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<p>mechanisms are vulnerable to being intercepted by <a href="page.php?w=Man-in-the-middle_attacks">Man-in-the-middle attacks</a>.Extensions to Telnet provide <a href="page.php?w=Transport_Layer_Security">Transport Layer Security</a> (TLS) security and <a href="page.php?w=Simple_Authentication_and_Security_Layer">Simple Authentication and Security Layer</a> (SASL) authentication that address the above concerns.  However, most Telnet implementations do not support these extensions; and they do not address other vulnerabilities such as parsing the</p><p>
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