OpenSSH - An open-source SSH client and server. The Secure Shell (SSH) FAQ - The Secure Shell (SSH) Frequently Asked Questions. Ports of SSH - Includes compilation of SSH documentation and links to client downloads. CERT Advisory CA-1999-15: Buffer Overflows in SSH Daemon and RSAREF2 Library. - Affects all versions of SSH 1.2.27 and lower when built with RSAREF (all US versions.) SSH Communications Security - Provides details of the range of enterprise secure transfer products available and managed file transfer for PCI DSS. OpenSSH for Windows - A free package that installs a minimal OpenSSH server and client utilities in the Cygwin package. IETF Secure Shell (secsh) Working Group - Contact information and papers of a group standardizing the SSH protocol. PHP Secure Communications Library - Pure-PHP LGPL licensed implementation of SSH-1 and SSH-2. SFTP Only Chroot Jail (OpenSSH v6) - Tutorial for jailing users to their home directory and allowing them only SFTP access. FastSSH - Provides free Secure Shell accounts.