http://biblio.gdinwiddie.com/
from http://www.infoq.com/news/2007/09/agile-bibliography-wiki
Wednesday, September 12, 2007
Monday, September 3, 2007
Christopher Alexander Talking About Patterms in CS and other fields
link: http://www.patternlanguage.com/archive/ieee/ieeetext.htm
The Origins of Pattern Theory
the Future of the Theory,
And The Generation of a Living World
by Christopher Alexander
The following presentation was recorded live in San Jose, California, October of 1996, at The 1996 ACM Conference on Object-Oriented Programs, Systems, Languages and Applications (OOPSLA).
The Origins of Pattern Theory
the Future of the Theory,
And The Generation of a Living World
by Christopher Alexander
The following presentation was recorded live in San Jose, California, October of 1996, at The 1996 ACM Conference on Object-Oriented Programs, Systems, Languages and Applications (OOPSLA).
Monday, August 13, 2007
Sftp Vs. Ftps
Totally different things.
SFTP and FTPS (FTP over SSL) are indeed very different and are often confused. The SFTP protocol is actually a subsystem of the SSH protocol whereas the FTPS protocol runs on top of the FTP protocol using an SSL encrypted channel. Unlike the FTPS protocol the SSH/SFTP protocol is a packet based protocol whereas the FTPS protocol is command based. For this reason you will find that FTPS is generally faster than SFTP/SSH. There are also two different types of FTPS, explicit-SSL and implicit-SSL to add to the confusion.
Explicit-SSL - Connection starts on standard FTP port (usually 21) in non-encrypted state. Client then sends AUTH SSL or AUTH TLS command to server requesting that it switches to encrypted channel before sending user credentials. The advantage of explicit-SSL is that the server can handle both encrypted and non-encrypted sessions on the same port (21).
Implicit-SSL - Unlike explicit-SSL, this connection starts off encrypted and there is no going to an unencrypted session. This usually runs on port 990. Advantage is that you can force users to connect using encrypted session, though some servers also allow you to do this at account level in Explicit-SSL.
Some API for SFTP and FTPS are:
FTP/FTPS
http://www.jscape.com/articles/ftp_using_csharp.html
SFTP/SSH
http://www.jscape.com/articles/sftp_using_csharp.html
SFTP and FTPS (FTP over SSL) are indeed very different and are often confused. The SFTP protocol is actually a subsystem of the SSH protocol whereas the FTPS protocol runs on top of the FTP protocol using an SSL encrypted channel. Unlike the FTPS protocol the SSH/SFTP protocol is a packet based protocol whereas the FTPS protocol is command based. For this reason you will find that FTPS is generally faster than SFTP/SSH. There are also two different types of FTPS, explicit-SSL and implicit-SSL to add to the confusion.
Explicit-SSL - Connection starts on standard FTP port (usually 21) in non-encrypted state. Client then sends AUTH SSL or AUTH TLS command to server requesting that it switches to encrypted channel before sending user credentials. The advantage of explicit-SSL is that the server can handle both encrypted and non-encrypted sessions on the same port (21).
Implicit-SSL - Unlike explicit-SSL, this connection starts off encrypted and there is no going to an unencrypted session. This usually runs on port 990. Advantage is that you can force users to connect using encrypted session, though some servers also allow you to do this at account level in Explicit-SSL.
Some API for SFTP and FTPS are:
FTP/FTPS
http://www.jscape.com/articles/ftp_using_csharp.html
SFTP/SSH
http://www.jscape.com/articles/sftp_using_csharp.html
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