# Is it normal for Balena Etcher to open and listen on ports 3434 and 3435?

**URL:** <https://forums.balena.io/t/is-it-normal-for-balena-etcher-to-open-and-listen-on-ports-3434-and-3435/372778>\
**Category:** balenaEtcher\
**Tags:** network\
**Created:** [January 10, 2025, 10:01pm UTC](https://forums.balena.io/t/is-it-normal-for-balena-etcher-to-open-and-listen-on-ports-3434-and-3435/372778 "2025-01-10T22:01:03Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Etch](https://avatars.discourse-cdn.com/v4/letter/e/b19c9b/32.png) [@Etch](https://forums.balena.io/u/Etch)\
**Post date:** [January 10, 2025, 10:01pm UTC](https://forums.balena.io/t/is-it-normal-for-balena-etcher-to-open-and-listen-on-ports-3434-and-3435/372778/1 "2025-01-10T22:01:03Z")

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Hello is it normal operation for Balena Etcher to open and listen on ports 3434 and 3435 when making a bootable usb drive? Just curious why this happens. I am running Balena Etcher 1.19.25 for Mac OS.

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**Author:** ![zesismark](https://avatars.discourse-cdn.com/v4/letter/z/3da27b/32.png) [@zesismark](https://forums.balena.io/u/zesismark)\
**Post date:** [February 13, 2025, 6:42pm UTC](https://forums.balena.io/t/is-it-normal-for-balena-etcher-to-open-and-listen-on-ports-3434-and-3435/372778/2 "2025-02-13T18:42:55Z")

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Yes, it’s normal. Balena Etcher uses po[r](https://thespotifypremium.net/en/spotify-premium-apk-download/)ts 3434 and 3435 for its IPC (Inter-Process Communication) to manage the flashing process. It’s local-only and not an external network connection. Nothing to worry about.