Medusa DS9 Security System

Medusa DS9

History and Concepts - the first thing you should read

Progress and plans - the actual state of project

README file from the current stable release

Change log of the latest stable release

Download area (or FTP link)

CVS repository

Mailing list archive - it's low traffic and all users are strongly suggested to subscribe

GPG key to verify your downloads.

E-mail to the authors




Trusted BSD




Openwall Project

Linux 2.2.16 support (Tue Jul 25 10:59:23 CEST 2000)
  • Package medusa-0.7.10p1-for-linux-2.2.16.tar.gz supporting newer linux kernels was released. Linux 2.4 and other operating systems or non-intel platforms will be supported soon.
  • Commercial support announce (Thu May 18 14:37:19 CEST 2000)
  • NAPRI s.r.o. (, as a first organisation, offers a commercial support for Medusa DS9 (installation, configuration, troubleshooting) in Slovakia.
  • NAPRI s.r.o. (, ako prva organizacia, poskytuje komercnu podporu pre Medusa DS9 (instalacia, konfiguracia, pomoc) vramci Slovenska.
  • Version 0.7.10 released (Fri Feb 25 12:06:51 CET 2000)
  • automake/autoconf support (thanks to Lubos Janica)
  • bugfix in constable - log_proc
  • added correct ptrace handling (and new event in constable: on ptrace)
  • many documentation fixes (thanks to Tony Kocurko)
  • improved i386 entry.S offset generator (the kernel should now compile properly regardless of /usr/include/(linux|asm) symlinks)
  • `constable.conf' is now named `default.medusa'
  • Version 0.7.9 released (Tue Feb 15 17:48:25 CET 2000)
  • many documentation fixes and updates
  • new sample config file
  • Version 0.7.8 released (Fri Feb 11 19:54:22 CET 2000)
  • bugfixes from 0.7.6-mp1
  • sample configuration and code-forcing files
  • symbol 'medusa_capable' is now correctly exported for modules
  • file hiding (requested)
  • changes in answer politics - read documentation first
  • Bugfix beta release 0.7.6-mp1 (Fri Jan 14 22:58:51 CET 2000)
  • This one fixes all bugs, reported in previous releases. Also adds "on init" - mostly wanted event. However, this package contains only patch for 2.2.14, is not signed with GPG and may contain new bugs. Full release will come soon, after first reports from users.
  • GPG keys created (Thu Nov 25 15:23:11 CET 1999)
  • All releases of Medusa DS9 are signed with GPG now. You can download the public key here.
  • Mailing list was created (Thu Nov 25 13:26:29 CET 1999)
  • You can join our new mailing list by sending an e-mail with "subscribe medusa" in the body of message to
  • The archive of this mailing list resides here.
  • Version 0.7.1 released (Wed Nov 24 00:46:42 CET 1999)
  • Minor updates
  • Version 0.7.0 released (Tue Nov 9 19:52:28 CET 1999)
  • Some documentation fixes and Makefiles updates
  • Added Init wrapper utility
  • Added mlibc (Medusa (or mini) C library to make force code programming easier by linking them with it)
  • Exported symbols bug fixed
  • Some updates to Constable configuration language
  • Version 0.6.3 released (Thu Oct 28 17:36:31 CEST 1999)
  • Some kernel patch compilation cleanups.
  • Fixed stupid bug in System V IPC checking.
  • Added communication protocol version checking.
  • Major part of documentation written.
  • Added dynamic loading of ELF objects for code forcing to Constable.
  • Added some extra parameters for Constable.
  • Added several useful constants to the configuration language.
  • Version 0.5.8 released (Thu Fri Sep 24 18:47:10 CEST 1999)
  • New feature: Quiet mode. Disables all messages from kernel.
  • Added some documentation.
  • Version 0.5.7 released (Thu Sep 23 18:04:44 CEST 1999)
  • Communication bug under GLIBC2 fixed.
  • Project status (Wed Sep 22 14:50:01 CEST 1999)
  • First beta version has been released.
  • Fixed many nasty bugs. Added IPC checking.
  • Package format now seems to be more standard.
  • This one (0.5.6) seems to be stable. Tested on for a long time.
  • Internal release 0.3.8 (Mon Jul 12 13:10:05 CEST 1999)
  • Changed signal delivering code.
  • Added some 'force' routines to the constable.
  • Minor code cleanups.
  • Back to current messages...

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