TLS specifications: Difference between revisions

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(tmKVNI Post brought me to think, went to mull over!!....)
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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.
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.


== Technical Specifications ==
tmKVNI Post brought me to think, went to mull over!!....
 
* [http://filezilla-project.org/specs/draft_ssl_v3.txt SSLv3 draft] (obsolete)
* [http://filezilla-project.org/specs/rfc2246.txt <nowiki>RFC 2246</nowiki>] "TLS 1.0"
* [http://filezilla-project.org/specs/rfc4346.txt <nowiki>RFC 4346</nowiki>] "TLS 1.1"
 
=== Points of interest ===
 
* Section 7.2.1. of RFC 2246: Closure alerts<br />
<blockquote><pre>The client and the server must share knowledge that the connection is
ending in order to avoid a truncation attack. Either party may
initiate the exchange of closing messages.
[...]
Each party is required to send a close_notify alert before closing
the write side of the connection.
</pre></blockquote>
 
:Lots of FTP servers did not follow the specifications and were vulnerable to truncation attacks. FileZilla will properly fail transfers on those servers.


== See also ==
== See also ==

Revision as of 17:55, 11 February 2012

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.

tmKVNI Post brought me to think, went to mull over!!....

See also