# I'd like to add tag related to the incoming subnet **URL:** \ **Category:** Logstash\ **Created:** [April 22, 2016, 1:14pm UTC](https://discuss.elastic.co/t/id-like-to-add-tag-related-to-the-incoming-subnet/48173 "2016-04-22T13:14:52Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![gboucha](https://avatars.discourse-cdn.com/v4/letter/g/c5a1d2/32.png) [@gboucha](https://discuss.elastic.co/u/gboucha)\ **Post date:** [April 22, 2016, 1:14pm UTC](https://discuss.elastic.co/t/id-like-to-add-tag-related-to-the-incoming-subnet/48173/1 "2016-04-22T13:14:52Z")
We have many network appliances that send syslog to Logstash. We'd like to add a tag describing the appliance's subnet name or other string concerning the source appliance. Is there a way to do that? ---
**Author:** ![anhlqn](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/anhlqn/32/5454_2.png) [@anhlqn](https://discuss.elastic.co/u/anhlqn)\ **Post date:** [April 22, 2016, 5:53pm UTC](https://discuss.elastic.co/t/id-like-to-add-tag-related-to-the-incoming-subnet/48173/2 "2016-04-22T17:53:49Z")
[https://www.elastic.co/guide/en/logstash/current/plugins-filters-cidr.html](https://www.elastic.co/guide/en/logstash/current/plugins-filters-cidr.html), but it will hurt your Logstash throughput. ---
**Author:** ![gboucha](https://avatars.discourse-cdn.com/v4/letter/g/c5a1d2/32.png) [@gboucha](https://discuss.elastic.co/u/gboucha)\ **Post date:** [April 26, 2016, 9:17am UTC](https://discuss.elastic.co/t/id-like-to-add-tag-related-to-the-incoming-subnet/48173/3 "2016-04-26T09:17:45Z")
Thanks for your advice. I'll try that. ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [July 6, 2017, 5:00am UTC](https://discuss.elastic.co/t/id-like-to-add-tag-related-to-the-incoming-subnet/48173/4 "2017-07-06T05:00:32Z")
Closed on July 6, 2017, 5:00am UTC