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Table Of Contents  CertiGuide to Security+
 9  Chapter 2:  Communication Security (Domain 2.0; 20%)
      9  2.5  File Transfer

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2.5  File Transfer
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 2.5.2  Blind FTP/Anonymous
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2.5.1  S/FTP

S/FTP is Secure FTP. Secure FTP enhances the original FTP protocol by allowing it to run over an encrypted connection provided by SSH or SSL, taking advantage of the authentication and encryption features in those protocols.

Two versions of the SSH protocol exist. The now outdated (and unsupported) SSH1226, and the newer SSH2. A variety of programs exist for SSH2, from commercial offerings to Open SSH227.

[spacer]OpenSSH and a Trojan Horse

Note that a Trojan horse was inserted in the Open SSH code distributed between July 30th and August 1, 2002. If you downloaded Open SSH in that time, you are strongly advised to check the web site.



 __________________

226. http://www.ciac.org/ciac/bulletins/l-047.shtml

227. http://www.openssh.com/

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2.5  File Transfer
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