Introduction to Cisco NetFlow
with D.C. Douglas
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Reporting and Analysis: NetFlow, sFlow, Netstream, jFlow, IPFIX, etc.

Plixer delivers a diverse range of free and commercial flow measuring and monitoring tools. From network traffic reporting to network behavior analysis, we offer a full suite.

• Scrutinizer Free NetFlow & sFlow traffic analysis and reporting solution.
• Flow Analytics is a company wide reporting solution for:
  • Archiving of Scrutinizer database beyond 24 hours (i.e. infinite years of data can be saved at selectable intervals). The free version of Scrutinizer drops all data at midnight.
  • Adds several additional traffic analysis Report Types (e.g. Flows, Flow Volume, NBAR Support, etc.).
  • Report on Top Applications, Conversations, Flows, Protocols, Domains, Countries, Subnets, etc., across dozens of routers and switches.
  • Any saved report in Scrutinizer can be configured with a threshold to trigger an alarm.
  • DNS resolution becomes automated and a constant process.
  • Network traffic reporting and alarming on the internal network: SYN, NULL, FIN, XMAS Scans, RST/ACK worms, P2P, ICMP Unreachable, illegal IP addresses, excessive Multicast traffic, known compromised Internet hosts and more.
• Distributed Collectors can be used to analyze network traffic enterprise-wide, from a central location. Dozens of distributed collectors can be supported for companies with thousands of NetFlow and sFlow exporting devices (i.e. routers and switches).
• Service Providers can take advantage of the SPM (Service Provider Module), which allows permissions to be configured per router, switch, interface, etc. per login account. Customizable billing solutions for overusage and invoicing.
• Flowalyzer Free NetFlow Tester can be used to test NetFlow v5 and v9. A very popular free tool.

Recent NetFlow Analysis Blog Entries

Bandwidth Monitoring: SNMP Vs. NetFlow

Posted by mike@plixer.com on February 7, 2010
Bandwidth monitoring hasn't been as big a concern for as long as some of us might think. Ethernet was founded in 1973 by Bob Metcalfe and David Boggs. (Ron Crane is the founder of LAN Media) However, the first RFC for Ethernet "RFC 826" didn't show up until ...

Network Traffic Analysis through a Cisco ASA with NetFlow

Posted by scottr on February 5, 2010
Yes, you can use NetFlow to monitor traffic and bandwidth usage on an ASA. One of the primary uses for NetFlow on a Cisco ASA is as a transport protocol for security events. But if you are using the right NetFlow Analysis tool, you can also analyze traffic using NetFlow ...

NetFlow MPLS PAL reporting on VRF and PE details

Posted by mike@plixer.com on February 4, 2010
Any internet service providers out there interested in MPLS NetFlow reports for network traffic analysis? I was reading this document on NetFlow MPLS Label Export and thought it might be interesting data to report on. For those of you not familiar with this topic, the ...

Scrutinizer Flow Analytics highlighted on TechCrunchIT!

Posted by Jo-G on February 3, 2010
The following article, "Scrutinizer Brings Flow Analytics to SMBs", written by David Diaz, was recently featured on TechCrunchIT. David points out that with the low initial cost for Scrutinizer NetFlow & sFlow Analyzer, it is a very affordable Flow Analytics solution ...

"We have used Scrutinizer on multiple troubleshooting opportunities to isolate what type of traffic was causing the heavy utilization and also what offending devices were doing it. Scrutinizer has more than lived up to its expectations."
Danny, Pension Benefit Guaranty Corp