> For the complete documentation index, see [llms.txt](https://http3-explained.haxx.se/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://http3-explained.haxx.se/ko/quic/quic-tls.md).

# TLS을 사용하는 연결

초기 패킷이 연결을 설정하자마자 초기화하는 쪽에서 보안 계층 핸드쉐이크의 설정을 시작하는 암호화 프레임을 보낸다. 보안 계층은 TLS 1.3 보안을 사용한다.

QUIC 연결에서에는 반드시 TLS를 사용해야 한다. QUIC 프로토콜은 프로토콜 고착화를 방지하기 위해 미들박스가 조작하기 어렵게 설계되었다.


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