I believe that only the ASA 5580 supports NetFlow.
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Browse All TopicsI'm having a hard time finding any information on whether the ASA 5510 and ASA 5520 support netflow?
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From: http://newsroom.cisco.com/
'The Cisco ASA 5580 Series uniquely addresses the challenge of high-performance security event handling through advancements in Cisco's NetFlow v9 technology."
NetFlow in a firewall is rare (does it even exist anywhere else?), but you'd think it would be helpful for a lot of people. I imagine the NATting and CPU requirements make it very difficult to implement and run without doing huge rewrites and a huge processor upgrade.
I think I'd pay for it, though, just to have that functionality. :)
While it's not Netflow, the ASDM 6 and IOS 8.0(3) provide a crude way of monitoring where your bandwidth is going.
Go to ASDM - Home - Firewall Dashboard and enable threat detection or enter the lines
threat-detection basic-threat
threat-detection statistics
You'll then have a Top 10 Usage Status Graph that you can use to view Bytes Transferred in last few hours.
Scrutinizer is free and it support NetFlow from the Cisco ASA Firewall:
http://www.plixer.com/prod
Here is how to configure it:
http://www.plixer.com/blog
Mike
According to Cisco:
"The feature was introduced in ASA 8.2.1/ASDM 6.2.1. For information on the feature itself, its functionality and limitations you can read here. The document below presents how to use ASDM to configure the ASA to send Neflow information to the Netflow collector."
This leads me to believe that any ASA that can run those versions of ASA/ASDM can run/support NetFlow.
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by: giltjrPosted on 2008-02-20 at 18:59:50ID: 20944611
Nope.