Passive Transport Layer Security (TLS) Clients

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Last updated 2014-06-17 (latest revision 2013-12-14)
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This document describes a technique for a Transport Layer Security (TLS) server to initiate a TLS connection to a TLS client. This is accomplished by the TLS client listening on a port number sent from the client to the server during the initial TLS Handshake. This document defines a TLS extension for conveying a port number from the client to the server.


Mohamad Badra (

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