Une collection de notes diverses sur des trucs et astuces pour faire des choses avec un ordinateur...
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Secure Shell.
D'après le site \texttt{openssh.org} :
\textit{OpenSSH is a {\em free} version of the SSH\index{SSH} connectivity
tools that technical users of the Internet rely on. Users of
telnet, rlogin, and ftp\index{ftp} may not realize that their password
is transmitted across the Internet unencrypted, but it
is. OpenSSH encrypts all traffic (including passwords) to
effectively eliminate eavesdropping, connection hijacking, and
other attacks. Additionally, OpenSSH provides secure tunneling
capabilities and several authentication methods, and supports
all SSH protocol versions.}
D'après la manpage Linux : \textit{SSHFS (Secure SHell FileSystem)
is a file system for Linux (and other operating systems with a FUSE
implementation, such as Mac OS X or FreeBSD) capable of operating
on files on a remote computer using just a secure shell login on the
remote computer. On the local computer where the SSHFS is mounted,
the implementation makes use of the FUSE (Filesystem in Userspace)
kernel module. The practical effect of this is that the end user can
seamlessly interact with remote files being securely served over SSH
just as if they were local files on his/her computer. On the remote
computer the SFTP subsystem of SSH is used.}
Hélas, ça ne marche pas trop bien depuis un
OpenBSD\index{OpenBSD}\footnote{OpenBSD 5.5 sur sparc64} :
~ $ uname -a
OpenBSD vierge.thsf.net 5.5 GENERIC#159 sparc64
~ $ sshfs tth@ 23/
fuse_mount: Permission denied
Grace à \texttt{<semarie>}\footnote{du Groupuscule des Contributeurs
d'Unix}\index{gcu} : pour un montage en
tant que yuser il faut deux choses :
les bons droits sur \texttt{/dev/fuse*} et un
\texttt{sysctl kern.usermount=1} bien senti.
La semaine prochaine, nous verrons le \textit{mapping} entre les
UID\index{UID} locaux et distants.