# Extract fields from a log

**URL:** <https://discuss.elastic.co/t/extract-fields-from-a-log/178231>\
**Category:** Logstash\
**Created:** [April 24, 2019, 11:16am UTC](https://discuss.elastic.co/t/extract-fields-from-a-log/178231 "2019-04-24T11:16:22Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![ameni](https://avatars.discourse-cdn.com/v4/letter/a/c2a13f/32.png) [@ameni](https://discuss.elastic.co/u/ameni)\
**Post date:** [April 24, 2019, 11:16am UTC](https://discuss.elastic.co/t/extract-fields-from-a-log/178231/1 "2019-04-24T11:16:23Z")

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hi  
this is a log coming from a firewalll

i need to extract from that message IP\_srs, src\_Port , IP\_dst , dst\_port and make them as fields  
please help me

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**Author:** ![bhavyarm](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/bhavyarm/32/22392_2.png) [@bhavyarm](https://discuss.elastic.co/u/bhavyarm)\
**Post date:** [April 24, 2019, 12:07pm UTC](https://discuss.elastic.co/t/extract-fields-from-a-log/178231/2 "2019-04-24T12:07:18Z")

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Hi,

That depends on how you model your data in elasticsearch.

These are our documents about it: [https://www.elastic.co/guide/en/elasticsearch/guide/current/modeling-your-data.html](https://www.elastic.co/guide/en/elasticsearch/guide/current/modeling-your-data.html)

Thanks,  
Bhavya

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<div class="post-metadata">

**Author:** ![ameni](https://avatars.discourse-cdn.com/v4/letter/a/c2a13f/32.png) [@ameni](https://discuss.elastic.co/u/ameni)\
**Post date:** [April 24, 2019, 1:25pm UTC](https://discuss.elastic.co/t/extract-fields-from-a-log/178231/3 "2019-04-24T13:25:40Z")

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thanks for your answer ,  
so it's not about the grok filter ?

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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:** [May 22, 2019, 1:25pm UTC](https://discuss.elastic.co/t/extract-fields-from-a-log/178231/4 "2019-05-22T13:25:46Z")

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