# Match against another index - Domain Categorization

**URL:** <https://discuss.elastic.co/t/match-against-another-index-domain-categorization/107558>\
**Category:** Elasticsearch\
**Created:** [November 14, 2017, 2:26pm UTC](https://discuss.elastic.co/t/match-against-another-index-domain-categorization/107558 "2017-11-14T14:26:11Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![arnydo](https://avatars.discourse-cdn.com/v4/letter/a/f9ae1b/32.png) [@arnydo](https://discuss.elastic.co/u/arnydo)\
**Post date:** [November 14, 2017, 2:26pm UTC](https://discuss.elastic.co/t/match-against-another-index-domain-categorization/107558/1 "2017-11-14T14:26:11Z")

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Hey guys,

I am working on a project and would like to know your thoughts on what I am thinking.

In the end I am essentially trying to build a domain classification/identification system. Packetbeat will be used to pull in all DNS queries going across the network and I would like to be able to have these queries compared against a list of known malware, phishing, botnet, etc domains in a separate index. It would be ideal if I could push these matched categories into a new field.

Is this something that is fairly straightforward to accomplish?

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**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [December 12, 2017, 2:26pm UTC](https://discuss.elastic.co/t/match-against-another-index-domain-categorization/107558/2 "2017-12-12T14:26:18Z")

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