SSH (Secure shell) is a protocol for secure communication between computers to execute remote commands, transfer data and tunnel TCP connections.

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How to use public key in ~/.ssh for asymmetrical encryption with OpenSSL

I want to do an asymmetrical file encryption: openssl genrsa -des3 -out private.key 4096 openssl rsa -in private.key -pubout -out public.key openssl rsautl -encrypt -pubin -inkey public.key -in a ...
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Most secure SSH server

Which SSH server (compatible with Debian Wheezy) has the fewest (if any) exploitable security bugs?
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Security Implications of a ssh proxy vs ssh tunnel via a box I don't own

In order to access my desktop or the hpc cluster at my university, I need to go though an intermediary server managed by the university. Currently I use the "netcat method" (ssh -W) to access the ...
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Considerations when implementing a key based SSH-like auth scheme

I have a SMTP server where all the users (for an unrelated reason) will have public keys tied to their username and registered with the server. I want to add a non-standard extension that uses these ...
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Test S/KEY support for PCI compliance - CVE-2007-2243

In order for our business to be PCI compliant, we need to prove that we are not vulnerable to CVE-2007-2243. This states that: OpenSSH 4.6 and earlier, when ChallengeResponseAuthentication is ...
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Why my proxy is still having some connections blocked

I am behind a firewall in France. I connect to proxy A, in Ireland with Dante via SSH port 22 and make a tunnel forwarding port 1080. The proxy works as expected but still having a port range ...