# UDP port listening

**URL:** https://forums.rocket.chat/t/udp-port-listening/14443
**Category:** Community Support
**Created:** [July 7, 2022, 1:22pm UTC](https://forums.rocket.chat/t/udp-port-listening/14443 "2022-07-07T13:22:26Z")
**Posts on this page:** 1
**Page:** 1

<div class="post-metadata">

### Author: ![snickers](https://avatars.discourse-cdn.com/v4/letter/s/5daacb/32.png) [@snickers](https://forums.rocket.chat/u/snickers)
#### Post date: [July 7, 2022, 1:22pm UTC](https://forums.rocket.chat/t/udp-port-listening/14443/1 "2022-07-07T13:22:26Z")

</div>

### Description

I recently noticed that rocket chat node process opens periodically some random high UDP port for listening. Why It’s doing such things? It’s normal behavior?

for example is something like this:  
tcp 0.0.0.0:3000 0.0.0.0:\* 1431/node  
udp 0.0.0.0:48618 0.0.0.0:\* 1431/node

and this port will close after short period of time, and some time later node again open udp socket with random port.

### Server Setup Information

- Version of Rocket.Chat Server: 4.6.1
- Operating System: Ubuntu 18.04
- Deployment Method: tar
- Number of Running Instances: 1
- DB Replicaset Oplog: 1
- NodeJS Version: 14.18.3
- MongoDB Version: 4.2.19
- Proxy: haproxy
- Firewalls involved: no