OpenSSH: www.openssh.org

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Red Hat/Fedora Mailing Lists: www.redhat.com/mailman/listinfo

SUSE Mailing Lists: www.suse.com/us/private/support/online_help/mailinglists/index.html

SecurityFocus SSH Mailing list: www.securityfocus.com/archive/121

John The Ripper: www.openwall.com/john

Nessus Vulnerability Scanner: www.nessus.org