Last week, Joanne started a series of blogs aimed at providing an overview of some NetFlow basics. I am going to continue this series and take a look at what can be found in the NetFlow Packet header. Built by a device (for example, a router) with NetFlow services enabled, the NetFlow export packet is …
NetFlow V9 Overview: What’s in the NetFlow Packet Header? Read More »
Did you know that using an advanced network reporting solution you can log NAT and firewall events from a Cisco ASR router to a flow collector, and report on this data using NetFlow v9? I’ve been working with a service provider that deploys ASR1006 routers at his ISP’s internet Edge. They use private IP addressing …
Cisco ASR NAT: Advanced Network Reporting Solution Read More »
Microsoft email reporting solutions are an important proactive responsibility that is often not addressed in many companies. Who are the top email senders and receivers? What are the top domains sending or receiving emails? What are the top email subjects and who is involved with these emails? The answers to these questions can be found in …
Yes, you heard it right! Cisco has added support for the sFlow standard in the latest NX-OS 5.0(3)U4(1) release for Nexus 3000 Series switches. The Nexus 3000 series are the first Cisco switches to include hardware support for sFlow, offering scalable wire-speed monitoring of all traffic flowing throughout entire networks of Nexus 3000 series switches. …
Network Address Translation reporting is now available from NetFlow exported from the Cisco ASA. The traditional NetFlow reporting that can be done from the Cisco ASA is great. But have you noticed that when your firewall NATs an address, it becomes the source or destination within your flows, and thus makes NetFlow a lot less …
Network Address Translation Reporting: Cisco ASA NetFlow Read More »