<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
</head>
<body text="#000000" bgcolor="#FFFFFF">
<p>Hi, all.</p>
<p>We've got a specific use case where we need to implement an
stunnel4 'tunnel' in the following format:</p>
<p>Client <---> client-side stunnel4 <---> server-side
stunnel4 <---> server</p>
<p>The specific case for this is because of a server that does NOT
support SSL on the remote side nor client side, and we need to use
two stunnel4 instances to establish the "secure" tunnel.</p>
<p>We can get it working with straight SSL/TLS certificates for a
secure connection between the two but can't seem to add
authentication to this, we want to get the stunnel4 on the client
side and the stunnel4 on the server side to have to have some kind
of authentication/exchange between them.</p>
<p>Whenever we add the PSK options or client certs to the thing, we
immediately get SSL/TLS problems, as it doesn't seem to support
SSL/TLS handshakes properly at that point.</p>
<p><br>
</p>
<p>Is there something I'm missing within the STunnel4 documentation
about establishing the SSL/TLS tunnel AND adding an authentication
component, or is this not possible? It doesn't currently seem
possible based on my testing...</p>
<p><br>
</p>
<p>Thomas<br>
</p>
</body>
</html>