# Why does my backend work on AWS without a TURN server, but needs one on GCP?
**URL:** https://mediasoup.discourse.group/t/why-does-my-backend-work-on-aws-without-a-turn-server-but-needs-one-on-gcp/6812
**Category:** Deployment & Scalability
**Created:** [August 11, 2025, 9:50am UTC](https://mediasoup.discourse.group/t/why-does-my-backend-work-on-aws-without-a-turn-server-but-needs-one-on-gcp/6812 "2025-08-11T09:50:31Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@sandilya27](https://mediasoup.discourse.group/u/sandilya27)
#### Post date: [August 11, 2025, 9:50am UTC](https://mediasoup.discourse.group/t/why-does-my-backend-work-on-aws-without-a-turn-server-but-needs-one-on-gcp/6812/1 "2025-08-11T09:50:31Z")
I have a MediaSoup backend setup that works fine on AWS without configuring a TURN server.
However, when I deploy the same setup to GCP, peer connections fail unless I configure a TURN server. Can anyone explain the reason behind it?
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### Author:  [@copiltembel](https://mediasoup.discourse.group/u/copiltembel)
#### Post date: [August 11, 2025, 4:11pm UTC](https://mediasoup.discourse.group/t/why-does-my-backend-work-on-aws-without-a-turn-server-but-needs-one-on-gcp/6812/2 "2025-08-11T16:11:19Z")
Check the GCP networking config, more specifically the firewall configuration - is it allowing a connection on the mediasoup ports from any address?
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### Author:  [@sandilya27](https://mediasoup.discourse.group/u/sandilya27)
#### Post date: [August 14, 2025, 5:53am UTC](https://mediasoup.discourse.group/t/why-does-my-backend-work-on-aws-without-a-turn-server-but-needs-one-on-gcp/6812/3 "2025-08-14T05:53:17Z")
I’ve opened both TCP and UDP connections for the port range 40000–49999.