Re: Difference between SCP and SFTP ?
From: Richard E. Silverman (res_at_qoxp.net)
Date: 03/02/05
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Date: 02 Mar 2005 15:51:09 -0500
>>>>> "sky" == sky diver <sky_diver_@excite.com> writes:
sky> David, just for clarification, are you saying that a command
sky> shell is not required with sftp?
It depends on the server implementation. Many servers execute all
programs on the user's behalf with $SHELL -c, and furthermore the sftp
server is often an external program run via this mechanism. However, it
need not be so -- for example, the Tectia sshd2 has a built-in sftp
subsystem (as well as an external program which can be used).
Of course, this is all independent of whether some prior, separate check
is made for a "valid" shell for login authorization, e.g. via PAM and
getusershell(3).
-- Richard Silverman res@qoxp.net
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