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Stunnel is SSL and, in SSL, private keys never need to travel. The "SSL ethos" is that X.509 certificates are used to authenticate peers without a pre-distributed shared secret. For example, when you connect your Web browser to https://example.com, the SSL layer recognizes the server certificate and can make sure that it talks to the real "example.com" ...


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No. If you want to use client certificate authentication, then you need to copy the client's private key and certificate to the client from the certificate authority. If you want to allow clients to authenticate a server, then you need to copy the server's private key and certificate from the certificate authority to the server. Exactly how you want to ...


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RHSA = RedHat Security Announcement RHEA = RedHat Enhancement Announcement RHBA = RedHat Bug-fix Announcement I think.


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I've added an authoritative knowledge base article "Explanation of RHSA, RHBA, and RHEA advisories" that answers: What are RHSA, RHBA, and RHEA advisories? What happens if an RHEA or an RHBA is found to have fixed a security flaw? How does advisory numbering work? It's available to the public at: https://access.redhat.com/articles/2130961


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In your Kali machine you could push the netcat listener into the background by issuing: nc -lvp [port] & (Don't use the brackets in your command) You cursor may be on a new blank line, but no worries, just hit enter and it will bring you back to where you can issue another command. Feel free to look at the job in the background by using: jobs ...


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To answer your questions in order: You can see all authorized keys by running the following script with root privileges. #!/bin/bash for X in $(cut -f6 -d ':' /etc/passwd |sort |uniq); do if [ -s "${X}/.ssh/authorized_keys" ]; then echo "### ${X}: " cat "${X}/.ssh/authorized_keys" echo "" fi done Any valid user may create ...



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