June 2012
Beginner
227 pages
5h 43m
English
Content preview from Macintosh Terminal Pocket GuideBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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SSH roadblocks
When connecting to a Macintosh remotely via SSH, you can run into difficulty and connections may fail. Here are some common reasons:
- Remote Login via SSH not enabled
The Macintosh must be configured to enable Remote Login via SSH, as described in Enabling remote logins.
- SSH configuration issues
SSH servers are highly configurable via the file /etc/sshd_config. Some configurations can deny remote connections in certain situations. See
man sshd_configto learn more.- Firewalls
If your Macintosh is behind a firewall, say, inside a company’s private network, you might not be able to connect to it. (The Mac’s own Firewall application will not interfere with Remote Login.)
- Dynamic IP addresses
Your Macintosh’s internet service provider might change the Mac’s IP address on a regular basis. (In technical terms, your Mac is using DHCP to obtain its IP address.) If so, and you don’t know the current IP address, you won’t be able to connect to your Mac from the outside. This is common for home computer setups. You can get around this issue by signing up for a dynamic DNS service, such as Dyn (http://www.dyn.com), that assigns a consistent hostname to your Mac that you can use externally.
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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.