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Full Discussion: how it works ? sftp
Top Forums Shell Programming and Scripting how it works ? sftp Post 302324767 by eskiphill4 on Thursday 11th of June 2009 05:04:46 PM
Old 06-11-2009
ftp is an unencrypted transfer. You may need to provide a password if you are accessing a protected directory. Anonomous ftp works by just being lax in the authentication. You enter anonomous as the account an email address as the password. Few systems even validate the email for form, less accuracy.

sFTP is an encrypted transfer. You may use a password to authenticate to a host. (or you can use a digital certificate).
 

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LEARN ABOUT SUNOS

netrc

netrc(4)							   File Formats 							  netrc(4)

NAME

       netrc - file for ftp remote login data

DESCRIPTION

       The  .netrc  file  contains  data  for  logging in to a remote host over the network for file transfers by ftp(1). This file resides in the
       user's home directory on the machine initiating the file transfer. Its permissions should be set to disallow read access by group and  oth-
       ers (see chmod(1)).

       The following tokens are recognized; they may be separated by SPACE, TAB, or NEWLINE characters:

       machine name    Identify a remote machine name. The auto-login process searches the .netrc file for a machine token that matches the remote
		       machine specified on the ftp command line or as an open command argument. Once a  match	is  made,  the	subsequent  .netrc
		       tokens are processed, stopping when the EOF is reached or another machine token is encountered.

       default	       Same  as  machine name, except that default matches any name. There can be only one default token, and it must be after all
		       machine tokens. The default token is normally used as follows:

		       default login anonymous password user@site

		       Such an entry gives the user automatic anonymous ftp login to machines not specified in .netrc.

       login name      Identify a user on the remote machine. If this token is present, the auto-login process will initiate  a  login	using  the
		       specified name.

       password string Supply  a password.  If this token is present, the auto-login process will supply the specified string if the remote server
		       requires a password as part of the login process. Note: if this token is present in the .netrc file,  ftp  will	abort  the
		       auto-login process if the .netrc is readable by anyone besides the user.

       account string  Supply  an  additional  account password. If this token is present, the auto-login process supplies the specified string if
		       the remote server requires an additional account password. If the remote server does  not  require  an  additional  account
		       password, the auto-login process will initiate an ACCT command.

       macdef name     Define  a  macro.  This	token  functions the same as  ftp macdef. A macro is defined with the specified name; its contents
		       begin with the next .netrc line and continue until a null line (consecutive NEWLINE characters) is encountered. If a  macro
		       named init is defined, it is automatically executed as the last step in the auto-login process.

EXAMPLES

       Example 1: A Sample .netrc File

       A  .netrc file containing the following line:

       machine ray login demo password mypassword

       allows an autologin to the machine  ray using the login name demo with password mypassword.

FILES

       ~/.netrc

SEE ALSO

       chmod(1), ftp(1), in.ftpd(1M)

SunOS 5.10							    3 Jul 1990								  netrc(4)
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