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I'd like to explain what i know & then describe the scenario what i'd like to know. Please correct me, if i'm wrong.
Whenever we are connecting(ssh'ing) to a host(Let's name it X) for first time, there appears a prompt to add the host to known hosts.when we say "yes" .. the public key of X is added to the user's known_hosts file(which is residing in /home/username/.ssh/known_hosts).
My Question:
Let's think a user who has connected to X,did the same(add the pub. key to known_hosts).
Now the User built a machine with the same host-name(i.e X) & made the public key of X as public key for this newly built machine.
Made the changes in DNS too(directing the request to newly built system).. so when a user from outside trying to connect to the host X using the url(hostname) will be directed to the new host.
Which should not be the way.
How to detect whether the host you're connecting to,is the real one now???
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