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A few more key setup text improvements.

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expo on server 2020-02-14 01:16:00 +00:00
parent f45b9b8ab8
commit 0327ad19c3
1 changed files with 4 additions and 4 deletions
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8
handbook/computing/keyexchange.html
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@ -20,7 +20,7 @@
<p>Explanation of <a href="https://www.ssh.com/ssh/keygen/">key-pairs and the ssh-keygen command</a>.</p>
<p>A public key file looks like this: <tt>ssh-rsa AAAAB3NzaC1yc2EAAAABIwAAAQEApc9+PAMrDtWa8D8/ZneLP2X9UOYmTITAhTd2DRs8SE+NDgis5pYo/Xhtbrg86ePMAC2YM5xAkYx3jNA/VZ/PkB3gTzYJW3T/zTH+cc7YeWhy9l1zIMaYqeyvw7FxeSBaR4XoLPVtVUlai8DUDiWAEm7VvOKj1n68z1LxVh1MZXLm7btckf6fske2YU9UpjqT++AURQvFheRJ4la7KBJ7LXZ3A/TQ7HQaTpqmcQKCiRj/yZ5FNHxBk0M+ShbHUtz1GhXRCMJ3LZHaw24OJyVJ8YNzBiStBb1qcWCXX7HR9CUNhz7tA5HZyc1lau/1vwk8MSe93lyyLntzJKkqmkW/cQ== wookey@kh</tt>i.e. a long string of characters with 'ssh-rsa' at the start and a 'user'@'machine' ID at the end.</p>
<p>A public key file looks like this: <tt>ssh-rsa AAAAB3NzaC1yc2EAAAABIwAAAQEApc9+PAMrDtWa8D8/ZneLP2X9UOYmTITAhTd2DRs8SE+NDgis5pYo/Xhtbrg86ePMAC2YM5xAkYx3jNA/VZ/PkB3gTzYJW3T/zTH+cc7YeWhy9l1zIMaYqeyvw7FxeSBaR4XoLPVtVUlai8DUDiWAEm7VvOKj1n68z1LxVh1MZXLm7btckf6fske2YU9UpjqT++AURQvFheRJ4la7KBJ7LXZ3A/TQ7HQaTpqmcQKCiRj/yZ5FNHxBk0M+ShbHUtz1GhXRCMJ3LZHaw24OJyVJ8YNzBiStBb1qcWCXX7HR9CUNhz7tA5HZyc1lau/1vwk8MSe93lyyLntzJKkqmkW/cQ== wookey@kh</tt>i.e. a long string of characters with 'ssh-rsa' at the start and an ID at the end (often 'user'@'machine').</p>
<h3>Windows</h3>
<p>On a Windows machine use
@ -28,7 +28,7 @@
<p>Follow the Puttygen instructions, but the really short version is:
<li>Run PuTTYgen</li>
<li>Click on 'Generate'. Follow the instructions. Don't bother adding a passphrase.</li>
<li>Type your name in the 'Key comment' field.</li>
<li>Type your name in the 'Key comment' field. (just so we know who's key it is)</li>
<li>Save the private key (this will create a .ppk file that you will need later)</li>
<li>Don't save the public key - instead copy all of the text from the 'Public key for pasting
+into OPENSSH authorized_keys file' field, and paste that into the email. Make sure not to miss part or add newlines or otherwise mess with it.</li>
@ -64,7 +64,7 @@
<h2>Your second machine</h2>
<p>OK, you have an uploaded and usable key and you can ssh into the expo server. Now you want to set up a key for another machine such as your phone. You don't need a nerd admin now, you can do this yourself. But be <b>extremely careful</b> to follow this exactly. If you innocently rename the files to something that appears more sensible it won't work.
<p>OK, you have an uploaded and usable key and you can ssh into the expo server. If you want to connect from another machine (e.g. your phone) it's better to make another key than try to re-use the first one. You don't need a nerd admin now, you can do this yourself. But be <b>extremely careful</b> to follow this exactly. If you innocently rename the files to something that appears more sensible it won't work.
<ol>
<li>On your new machine, generate a key-pair. Since you are probably using a different operating system on your second machine, read the instructions above for the relevant OS. Yes you will be generating a new key. Do not re-use the key you had already.
<li>This time though, you will want to be sure that the key has a meaningful label. On Linux this means something like this:
@ -75,7 +75,7 @@ If you accepted the defaults, the public key will be called <span style="font-fa
<li>Now copy the public key file to your <em>first machine</em>, the one that is already set up with a working key-pair setup with the expo server. Using email to yourself is easiest.
<li>Now upload the public key using sFTP (Filezilla configured to use sFTP, which uses Pageant by default) to <span style="font-family:monospace; size=x-small; background-color: lightgray">expo.survex.com/home/expo/.ssh/keys/</span>
<li>Now login to the expo server on your first machine and do these commands:<br>
Be <b>extremely careful</b> to type ">>" and not ">" in the fourth line below otherwise you will delete everything.
Be <b>extremely careful</b> to type ">>" and not ">" in the fourth line below otherwise you will delete <i>everyone's</i> logins.
<tt><font color=red">$</font> ssh expo@expo.survex.com
<br><font color=blue">expo@expo:~$</font> cd .ssh
<br><font color=blue">expo@expo:~$</font> cp -p authorized_keys authorized_keys.backup