Telnet root login
chuckr at telenix.org
Thu Mar 26 13:07:20 PDT 2009
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This subject hasn't for anything at all to do with current, fellas, let's move
it to chat, ok? it's going to get you into public trouble.
Randy Bush wrote:
>>> tar cjf - . | ssh user at hostb "(cd /desired/path; tar xjf -)"
>> But I can't get full wire speed with ssh; with rsh I can.
> you want security? then it costs a bit. the times i want full wire
> speed are rare. the times i want security are not.
A common misconception among folks is that the full 1024 (or even bigger) key is
only used for figuring out who you are (called authentication), and after you've
got yourself authenticated, a fast algorithm (like IDEA, but it's configureable)
is what's used, for speed. You need to be doing a lot of downloading of big
files in order to feel the slowdown. Yeah, you do lose a very small amount, but
not too much, IDEA's pretty efficient.
And that complaint about rsh, ssh is usable to pass along shell commands, just
the same way. I sometimes use a command like:
ssh targetmachine lpr < filetoprint
when I want to put some file on my local machine into the print queue of a
foreign machine. It' executes lpr on the foreign machine, and transfers the
file for you. Is that the kind of stuff you want in rsh, doable in ssh?
If you've ever used rcp, you have (for ssh) scp, and I've always found the
command syntax pretty simple. I just don't see where the ssh tools are
inferior, in actual operation.
The only thing zI really need to admit is that it seems like all the man pages
ever written for any security stuff, their always written in a very hard to
understand way, so it's hard to get started in ssh, harder than it has to be,
but it's a fantastic tool.
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