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PRODUCTREVIEW<br />

Enterprise AWS MAX<br />

from<br />

Loadbalancer.org<br />

PRODUCT REVIEW<br />

PRODUCT<br />

REVIEWPRODUCT RE<br />

It was once the case that by over specifying<br />

a resource, for example network or server<br />

capacity, you would assure an adequate<br />

range of responses for a service, but this<br />

arrangement did nothing to help resilience or<br />

the management challenge. Digital<br />

transformation emphasises the critical<br />

importance of application high availability,<br />

including web services, databases and phone<br />

systems. Reliably provisioning these services<br />

for organisational demands is a critical and<br />

important task.<br />

We have reviewed hardware Application<br />

Delivery Controllers (ADC) from<br />

Loadbalancer.org before and always rated<br />

them highly. We are now reviewing the<br />

Enterprise AWS MAX cloud based ADC. As<br />

you can intuit, this is an Amazon AWS cloud<br />

appliance which seamlessly combines with<br />

native AWS capability, creating a powerful<br />

and flexible cloud based ADC.<br />

Appliance deployment requires advance<br />

capacity decisions, but this solution can be<br />

adjusted as you go, paying for what you use:<br />

ideal, for example, for peak retail events on a<br />

Web Server. Existing customers are looked<br />

after and can redeploy their Appliance<br />

licenses to the cloud.<br />

Logging into an AWS account we set up a<br />

subnet, IAM role, permissions and IP<br />

addresses from the main console. Using<br />

Cloud Formation Templates we configured<br />

the remaining infrastructure: we could have<br />

imported user data from an existing<br />

configuration if required.<br />

Although AWS provides its own resilience,<br />

Enterprise AWS MAX offers High Availability<br />

(HA) pairs so a Slave can automatically and<br />

seamlessly assume load balancing duties in<br />

the event of Master failure. Setting this up was<br />

easy - enable root access, enter the slave<br />

address, set the HA configuration and add<br />

the private AWS instance address. For the<br />

majority of services session data is<br />

maintained, so customers that are ready to<br />

checkout continue unaffected.<br />

Next, we set up Auto Scaling which<br />

automatically (based on load conditions or<br />

times) adds or removes server capacity.<br />

Enterprise AWS MAX takes the native AWS<br />

Elastic Load Balancing (ELB) onto the next<br />

stage and was easy to configure using<br />

AWS familiarity.<br />

Using the System Overview screen we<br />

reviewed the status of our scaled servers and<br />

always had a clear understanding of<br />

available capacity, with graphs showing<br />

network bandwidth, system load average and<br />

memory usage. The Service Connections<br />

graph provided detailed Layer-7 statistics over<br />

a variety of time intervals. All available data<br />

can be exported using SNMP.<br />

Native reporting provides lots of graphs<br />

offering, for example, detail about<br />

connections and HA Proxy. Detailed logs<br />

provide in-depth insight into activity by user,<br />

Auto Scaling and WAF, showing what has<br />

been blocked.<br />

With our HA configuration complete we<br />

forced a failover and observed the Slave<br />

engage, which can take up to 30 seconds<br />

using ELB - less if using private IP addressing.<br />

From here Enterprise AWS MAX ran its own<br />

Health Check, polling servers, checking<br />

negotiation, IIS and RADIUS. Using an<br />

external script other specific checks can be<br />

added. ACL rules can be managed and alerts<br />

sent as failure occurs. WAF allows manual<br />

configuration or preconfigured lists can help<br />

with, for example, PCI compliance.<br />

Security is layered around Enterprise AWS<br />

MAX by AWS, but it does not rely on this. If<br />

desired, certificates can be changed and Lock<br />

Down used to stop everything should<br />

nefarious activity be suspected. It supports<br />

SSL offloading and termination to help server<br />

performance. Email notification for updates<br />

as and when they are released allows choice<br />

regarding application, and in an HA pair this<br />

can be done one side at a time.<br />

If your organisation relies on the high<br />

availability of server based resources, then you<br />

will need ADC services. With the network<br />

perimeter moving towards the cloud and<br />

constantly morphing, cloud based ADC makes<br />

incredible sense, and Enterprise AWS MAX<br />

offers great functionality, price, performance<br />

and customer-centric support. NC<br />

Product: Enterprise AWS MAX<br />

Supplier: Loadbalancer.org<br />

Telephone: 0330 380 1064<br />

Web site: www.loadbalancer.org<br />

Email: sales@loadbalancer.org<br />

Price: Starts from $0.55/hr<br />

WWW.NETWORKCOMPUTING.CO.UK @NCMagAndAwards JANUARY/FEBRUARY 2018 NETWORKcomputing 21

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