# Using TLS Extensions to Route Traffic and Reduce Port Requirements in Teleport

DevFeed: [Using TLS Extensions to Route Traffic and Reduce Port Requirements in Teleport](<https://devfeed.tech/articles/leave-ssl-in-the-dust-turbocharge-tls-with-alpn-and-sni-29950.md>)

Original publisher: [Read original article](<https://goteleport.com/blog/turbo-charge-tls-with-alpn-sni/>)

Author: ben@goteleport.com (Ben Arent)

Published: 2021-12-21T00:00:00Z

Content type: tutorial

Language: en

Sources: [Teleport](<https://devfeed.tech/sources/teleport.md>)

Topics: [TLS (Transport Layer Security)](<https://devfeed.tech/topics/tls.md>), [TLS handshake](<https://devfeed.tech/topics/tls-handshake.md>), [Routing (disambiguation)](<https://devfeed.tech/topics/routing.md>), [SSL](<https://devfeed.tech/topics/ssl.md>), [Server](<https://devfeed.tech/topics/server.md>)

Tags: [https](<https://devfeed.tech/tags/https.md>), [port](<https://devfeed.tech/tags/port.md>), [route](<https://devfeed.tech/tags/route.md>), [security](<https://devfeed.tech/tags/security.md>), [ssl](<https://devfeed.tech/tags/ssl.md>), [tls](<https://devfeed.tech/tags/tls.md>), [tls-handshake](<https://devfeed.tech/tags/tls-handshake.md>)

## AI overview

This tutorial explains how Teleport uses TLS extensions, including ALPN and SNI, to route traffic more efficiently and reduce the number of required open ports. It also distinguishes the TLS protocol from the X.509 certificates used with it.

## Source excerpt

How to leverage TLS extensions to more efficiently route traffic and reduce port requirements in Teleport.