# Why pritunl-vpn uses 443 for connection via client app

**URL:** <https://forum.pritunl.com/t/why-pritunl-vpn-uses-443-for-connection-via-client-app/3457>\
**Category:** Pritunl VPN\
**Created:** [July 28, 2025, 4:38pm UTC](https://forum.pritunl.com/t/why-pritunl-vpn-uses-443-for-connection-via-client-app/3457 "2025-07-28T16:38:57Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![mohijeet-changejar](https://forum.pritunl.com/user_avatar/forum.pritunl.com/mohijeet-changejar/32/1133_2.png) [@mohijeet-changejar](https://forum.pritunl.com/u/mohijeet-changejar)\
**Post date:** [July 28, 2025, 4:38pm UTC](https://forum.pritunl.com/t/why-pritunl-vpn-uses-443-for-connection-via-client-app/3457/1 "2025-07-28T16:38:57Z")

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Recently i was trying to restrict traffic for my pritunl ec2 instance which is public and needs to stop all access from internet, i restricted 0.0.0.0/0 to my vpc cidr range and i saw weird behaviour where i am able to access ui but not able to connect with vpn it self via client i saw my server is using udp it self what could be the reason i need to restrict access for compliance…