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	<title>Cha Gascon &#187; SCP</title>
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	<description>Inexplicable Software Angst</description>
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		<title>How to Disable known_hosts in ssh</title>
		<link>http://chasys.net/2008/08/how-to-disable-know_hosts-in-ssh/</link>
		<comments>http://chasys.net/2008/08/how-to-disable-know_hosts-in-ssh/#comments</comments>
		<pubDate>Tue, 12 Aug 2008 08:21:26 +0000</pubDate>
		<dc:creator>admin</dc:creator>
				<category><![CDATA[Work]]></category>
		<category><![CDATA[Linux]]></category>
		<category><![CDATA[SCP]]></category>
		<category><![CDATA[SSH]]></category>

		<guid isPermaLink="false">http://www.chasys.net/blog/item/how-to-disable-know_hosts-in-ssh/</guid>
		<description><![CDATA[I&#8217;ve been working on building custom live linux systems for a while now. The problem is, everytime I reboot the live linux machine and I ssh/scp to it, I get this message: @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ @ WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED! @ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ IT IS POSSIBLE THAT SOMEONE IS DOING SOMETHING NASTY! Someone could be eavesdropping [...]]]></description>
			<content:encoded><![CDATA[<p>I&#8217;ve been working on building custom live linux systems for a while now. The problem is, everytime I reboot the live linux machine and I ssh/scp to it, I get this message:</p>
<pre>@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
@    WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED!     @
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
IT IS POSSIBLE THAT SOMEONE IS DOING SOMETHING NASTY!
Someone could be eavesdropping on you right now (man-in-the-middle attack)!
It is also possible that the RSA host key has just been changed.
The fingerprint for the RSA key sent by the remote host is
64:af:03:87:17:e4:23:51:a5:1c:12:e4:47:90:70:b0.
Please contact your system administrator.
Add correct host key in /root/.ssh/known_hosts to get rid of this message.
Offending key in /root/.ssh/known_hosts:1
RSA host key for 192.168.1.179 has changed and you have requested strict checking.
Host key verification failed.</pre>
<p>Normally, I&#8217;ll just remove the offending line from the know_hosts file and get ony with my life, but after repetitive rebooting and repetitive RSA host warnings, it&#8217;s starting to annoy me.</p>
<p>To disable rsa host checking, add a config file to your local .ssh folder,</p>
<p><code>vim ~/.ssh/config</code></p>
<p>and add the following options:</p>
<p><code># automatically adds rsa host key to list of known hosts<br />
StrictHostKeyChecking no<br />
# sets know_hosts file to the data sink so it will never be written<br />
UserKnownHostsFile /dev/null<br />
</code></p>
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