# Cisco ASA netflow: Ignoring Netflow version v15409

**URL:** <https://discuss.elastic.co/t/cisco-asa-netflow-ignoring-netflow-version-v15409/113451>\
**Category:** Logstash\
**Created:** [December 28, 2017, 1:36pm UTC](https://discuss.elastic.co/t/cisco-asa-netflow-ignoring-netflow-version-v15409/113451 "2017-12-28T13:36:05Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![Mario\_van\_Gemert](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/mario_van_gemert/32/13832_2.png) [@Mario\_van\_Gemert](https://discuss.elastic.co/u/Mario_van_Gemert)\
**Post date:** [December 28, 2017, 1:36pm UTC](https://discuss.elastic.co/t/cisco-asa-netflow-ignoring-netflow-version-v15409/113451/1 "2017-12-28T13:36:05Z")

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Trying to "push" my Cisco ASA logs to Logstash. This results in an "Ignoring Netflow version v15409" error.

.conf:  
input {  
udp {  
port =\> 9996  
type =\> "netflow"  
codec =\> netflow {  
versions =\> [9]  
}  
}  
}

output {  
if [type] == "netflow" {  
stdout { codec =\> rubydebug }  
elasticsearch  
{  
hosts =\> ["localhost:9200"]  
index =\> "netflow-%{+YYYY.MM.dd}"  
}  
}  
}

Version Logstash is 6.1.0  
ASA is using UDP  
Do not have a separate template. Is this a possible way to solve this?

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<div class="post-metadata">

**Author:** ![Mario\_van\_Gemert](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/mario_van_gemert/32/13832_2.png) [@Mario\_van\_Gemert](https://discuss.elastic.co/u/Mario_van_Gemert)\
**Post date:** [December 29, 2017, 9:11am UTC](https://discuss.elastic.co/t/cisco-asa-netflow-ignoring-netflow-version-v15409/113451/2 "2017-12-29T09:11:36Z")

</div>

Created filter, in stead of using codec. Problem solved 😀.

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<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [January 26, 2018, 9:11am UTC](https://discuss.elastic.co/t/cisco-asa-netflow-ignoring-netflow-version-v15409/113451/3 "2018-01-26T09:11:41Z")

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