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I don't understand why the standard S/Key won't meet your requirements. Every time someone logs in, it sends them a visible "challenge" which includes the index number of the password it wants. Enough information is given to figure out which line of a printed list of one-time-passwords is being requested ...without any sort of coordination with any other ...


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Based on this gist, I've made a concise and clean version: # Prevent sudo timeout sudo -v # ask for sudo password up-front while true; do # Update user's timestamp without running a command sudo -nv; sleep 1m # Exit when the parent process is not running any more. In fact this loop # would be killed anyway after being an orphan(when the parent ...


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Indeed if you provide the salt to the command line you always get the same result. $ echo 'helloworld' | openssl passwd -1 -stdin -salt my-salt $1$my-salt$S/PsLSioHR8ffN8bpIzsk/ $ echo 'helloworld' | openssl passwd -1 -stdin -salt my-salt $1$my-salt$S/PsLSioHR8ffN8bpIzsk/ $ echo 'helloworld' | openssl passwd -1 -stdin -salt my-salt ...


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You'll need to do an offline recovery. The steps are roughly: Shut down the server. Start up another temporary instance. Detach the EBS disk from the original server and attach it to the temporary server. Mount the filesystem. Edit /etc/shadow and copy/paste a known password hash into the ec2-user's entry. Unmount and detach from temporary server. ...


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I'm not sure that there is an officially supported technique or API for this. One method of getting this info (be ready to trigger the antivirus software on your computer) would be to use Mimikatz. mimikatz # lsadump::cache


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That is impossible. Microsoft Exchange simply does not work without Active Directory. If you deleted user in Active Directory, mailbox becames disconnected - without any user to authenticate against.



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