NetFlow Monitoring SolutionWe’ve been getting an increasing amount of requests asking how to monitor cloud services, Google Apps for example, and the impact they’re having on the network. In this blog I’ll discuss some of the different methods for identifying how much of your bandwidth is being consumed by Google.

What are Google’s IP address ranges?

Whether you’re trying to monitor Google Apps for business or monitor Google Apps for education the first, and most challenging thing we have to do is identify Google’s networks. The challenge here is that Google can change their network range at any given time It’s like shooting at a moving target. Luckily, Google has provided us with a simple method to find their IP addresses at any given time.

You can do this by using the dig command, which is part of the BIND DNS service and can be found in many free online dig services, and running:

‘dig -t txt’

This is like asking, “What are Googles IP address ranges?” In the answers section, we can find all of Google’s networks. Keep in mind that these networks can change at any given time, so it’s important to make sure to keep your list up to date.

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How to identify googles networks

Monitoring Google Apps impact on your network

We can take the information we learned in the previous step and apply it to our cloud service monitoring and reporting solution, by adding subnet filters, to see how much of your overall bandwidth is being consumed by Google services. We host our own in-house mail server, so we have a relatively low, but consistent, amount of traffic to Google throughout the day.

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NetFlow Reporting Solutions

Monitoring Google Apps traffic by application

Here comes the most exciting part. With a NetFlow or IPFIX exporter that supports deep packet inspection to identify the layer 7 application, such as a SonicWALL, you can find out exactly how much traffic is being consumed by each Google App.

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Monitoring Cloud Comupting

Best at NetFlow and IPFIX solution

This is only the tip of the iceberg when it comes to what our NetFlow and IPFIX cloud monitoring and reporting solution has to offer. We haven’t even touched on cloud service performance monitoring. If you’d like to learn more, let us know what applications you’ve moved to the cloud and need to monitor. We’re glad to help!

Paul Dube

Paul Dube is the Director of Technical Services at Plixer. He has a passion for enabling individuals and organizations to use highly complex systems to solve business and personal objectives. This passion for problem solving has Paul working with some of the largest enterprises to solve their security and networking challenges and also educating his young daughters on how to enrich their lives with technology. When he's not working, you will find him enjoying time with his family, cooking something delicious on the Big Green Egg, and enjoying the best brews that the locals have to offer.


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