Introduction
rssh is (or was) a restricted shell for use with
OpenSSH, allowing only
scp and/or sftp, rdist, rsync, and cvs.
Sadly RSSH died a horrible death in 2019 when it became clear that
providing restricted access to arbitrary programs is nearly impossible,
particularly without being extremely expert in all of the programs
involved (including sshd and all of the applications you wish to
restrict). This proved to be an unmanageable task, and support for RSSH
ended with unpatched (and I believe unpatchable) security issues, not
entirely the fault of RSSH itself.
Note: All archives of RSSH source have been removed from the
site.
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