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<p>set up a TLS connection. One of the main ways of achieving this is to use a different <a href="page.php?w=port_%28computer_networking%29">port number</a> for TLS connections. Port 80 is typically used for unencrypted <a href="page.php?w=Hypertext_Transfer_Protocol">HTTP</a> traffic while port 443 is the common port used for encrypted <a href="page.php?w=HTTPS">HTTPS</a> traffic. Another mechanism is to make a protocol-specific <a href="page.php?w=opportunistic_TLS">STARTTLS</a> request to the server to switch the connection to TLS - for example,</p><p>
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