Flexible NetFlow

Visibility has always been a core component of building effective security policy. Starting with the discovery phase of understanding the behavior of the users and assets on a network through the effective monitoring of the policy once the policy is implemented. Through the collection and analysis o…

The digital transformation of business is fueled by several megatrends – Mobility, IoT, Analytics and Cloud. First, mobile traffic is expected to exceed wired traffic by 2017. Second, IoT devices will triple by 2020. Third, 75% of all companies are planning to, or are already, investing in Big Data.…

Now in part 4 we can combine the the IP to MAC address tables together with the user agents, captured by NBAR2 and  exported using netflow. The result of all this logging is a list of MAC addresses, the IPs a particular MAC address was using at a certain time, and the user agents we saw for this IP…

In the last part we used NBAR2 to classify traffic. To do this the router need to investigate every traffic flow which it sees. Of course, it would be interesting to get this information out of the router and into some logs. This is the ‘how we did this’ post and it is a bit technical. I…

If you’re a network engineer or have been following some of the recent trends in network security space, you may have come across terms such as “erosion of trust”, “zero trust ecosystem”, “the increased attack surface” and “new attack vectors”. What this means for a network engineer is that as…

Over a year ago, Cisco launched its first flagship Catalyst 3850 series switches at Cisco Live London. With its integrated wireless LAN controller functionality and the innovative UADP ASIC, the Catalyst 3850 switches provide a converged wired and wireless platform that is the heart of “One Network”…

Cloud services and SaaS applications is enabling customers to accelerate their business processes and improve employee productivity while lowering their total IT spending. The Cisco IWAN solution is helping organizations adopt cloud applications with an improved user experience by enabling local int…