<html><head><style type='text/css'>p { margin: 0; }</style></head><body><div style='font-family: Times New Roman; font-size: 12pt; color: #000000'>ssh-keygen -R (hostname)<br> and/or<br>ssh-keygen -R (ip-address)<br><br>Example:<br><br>dlwillson@dwillson-nb-1:1/~ 10:30:51<br>$ ssh dwillson-nb-3<br>@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@<br>@ WARNING: POSSIBLE DNS SPOOFING DETECTED! @<br>@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@<br>The RSA host key for dwillson-nb-3 has changed,<br>and the key for the corresponding IP address 192.168.6.105<br>is unknown. This could either mean that<br>DNS SPOOFING is happening or the IP address for the host<br>and its host key have changed at the same time.<br>@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@<br>@ WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED! @<br>@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@<br>IT IS POSSIBLE THAT SOMEONE IS DOING SOMETHING NASTY!<br>Someone could be eavesdropping on you right now (man-in-the-middle attack)!<br>It is also possible that a host key has just been changed.<br>The fingerprint for the RSA key sent by the remote host is<br>3c:30:82:e2:43:bd:db:a5:a2:32:70:c4:31:0e:ce:10.<br>Please contact your system administrator.<br>Add correct host key in /home/dlwillson/.ssh/known_hosts to get rid of this message.<br>Offending RSA key in /home/dlwillson/.ssh/known_hosts:166<br>RSA host key for dwillson-nb-3 has changed and you have requested strict checking.<br>Host key verification failed.<br>dlwillson@dwillson-nb-1:1/~ 10:30:56<br>$ ssh-keygen -R dwillson-nb-3<br>/home/dlwillson/.ssh/known_hosts updated.<br>Original contents retained as /home/dlwillson/.ssh/known_hosts.old<br>dlwillson@dwillson-nb-1:1/~ 10:31:10<br>$ ssh-keygen -R dwillson-nb-3<br>/home/dlwillson/.ssh/known_hosts updated.<br>Original contents retained as /home/dlwillson/.ssh/known_hosts.old<br>dlwillson@dwillson-nb-1:1/~ 10:31:13<br>$ ssh dwillson-nb-3<br>The authenticity of host 'dwillson-nb-3 (192.168.6.105)' can't be established.<br>ECDSA key fingerprint is 7f:00:b4:19:3a:cb:89:a5:ff:09:85:8c:9f:cc:8a:97.<br>Are you sure you want to continue connecting (yes/no)? yes<br>Warning: Permanently added 'dwillson-nb-3,192.168.6.105' (ECDSA) to the list of known hosts.<br>sudavidw@dwillson-nb-3's password: <br><br><span><br><span name="x"></span>--<br>David L. Willson<br>Trainer, Engineer, Enthusiast<br>RHCE Network+ A+ Linux+ LPIC-1 Ubuntu<br>Mobile 720-333-LANS(5267)<br><br>This is a good time for a r3VOLution.<span name="x"></span><br></span><br></div></body></html>