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Full Discussion: Are free public shells for ssh tunneling safe?
Top Forums Shell Programming and Scripting Are free public shells for ssh tunneling safe? Post 302468092 by Neo on Monday 1st of November 2010 03:31:44 PM
Old 11-01-2010
Quote:
Originally Posted by rafunk
Is it secure to use free shells for ssh tunneling? Can the shell provider see and log the sites I visit and passwords I enter?
No, it is not "secure", relatively speaking.

A free sshd server is an "unknown" server and you don't know if the sshd server code has been modified.

If you want to create a "secure ssh tunnel" you need to set up the sshd server used for tunneling with code you trust.

Using a third party free sshd server is not secure at all because you don't know anything about how sshd was set up (or modified) on the free sshd server.
This User Gave Thanks to Neo For This Post:
rafunk
 

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LEARN ABOUT POSIX

sftp-server

sftp-server(1M) 					  System Administration Commands					   sftp-server(1M)

NAME

       sftp-server - SFTP server subsystem

SYNOPSIS

       /usr/lib/ssh/sftp-server

DESCRIPTION

       sftp-server implements the server side of the SSH File Transfer Protocol as defined in the IETF draft-ietf-secsh-filexfer.

       sftp-server is a subsystem for sshd(1M) and must not be run directly. There are no options or config settings.

       To enable the sftp-server subsystem for sshd add the following to /etc/ssh/sshd_config:

       Subsystem   sftp     /usr/lib/ssh/sftp-server

       See sshd_config(4) for a description of the format and contents of that file.

       There is no relationship between the protocol used by sftp-server and the FTP protocol (RFC 959) provided by in.ftpd.

EXIT STATUS

       The following exit values are returned:

       0	Successful completion.

       >0	An error occurred.

FILES

       /usr/lib/sftp-server

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWsshdu 		   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Evolving			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       sftp(1), ssh(1), ssh-add(1), ssh-keygen(1), sshd(1M), sshd_config(4), attributes(5)

       To  view  license  terms,  attribution,	and  copyright	for OpenSSH, the default path is /var/sadm/pkg/SUNWsshdr/install/copyright. If the
       Solaris operating environment has been installed anywhere other than the default, modify the given path to access the file at the installed
       location.

AUTHOR

       Markus Friedl

SunOS 5.10							    30 Jul 2003 						   sftp-server(1M)
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