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Enterprise VA R20

The Enterprise VA R20 delivers awesome load balancing power at an incredible price. This virtual appliance offers unrestricted throughput and bandwidth. You’ll probably never need to upgrade the license, but if you do, we provide a seamless upgrade path.

  • Up to 5 VIPs/4 RIPs
  • Unlimited Performance
  • Perpetual License/Monthly Rental
  • Standard or Premium Support
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Max Conns
Tech Specs

Don't you hate it when companies artificially cripple performance?

Model Bandwidth SSL (2K Key) WAF GSLB Price
Kemp VLM-200 200 Mbps 200 TPS $2,500
Barracuda 340Vx 300 Mbps $1,695
every year!
Enterprise VA R20 8,383 Mbps 12,674 TPS $2,995

Flexible licensing to suit your needs

Monthly Rental

Your pay-as-you-go, hassle free option with 24/7 support included!

Perfect for testing or if you just don’t have the budget right now to invest.

When you’re ready to commit simply pay the difference to upgrade to a perpetual license...


Site License

We are the only vendor who offer a site license.

Yes, that's right — go crazy. Use as many instances as you like, when-ever you want, on any platform you need.

Shockingly good value if you intend to use more than 6 load balancers — a one off investment that you won't regret.


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Simple, Secure and Stress Free

  • configure

    Configure & Test

    Simple to set-up & configure using our intuitive WUI

  • monitor

    Monitor & Control

    Securely monitor your infrastructure & traffic

  • maintain

    Secure & Maintain

    Stress free maintenance of your servers & applications

See for yourself

“Enterprise VA R20 is the intermediary between the hosted desktop service we offer and the customers who use that service. It is crucial because without a solution like Enterprise VA R20 - which can easily handle complex, multi-user, multi-site environments – we cannot offer the kind of flexible multisite access that our customers want day-to-day.“ Ferdie Koukakis, Technical Director, Wanstor Ltd

Download Case Study
4.9 Average
250+ Reviews
"Our company was in desperate need for a solution that would allow us to scale our application delivery throughout our enterprise. After researching and testing solutions, the Loadbalancer.org ENTERPRISE VA was the perfect fit. The ease of deployment, management and scalability was unmatched. We have been extremely pleased with the performance and stability of the product. Loadbalancer.org allowed us to leverage our current virtual infrastructure for unmatched availability and stability. The times I had to get support I was greeted within minutes of sending off the call for help, something that is truly rare now days! Thanks Loadbalancer.org for providing an amazing solution and having an amazing support team to go along with it!"
By James Bowling J.B. Poindexter & Co., Inc.
"The ENTERPRISE VA R20 is a great virtual appliance that allows us to maintain maximum availability, while providing out IT staff with a convenient way to perform maintenance. Rock solid reliability."
By Robin Graham - Buckland
Loadbalancer.org have never failed to deliver on their promise: The best loadbalancers at the best price. I've deployed them from the smallest to the biggest environments, in single, double or multiple server clusters, with and without failover, physical and virtual, and not once have they let me down. And let's not forget the world-class support I've always received from the staff at loadbalancer.org. No matter the issue, no matter how long it took, they've always helped me find the best solution. Especially their ability to think outside the box have set them miles apart from any other IT support organization I've ever had the pleasure of dealing with. I strongly recommend loadbalancer.org, and urge anyone looking for a good loadbalancer to take their offerings into consideration.
By Jorn Lutters - Sophos
"The team at LoadBalancer.org is G R E A T. Not only do they put out a top-notch product, but they support it with intelligent, polite and resourceful humans. A+"
By Nico Aguilera - Reno Diagnostic Centre
Independent reviews: Domestic  or International

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Technical Specifications

Outstanding performance

The Loadbalancer.org appliance – ENTERPRISE VA R20 is the fastest way to scale your website. Simply place two Ultra-reliable Load balancer .org appliances (in failover mode) between your firewall and your web servers. All web requests are handled by the load balancer and dispatched to individual web servers based on the scheduling algorithm you select. If any web server fails a health check it is immediately taken out of the cluster so that your customers are not affected.


  • Server Load Balancing (SLB) for any TCP or UDP based protocol.
  • SSL Acceleration/Offload.
  • Layer 7 Content Switching.
  • This model is restricted to 20 real servers (5 VIPs * 4 RIPs).
  • No bandwidth, performance or feature limitations.
  • High performance Direct Routing (N-Path), TUN, NAT & SNAT.
  • Schedulers: Round Robin, Least Connection, Weighted Least Connection, Weighted Round Robin.
  • Dynamic Schedulers: Windows & Linux feedback agents, Custom HTTP feedback option.
  • Load balance almost ANY protocol i.e. HTTP, HTTPS, SMTP, POP3, IMAP, Terminal Server etc.
  • Support for Direct Server Return (DSR) configurations
  • Configurable S-NAT support
  • Link aggregation (802.3ad)
  • VLAN Tagging (802.1Q)


  • Unlimited Throughput (Host Dependent)
  • Unlimited SSL TPS (Host Dependent)
  • Unlimited HTTP Page GETs/second (Host Dependent)
  • Unlimited Concurrent Session (Host Dependent)


  • PCI-ready SSL Implementation
  • Unlimited support for SSL Certificates
  • Support for Third Party Certificates
  • Automated SSL Certificate Chaining
  • SSL Certificate Signing Request (CSR) Generation
  • PFX upload and conversion
  • Proxy protocol support

Security Functionality

  • Fully integrated WAF (Web Application Firewall)
  • Persistent White/Black List (Access Control List system)
  • Firewall filtering (full iptables scripting support)
  • Firewall lock down wizard
  • DDOS mitigation both at layer 4 & 7
  • Virtual patching
  • HTTP & SYN Flood protection
  • Block SQL Injection Attacks
  • Prevent Cross Site Scripting (XSS)
  • Stop Hackers Exploiting Software Vulnerabilities

Health checking and high availability

  • ICMP health checking of server farm machines
  • Application health checking for DNS, FTP, HTTP, HTTPS, IMAP, NNTP… and many more.
  • Complex manually scripted health checks
  • Automatic reconfiguration for defective real server machines
  • Automatic replication of static & dynamic configuration from master to slave load balancer.
  • Stateful Failover (persistence table replication)
  • One click secure clustered pair configuration


  • Secure, SSH, HTTP and HTTPS for remote access administration
  • Fully configurable using Web User Interface
  • Easy start configuration and maintenance wizards
  • WUI-based Help Assistant
  • Virtual Service Configurations can be edited and tuned on-the-fly
  • Real time performance and availability displays
  • Optionally configure console port for local administration
  • Remotely scriptable Command Line Interface (LBCLI) Option
  • Local and Remote syslogd support
  • Selective restore of physcial and Virtual Service data
  • Support for Connection Draining or halting with or without persistence
  • Software and Security updates available on & off-line
  • WUI Log Reporting with Tabbed Browser Support
  • SNMP support for performance metrics
  • Full root access to with a multitude of diagnostic tools tcpdump etc.

Scheduling and balancing methods

  • Round Robin
  • Weighted Round Robin
  • Least Connection
  • Weighted Least Connection
  • Agent-based Adaptive (Windows and Linux Agents)
  • Layer 7 Content Switching
  • Destination Hash for transparent proxy

L4/L7 Sticky (Persistence)

  • Connection persistence based on
  • – Source IP address
  • – SSL Session ID
  • – Passive Cookie
  • – Active Cookie (Insert)
  • – RDP Cookie / Session Broker
  • – X-forwarded for header (better than SupperHTTPS)
  • Port following (Persistence on multiple combined ports)
  • Multiple fallback options i.e. use source IP if no cookie found


  • VMware
  • Hyper-V
  • KVM
  • VirtualBox
  • Xen

Virtual Product Summary
Enterprise VA R20
Enterprise VA MAX
High Performance Unrestricted
Throughput 13Gbps 13Gbps
HTTP RPS 126,237 126,237
Maximum Connections 31,200,000 31,200,000
SSL TPS (1K Keys) 12,674 12,674
Services (Virtual IPs) 5 IPs Unlimited
Servers (Real IPs x Virtual IPs) 4 x 5 = 20 Unlimited
Price $2,995 $4,995

Surely you must have a question?