our WAF stack...
HAProxy
How to rate limit with HAProxy Stick Tables and the WAF
A while ago I was asked if it would be possible to apply some general rate limiting in HAProxy and the WAF, in order to help prevent DOS-style attacks on a customer's servers...
High Availability
How to set up email notifications on your Loadbalancer.org appliance
Email notifications are a great way of alerting you to any changes or issues within your load balancer or high availability cluster...
How-tos
When is it right to SSL offload?
It's a fair question, right? Let's take away the strain of SSL terminations from our application servers and let the load balancers deal with it. After all, why would we want to bog down our nifty application with network-level considerations?..
Comparisons
How many network ports do you need on a hardware load balancer?
The only real reason for separate network ports is physical redundancy. Because the other primary reason (security segregation) can be easily implemented using VLANs...
How-tos
Ever wondered how you can avoid the pain of F5 iRules?
Many things in tech are over-complicated for no reason, and iRules are a prime example of that...
HAProxy
HAProxy ACL rules don't have to be painful
We love complex rules. Although, we have seen some pretty scary config files...
How-tos
Simplifying web application security with the Core Rule Set v3
A WAF isn't a magic bullet, but, as part of a defense in depth strategy, a properly configured WAF should catch and stop common, everyday attacks...
How-tos
I wonder…Can HAProxy Proxy Protocol fix my Secure Web Gateway routing problem?
All Secure Web Gateways require client IP transparency in order to implement any proper kind of security and authentication. Which can be a real pain if you have a load balancer in the middle...
How-tos
Extending Net-SNMP for infrastructure monitoring
Monitoring your infrastructure is a crucial task, and (regardless of the software you've chosen) requires you to make use of the Simple Network Management Protocol (SNMP)...
Automation
Solving the Layer 4 ARP problem on Linux with Ansible
The "ARP problem" for Layer 4 DR (Direct Routing) mode is something that needs to be solved for each of your Real Servers in the virtual service...
HAProxy
A+ Qualys with HAProxy — The Secret Sauce
So you're probably here because you want to know how to achieve an A+ rating for your SSL web server on Qualys. A quick fun fact: did you know the A+ and A rating are in fact the same?..
How-tos
How to migrate your Loadbalancer.org appliance from hardware to virtual
If you want the configurations to differ slightly from the hardware to virtual appliance, such as changing IP's, speak to our support team so they can best advise...
How-tos
Load balancing Leostream Connection Broker and Leostream Gateway for high availability
At its core, Leostream provides a connection broker and remote access gateway which provide you with the tools to build a completely customisable VDI solution to your specific business needs...
Automation
Automation of the initial setup of your Loadbalancer.org appliance (VMware Edition)
Although our appliances are absolutely awesome and fun to use, going through the same process many times may become slightly tedious!..
WAF
Extending ModSecurity: How to add completely custom WAF functionality
In this example, I’m going to add a new transformation function to ModSecurity to calculate the Scrabble score of a variable. This will allow us to block HTTP requests containing query string parameters with a Scrabble score above a chosen threshold...
Integration
How to create a load balancer SSL/TLS certificates report
I should really say that not every request of this type can be turned around on the same day - but we do try!..
Microsoft
How to load balance Microsoft Dynamics using HAProxy
Microsoft Dynamics is a critical ERP and CRM tool, used every day by businesses all over the world. The application therefore needs to be highly available and scalable...
How-tos
How to achieve client source IP transparency with your load balancer
Working with our pre-sales customers, there is a misconception that you always need source IP transparency - which is not always the case...
How-tos
HELP! I’ve Deleted My SSH Keys!
We all have the ability to absent-mindedly break installations with a single click. Here I will show you how not only to break your SSH keys, but also how to restore them in the event you end up doing the same thing as me!..
How-tos
How and when to update your load balancer
A quick guide from our Solutions Engineer, Oliver Warren, outlining when, why and how to update your hardware, virtual and cloud Loadbalancer.org appliances...
Application Management
Load balancing Exchange 2019
Microsoft Exchange 2019 upholds the legacy of Exchange 2016, 2013 (and numerous earlier versions) by continuing to be the ubiquitous mail server and calendaring service of choice for small, medium and enterprise-level organizations the world over...
How-tos
How to install and configure HAProxy Layer 7 on Red Hat Linux
Control how HAProxy will be started, stopped, restarted, reloaded, or monitored...