June 2004
Intermediate to advanced
1056 pages
39h 58m
English
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Remote Login Services
There may come a time when you need to log into your Mac from another machine or log into another Mac (or Unix system) from your machine. For this, Mac OS X offers remote login services such as the Secure Shell, Telnet, and the remote shell.
The Secure Shell
The Secure Shell (
SSH), is a protocol for using
key-based encryption to allow secure communication between machines.
As its name suggests, it is most commonly used for interactive
sessions with shells on remote machines, so that you can use the
ssh command as described in
“Remote Logins” in Chapter 8.
Mac OS X ships with the OpenSSH (http://www.openssh.com) client and server
software. This includes the ssh command, which
you use to open SSH connections to other machines, and the
sshd daemon program, which you run to allow
other machines to SSH into your Mac.
As with FTP (see Section 12.5), running an SSH service (the
sshd daemon) on Mac OS X is easy: just activate
the Remote Login checkbox in the Sharing pane.
Telnet
Mac
OS X versions prior to 10.1.0 shipped with
telnetd, a daemon that runs the Telnet protocol,
as its default remote login server. Telnet is a decades-old method
for getting a virtual terminal on a remote machine through a network.
However, it’s inherently insecure, because all its
transmissions are cleartext, lacking any sort of encryption, and hence easily readable by malevolent entities monitoring the traffic that enters and leaves your network. Use of Telnet has, in recent years, fallen ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.