# UDP worker dies unable to bind to port

**URL:** <https://discuss.elastic.co/t/udp-worker-dies-unable-to-bind-to-port/132353>\
**Category:** Logstash\
**Created:** [May 17, 2018, 2:26pm UTC](https://discuss.elastic.co/t/udp-worker-dies-unable-to-bind-to-port/132353 "2018-05-17T14:26:39Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![dalamar666](https://avatars.discourse-cdn.com/v4/letter/d/e9bcb4/32.png) [@dalamar666](https://discuss.elastic.co/u/dalamar666)\
**Post date:** [May 17, 2018, 2:26pm UTC](https://discuss.elastic.co/t/udp-worker-dies-unable-to-bind-to-port/132353/1 "2018-05-17T14:26:39Z")

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Hi,

I am trying to collect netflow from an ASA. My UDP worker dies saying it cannot bind to port. It dies .002 seconds after starting. When I run an lsof -nPi on the port there is nothing connected to the port. When I run it without the port I see nothing trying to bind to the port.

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<div class="post-metadata">

**Author:** ![magnusbaeck](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/magnusbaeck/32/44943_2.png) [@magnusbaeck](https://discuss.elastic.co/u/magnusbaeck)\
**Post date:** [May 17, 2018, 8:32pm UTC](https://discuss.elastic.co/t/udp-worker-dies-unable-to-bind-to-port/132353/2 "2018-05-17T20:32:04Z")

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Please show the exact error message.

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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:** [June 14, 2018, 8:32pm UTC](https://discuss.elastic.co/t/udp-worker-dies-unable-to-bind-to-port/132353/3 "2018-06-14T20:32:04Z")

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Closed on June 14, 2018, 8:32pm UTC

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