Finally, Cisco ASA NSEL details from a best at NetFlow reporting solution.
NSEL allows for reporting on the non-traditional elements such as username,
NAT, ACLs, etc. If you have not worked with technology before you may be
pondering where all of this information comes from, and what it means. Today
I will help clarify this for you by comparing Cisco’s event ID’s to
You may have already noticed that NSEL is similar to syslogs; before Cisco
ASA Release 8.1, Cisco ASA events were exported exclusively through system
log messages and SNMP traps. NSEL can transmit much of the same syslog
information in a less CPU-intensive, more secure and bandwidth-efficient way.
Because of the way it was implemented most of the NSEL events will have a
Now let’s first take a look at the Cisco ASA Event ID’s:
• 0—Default (ignore)
• 1—Flow created
• 2—Flow dele... (more)
In this blog I’ll show you how to use Cisco ASA NSEL (aka Cisco ASA
NetFlow) reporting to monitor your Cisco ASA firewall ACLs. With the addition
of our Cisco Advanced Reporting module you can run many useful NetFlow
reports — Network Performance Monitoring (Medianet), Performance Routing,
Network Based Application Recognition (NBAR) — but today we’re going to
focus on Cisco ASA NSEL Access Control List (ACL) reports.
Have you ever asked yourself, why is my Cisco ASA Firewall denying flows? Our
NetFlow analyzer provides you with historic trends and the most powerful
NetFlow rep... (more)
We’ve blogged about the differences between NetFlow and sFlow before but
this debate continues to come up often enough and has been going on long
enough that it needs to be put to rest once and for all. So let’s cut right
to the chase:
The only people that ever say “sFlow is better than NetFlow” are those
that haven’t used both and seen the difference for themselves.
This statements isn’t based on a bias toward a particular vendor or any
kind of business driver but rather opinions formed over years of operational
experience with both flow technologies.
Most customers that I’ve... (more)
Palo Alto Networks NetFlow support is now available and with the latest
version of our NetFlow monitoring solution you can get NAT and also
application reporting for this firewall.
Today I’ll be providing step by step instructions on how to configure
NetFlow for this device, and also show an example of the extended NetFlow
How to configure Palo Alto Networks NetFlow
There are 2 basic steps for configuring the Palo Alto Networks firewall to
1. Define a NetFlow server profile – this specifies the frequency of the
export along with the NetFlow... (more)
What is Application Performance Management (APM)? Like a lot of good
questions, it depends on your business needs. What is the goal of an ideal
APM? Does it mean 99.999% availability? Perhaps it is a favorable overall
end user experience when using the application but, as compared to what?
My point is that Application Performance Management / Monitoring means
different things to different businesses and it can even depend on the
What is the Goal of APM
“Begin with the goal in mind.” I wish I could take credit for that
quote. What is the goal of the APM? H... (more)