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− | The ''Transport Layer Security'' (TLS) protocol gets used to cryptographically protect a socket connection. It is the successor of the ''Secure Sockets Layer'' (SSL) protocol. TLS gets used for the FTP over TLS/SSL (FTPS) protocol.
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− | == Technical Specifications ==
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− | * [http://filezilla-project.org/specs/draft_ssl_v3.txt SSLv3 draft] (obsolete)
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− | * [http://filezilla-project.org/specs/rfc2246.txt <nowiki>RFC 2246</nowiki>] "TLS 1.0"
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− | * [http://filezilla-project.org/specs/rfc4346.txt <nowiki>RFC 4346</nowiki>] "TLS 1.1"
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− | === Points of interest ===
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− | * Section 7.2.1. of RFC 2246: Closure alerts<br />
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− | <blockquote><pre>The client and the server must share knowledge that the connection is
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− | ending in order to avoid a truncation attack. Either party may
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− | initiate the exchange of closing messages.
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− | [...]
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− | Each party is required to send a close_notify alert before closing
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− | the write side of the connection.
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− | </pre></blockquote>
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− | :Lots of FTP servers did not follow the specifications and were vulnerable to truncation attacks. FileZilla will properly fail transfers on those servers.
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− | == See also ==
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− | * [[File Transfer Protocol|FTP specifications]]
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− | * [[Other specifications]]
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− | * [[SFTP specifications]]
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Revision as of 02:08, 7 May 2012
Glad I've fnially found something I agree with!