Question

Does the ASA 5510 and ASA 5520 support NetFlow?

Asked by: maxdog0099

I'm having a hard time finding any information on whether the ASA 5510 and ASA 5520 support netflow?

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Asked On
2008-02-20 at 13:49:41ID23179300
Tags

Cisco

,

ASA 5510, ASA 5520

Topics

Network Routers

,

Network Switches & Hubs

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Answers

 

by: giltjrPosted on 2008-02-20 at 18:59:50ID: 20944611

Nope.

 

by: aconaway1Posted on 2008-02-21 at 12:40:25ID: 20951631

I believe that only the ASA 5580 supports NetFlow.

 

by: giltjrPosted on 2008-02-21 at 16:48:03ID: 20953607

I have not read up on the 5580's yet, but netflow is a feature of the software and that I am aware of Cisco has only put NetFlow support into IOS and the new NX.  I don't think they have put it in any version of ASA.

 

by: maxdog0099Posted on 2008-02-21 at 17:12:43ID: 20953756

Thanks everyone for the responses.  I didn't feel that netflow was supported, but could not find any supporting .docs or links to state that...

 

by: aconaway1Posted on 2008-02-21 at 17:24:29ID: 20953812

From:  http://newsroom.cisco.com/dlls/2008/prod_012208.html

'The Cisco ASA 5580 Series uniquely addresses the challenge of high-performance security event handling through advancements in Cisco's NetFlow v9 technology."

 

by: giltjrPosted on 2008-02-21 at 17:35:46ID: 20953875

aconaway, thanks for the link.  It looks like with the 5580 they have released a new level (8.1) of ASA software which now does include NetFlow.  The next question is will the other ASA boxes get support for 8.1 and NetFlow?  I guess as Cisco releases more info we will find out.

 

by: aconaway1Posted on 2008-02-21 at 17:58:16ID: 20953983

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.  :)

 

by: LfuraggananPosted on 2008-02-23 at 06:34:30ID: 20965068

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.

 

by: maxdog0099Posted on 2008-02-27 at 14:20:26ID: 31432690

Thanks for answering this.  I appreciate the help.

 

by: Infolink_DenmarkPosted on 2009-05-04 at 08:05:55ID: 24295887

The netflow feature is a software option, and version 8.1 will get it on all the asa models, even the 5505.

 

by: jakemichaelwilsonPosted on 2009-08-26 at 20:19:30ID: 25194317

Scrutinizer is free and it support NetFlow from the Cisco ASA Firewall:
http://www.plixer.com/products/netflow-sflow/free-netflow-scrutinizer.php

Here is how to configure it:
http://www.plixer.com/blog/netflow/netflow-security-event-logging-with-the-cisco-asa/

Mike

 

by: techtreePosted on 2010-06-17 at 13:50:54ID: 33016464

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.

https://supportforums.cisco.com/docs/DOC-6114;jsessionid=AB591CDEAFF6B779924BAC90890BEF10.node0

20120131-EE-VQP-002

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