# TCP Out of Order in Kibana

**URL:** <https://discuss.elastic.co/t/tcp-out-of-order-in-kibana/229921>\
**Category:** Kibana\
**Created:** [April 27, 2020, 8:09am UTC](https://discuss.elastic.co/t/tcp-out-of-order-in-kibana/229921 "2020-04-27T08:09:45Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Yungyoung\_Ok](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/yungyoung_ok/32/43465_2.png) [@Yungyoung\_Ok](https://discuss.elastic.co/u/Yungyoung_Ok)\
**Post date:** [April 27, 2020, 8:09am UTC](https://discuss.elastic.co/t/tcp-out-of-order-in-kibana/229921/1 "2020-04-27T08:09:45Z")

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kibana version: 7.6.1

I have a proxy server(IIS) in front of Kibana server.  
Bad Gateway 502 errors are often seen in browsers.  
Error logs are not accumulated in kibana and elasticsearch.

So when I run 'tcpdump', the proxy sends a request, and the kibana disconnects the request.  
like this.....

 ![image](https://us1.discourse-cdn.com/elastic/original/3X/e/a/eaace9e14a46a4d9104792cbfb11baadb4dfbca7.png)

The current Kibana log level is verbose, and the request is not recorded at all.  
(Confirmation with 'X-ARR-LOG-ID')

In general, if the order of requests in TCP communication is incorrect, correcting the order by communicating with each other.  
Why is kibana disconnecting immediately?

Can i fix this?

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<div class="post-metadata">

**Author:** ![Marius\_Dragomir](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/marius_dragomir/32/42087_2.png) [@Marius\_Dragomir](https://discuss.elastic.co/u/Marius_Dragomir)\
**Post date:** [May 4, 2020, 4:40pm UTC](https://discuss.elastic.co/t/tcp-out-of-order-in-kibana/229921/2 "2020-05-04T16:40:08Z")

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That shouldn't be a problem. Maybe there is another underlying problem there.

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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 1, 2020, 4:40pm UTC](https://discuss.elastic.co/t/tcp-out-of-order-in-kibana/229921/3 "2020-06-01T16:40:12Z")

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