From: Michele Andreoli (andreoli@pisoft.it)
Date: Sun May 23 1999 - 23:58:41 CEST
I'm testing ssh (Secure Shell) client for muLinux (120k!)
Some info to people who don't know ssh
--------------------------------------
ssh work as an rlogin/rsh replacement. With ssh we can open
a (secure) remote session and also to send command to remote side.
copy filesystem on a LAN
-------------------------
A command as "scp" (secure copy) can be easy emulated using the
secure channel created by ssh.
An idea is to use tar+ssh on both side:
# tar -cf- /etc | ssh -C hostname 'tar -xf-'
With this command, the directory /etc will be tarred and sent, via
the secure channel, to "hostname". -C mean: compress the channel.
On the remote host, ssh execute the "tar -xf-" (uncompress stdin)
and recreate the directory on the destination side
X11 forwarding
--------------
A nice feature: when you ssh in a xterm window, you can start
a remote X application, running on a remote host with X.
You may see the app window on you desktop, without bothering you
with DISPLAY and xhost.
Secure TCP port forwarding
--------------------------
Using ssh, we can forward a request to a local port (for example,
the web, port 80) to another port in a remote host and the data
flows on a secure compressed channel.
It's also possibile do the reverse: forward remote port to local,
but I cannot imagine an utilization yet.
Ok, ok: most of this tricks can be exploited with "netcat", but the good
news is the word ... "secure" :)
Michele
-- Mi sarebbe piaciuto concludere con un'affermazione positiva, ma non me ne vengono in mente. Vanno bene due negative? -- Woody Allen
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